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‘This will make our town uninhabitable’: The long-awaited Delta tunnel strikes fear in locals

News Feed
Thursday, March 13, 2025

In summary The governor’s planned $20 billion tunnel to divert more water south and bypass the Delta would bring years of construction noise, pollution and traffic. Residents worry their rural farm towns will never be the same. Change tends to come at a creeping pace, if at all, in the Sacramento River community of Hood. Families that settled in this Delta outpost generations ago remain today, and pear orchards planted decades ago are still the region’s signature crop. Now Hood, population 271, is facing a formidable transformation that residents fear will shatter their sleepy agricultural community. One of the smallest towns in the region, Hood lies at ground zero of the main construction site for the Newsom administration’s proposed Delta water tunnel project.  “This will make our town uninhabitable,” said longtime resident Dan Whaley, who helps manage his family’s business, the Willow Ballroom, a community landmark across the main street from Hood’s post office. “There will be so much heavy equipment and traffic and people going through town that the locals will be driven out.” The $20 billion water conveyance project will feature a 45-mile, 36-foot-wide tunnel beneath the West Coast’s largest estuary. Its two intake facilities — which will draw river water into the system — will be situated just a river bend north and south of Hood.  Dan Whaley, owner of the Willow Ballroom in Hood, says tunnel construction noise and traffic will ruin his town. Photo by Fred Greaves for CalMatters Various versions of the tunnel concept have been discussed for decades. The goal is to upgrade the massive project that sends water to 27 million people, mostly in Southern California, and vast sprawls of farmland. By diverting river water miles upstream, the tunnel would bypass the ecologically sensitive Delta, where regulations restrict pumping, and allow more water to be sent south. The tunnel project still needs several state and federal permits, and faces multiple legal challenges from environmental and community groups, including the Delta Legacy Communities, a nonprofit representing Hood and other small towns along the lower Sacramento River. In spite of these obstacles, state officials anticipate starting construction as soon as 2029.  Standing north of town beside Highway 160, Mario Moreno pointed upstream, across an old Bosc pear orchard inside of a levee. The entire property, he said, could eventually become a complex of cement and steel, with a holding basin and a chasm that draws water into the tunnel system.  Turning south, he gestured past Hood, toward the downstream intake site. “And my little town is right there,” said Moreno, who grew up in Hood and now lives in nearby Elk Grove but remains chairman of the Hood Community Council.   Mario Moreno describes the potential impacts of the Delta tunnel project in Hood. Photo by Fred Greaves for CalMatters The planned intakes will be massive industrial complexes, lining thousands of feet of riverbank and covering hundreds of acres of farmland with fuel stations, septic systems, sludge-drying fields, access roads, parking and grout-mixing stations. Construction will mean years of noise, air pollution, dust and traffic. Once operational, the intakes will be capable of diverting 6,000 cubic feet per second of water — a fraction of the Sacramento’s flood-stage flows but more than its volume in dry periods.   The water will flow by gravity through protective fish screens, under the highway and into sedimentation basins. As the water clarifies, it will move toward the intake shafts and drop into the tunnel system, which will lead to Bethany Reservoir, near Tracy. Eventually, the water will enter the California Aqueduct, the main artery that transports water south. Major water agencies that could receive its water endorse the Delta Conveyance Project, as it’s officially called.   But opposition runs statewide, with many environmentalists saying the project is a water grab that will destroy what’s left of the Central Valley’s fish populations. Anti-tunnel sentiment is especially fierce in the Delta, where many fear the project will leave them with the dregs of the river.  Carrie Buckman, the tunnel project’s environmental program manager with the California Department of Water Resources, said pumping limits will protect the river, and existing rules that safeguard downstream water quality will remain in place.  But Delta farmer Harvey Correia, who grows chestnuts and figs 25 miles downstream of Hood, said saltwater intrusion from San Francisco Bay is already a recurring problem for him, and he believes the tunnel will make it worse.  “The farther upstream they divert the water, the lower our water quality will be,” Correia said. Dirk Heuvel, of McManis Family Vineyards, said half of the 400-acre vineyard he leases will be lost to the southern intake. The facility will also cut off his access to clean river water, forcing him to draw from nearby Snodgrass Slough. Fed by irrigation runoff, the slough’s water quality is poor, which Heuvel said will reduce the quality of grapes and wine and harm his brand.  “If you asked me today if I wanted to lease that property, I’d walk away,” Heuvel said.  Modernizing the Delta water system In an early iteration in 1965, the Delta tunnel was to be an aqueduct. Billed “the peripheral canal,” it was killed by voters in 1982. It reemerged in the 2000s as a pair of tunnels. In 2019, Gov. Gavin Newsom downsized the plan to a single tunnel and has promoted it since. California’s Natural Resources Secretary Wade Crowfoot said the “whiplash between very dry conditions and very wet conditions” gives the project great urgency. In December, Newsom called the tunnel “the most important climate adaptation project in the United States of America.”  According to state officials, the tunnel will increase annual Delta exports of water by half a million acre-feet, enough to serve almost 5 million people. Buckman said this will offset expected water losses this century due to climate change.  Jay Lund, a UC Davis professor emeritus of civil and environmental engineering and geography, said the upstream tunnel intakes will be much less vulnerable to saltwater intrusion from San Francisco Bay, adding a layer of protection to the state’s water supply. He said the tunnel will provide cleaner water than the supply pumped from the southern Delta, which must undergo costly treatment. The tunnel’s upstream diversion point will avoid the earthquake risk of the levees rupturing and allowing seawater to flood water pumps and other facilities, according to state officials, though they acknowledge this danger is small.   An aerial view of Threemile Slough in the Sacramento-San Joaquin River Delta near Rio Vista on May 19, 2024. The Delta is formed by the confluence of the Sacramento and San Joaquin rivers before their waters flow into San Francisco Bay. Photo by Loren Elliott for CalMatters State officials routinely remind the public of potential water supply benefits of the tunnel with a “what if” recap of recent rainstorms.  “If we had had Delta conveyance in place this year … by the time we got to that big three-day storm in February, we would already have filled San Luis Reservoir,” said Department of Water Resources Director Karla Nemeth during a March 4 presentation, referring to a large storage facility near Interstate 5 in Merced County.  Chasms, cranes and boring machines Such arguments about bolstering California’s water supply do little to gain the support of Hood, Courtland, Locke and other Delta communities south of Sacramento, where the construction will bring traffic, dust, and other daily disturbances. Building the project will be a gargantuan undertaking lasting an estimated 13 years, and the intakes in Hood are just the beginning. Every few miles along the tunnel path, crews will dig vertical access shafts, some more than 100 feet wide. These will serve as entry, exit and servicing sites for tunnel-boring machines.  The excavation will produce 14 million cubic yards of earth. This sludge will be tested for hazardous contaminants and, when necessary, disposed of offsite. Much of the rest will be spread across fields and, to suppress dust emissions, planted with cover crop seeds.  To address the plethora of expected impacts on Delta residents, state officials have proposed a suite of “community benefits.” Outlined in the project’s Final Environmental Impact Report, these benefits include new recreation areas, swimming lessons for all Delta residents, support of local agriculture and various economic development programs.  Gia Moreno, Mario Moreno’s niece and a teacher in Clarksburg, thinks the offerings will be too little, too late.  “We won’t even be here to benefit from any of the things they’re offering,” she said. While the proposed benefits include “marketing of the region for tourism,” restaurant owner Michelle Mota expects through-town traffic will decline. Mota, who runs the Hood Supply Co Bar and Grill with her husband, fears the project will displace residents, deter visitors and make her restaurant unprofitable.  “It’s our only means of livelihood right now,” Mota said. “We’re really unsure about the future.”  Rep. Josh Harder, a Stockton Democrat, described the benefits as “a bribe program to placate outraged communities.” First: A view of the Sacramento River as it passes by the town of Hood. Last: Residents in Hood posted a “No Tunnel” sign. Photos by Fred Greaves for CalMatters Michael Brodsky, an attorney for the town’s community council, believes Hood has been selected as the tunnel intake site not for any technical reason but because the town is small and lacks political power.  “Hood doesn’t have any high-value land uses,” Brodsky said. He believes the state chose to place the intakes away from more prosperous (and much larger) communities, such as southern Sacramento, to “not bother people who can fight back and cause a problem.” But Graham Bradner, executive director of the Delta Conveyance Design and Construction Authority — an assemblage of water districts supplied by the State Water Project — said river flow patterns, adjacent levee integrity and considerations of existing land use make the chosen sites optimal.  Bradner helped oversee a series of 19 stakeholder engagement meetings held between 2019 and 2022. The meetings, including a team of appointed community representatives, aimed to address Delta residents’ concerns about the tunnel project. But they left some participants frustrated. Several residents told CalMatters that moderators tightly restricted discussions and directed conversation away from topics including relocating the intakes farther from Hood.  Osha Meserve, an attorney representing Delta community members in legal challenges against the tunnel, attended the meetings and said discussing project alternatives “wasn’t on the table.” “The reality is this will be a mega-project constructed in a pretty rural area. It’s in everyone’s interest to ensure…that it moves forward in a way that respects the Delta and its uniqueness.”Graham Bradner, Delta Conveyance Design and Construction Authority Doug Hemly, a retired fifth-generation pear farmer who lives just south of Hood, has long challenged the idea of tunneling water from the northern Delta. Like many other locals, he thinks state officials have not given due consideration of alternative routes and different designs — or even a no-project alternative — that would have less impact on the region.  “There were a lot of approaches that were dismissed by (state officials) for reasons that never made a lot of sense other than that’s not what they wanted,” said Hemly, whose house would be just a few rows of pear trees south of the southern intake. For instance, fortifying levees protecting the Delta pumps from saltwater intrusion would be much cheaper, said Emily Pappalardo, a Delta levee engineer.  Retired pear farmer Doug Hemly in front of his home in Hood that has been in his family for 150 years . Photo by Fred Greaves for CalMatters Bradner, representing water districts, said project leaders have altered the plans in a variety of ways to ease environmental and community impacts, but he also recognized that the tunnel could significantly change the Delta.  “The reality is this will be a mega-project constructed in a pretty rural area,” he said. “It’s in everyone’s interest to ensure, if this project moves forward, that it moves forward in a way that respects the Delta and its uniqueness.” ‘Negative outcomes for Bay-Delta fish’ Tunnel opponents also fear for the Delta’s fish, birds and other wildlife. Already strained by the state and federal pumps that can reverse river flows and derail fish migrations, the estuary has collapsed from a once-thriving ecosystem into an aquatic ICU of endangered species and harmful algal blooms.   Officials say the tunnel will help because of the upstream position of the intakes. By skimming off river flows many miles from the heart of the estuary, the tunnel, state officials say, will produce more water for people with fewer environmental impacts.  But Jon Rosenfield, science director at San Francisco Baykeeper, said the environmental analyses “of every iteration” of the tunnel “that’s been proposed since 2008 have pointed to negative outcomes for Bay-Delta fish, wildlife, and water quality.” The project’s final environmental report predicts, among many other impacts, lower survival of young salmon. Rosenfield said chronically depleted river flow is the key driver of Bay-Delta fish declines. While the tunnel’s operating rules aim to keep flows downstream of the intakes at no less than 10,000 cubic feet per second, Rosenfield said this is a feeble protection. He cited 2023 research showing that juvenile Chinook salmon mortality rises rapidly once Delta river flows drop below 35,000 cubic feet per second.   Tunnel opponent State Sen. Jerry McNerney, a Democrat from Stockton, said diversion limits ostensibly safeguarding the estuary would become unreliable if the tunnel is built. He predicts that the cost will be at least twice the estimated $20 billion, and water agencies covering the bill, he said, will push for waivers on environmental rules protecting the Delta to maximize their return on investment.    “If they have a drought in Southern California, they’re just going to try and turn it on,” he said. “I have every reason to believe that if that tunnel gets built, it’s going to get used in a way that’s detrimental to the Delta and the state of California.” Anglers begin a morning of fishing on the Sacramento-San Joaquin Delta in Stockton. Photo by Loren Elliott for CalMatters Water agencies poised to benefit from the tunnel have publicly endorsed it. These include the State Water Contractors, the Santa Clara Valley Water District, the Kern County Water Agency, and the Metropolitan Water District of Southern California, which pledged in December to pay $142 million for the project’s environmental planning and pre-construction costs. But tapping deeper into the Delta is not a fair solution to perceived shortages in other regions, said Max Gomberg, a water equity and affordability consultant and a former staff member of the state water board. He said cutting farm deliveries to Kern County, which receives Delta diversions, would free up enough water to solve urban shortages.  “The core ethos of water since Europeans arrived is to take more, and it really hasn’t changed. The fundamental issue with the tunnel is it perpetuates that.”Max Gomberg, water equity expert and former water board member Agriculture consumes four times the water that California’s towns and cities do, and Gomberg thinks the state’s farm production has surpassed sustainability. “The core ethos of water since Europeans arrived is to take more, and it really hasn’t changed,” Gomberg said. “The fundamental issue with the tunnel is it perpetuates that.” The tunnel debate has many water supply experts touting alternative measures for reducing demand for Delta water. These include using less water, capturing urban stormwater, improved groundwater management and recycling more wastewater — all areas being pursued by water districts around Southern California. Per capita potable water use across Southern California has declined by almost 50% since 1990 in spite of a growing population. Bruze Reznik, executive director of Los Angeles Waterkeeper, said focusing on increased Delta imports will divert interest and money away from local initiatives to conserve and recycle water. “We’ll never wean ourselves 100% off imported water, but there’s a lot more we can do,” Reznik said. As planning proceedings go on, Hood, which is unincorporated, and surrounding communities can’t shake the feeling that they are being sacrificed.     “We’re small, we’re an easy target,” said Gia Moreno, who grew up in Hood and now lives in South Sacramento but routinely visits her hometown to see family. Like so many others in the region, she has grown cynical about the state’s treatment of the town that her ancestors helped settle. Over the years, she said she’s noticed several times a conspicuous omission on some project maps: the community of Hood.  To Moreno, it’s more than a mapping error, it’s a sign:   “They don’t intend for Hood to be here,” she said.  More about the delta ‘Dirty Delta’: California’s largest estuary is in crisis. Is the state discriminating against people who fish there? by Rachel Becker October 8, 2024October 9, 2024 $20 billion: The Delta tunnel’s new price tag by Rachel Becker May 16, 2024May 16, 2024

The governor’s planned $20 billion tunnel to divert more water south and bypass the Delta would bring years of construction noise, pollution and traffic. Residents worry their rural farm towns will never be the same.

An aerial view of a rural town situated along a winding river, with a mix of residential homes, mobile homes, and agricultural fields. A large industrial building with a curved roof is positioned near the riverbank, alongside a smaller, older structure. A two-lane road follows the river's edge, connecting the area to the surrounding farmland and distant horizon. The landscape features green fields, trees, and patches of bare land, with a clear blue sky above.

In summary

The governor’s planned $20 billion tunnel to divert more water south and bypass the Delta would bring years of construction noise, pollution and traffic. Residents worry their rural farm towns will never be the same.

Change tends to come at a creeping pace, if at all, in the Sacramento River community of Hood. Families that settled in this Delta outpost generations ago remain today, and pear orchards planted decades ago are still the region’s signature crop.

Now Hood, population 271, is facing a formidable transformation that residents fear will shatter their sleepy agricultural community. One of the smallest towns in the region, Hood lies at ground zero of the main construction site for the Newsom administration’s proposed Delta water tunnel project. 

“This will make our town uninhabitable,” said longtime resident Dan Whaley, who helps manage his family’s business, the Willow Ballroom, a community landmark across the main street from Hood’s post office. “There will be so much heavy equipment and traffic and people going through town that the locals will be driven out.”

The $20 billion water conveyance project will feature a 45-mile, 36-foot-wide tunnel beneath the West Coast’s largest estuary. Its two intake facilities — which will draw river water into the system — will be situated just a river bend north and south of Hood. 

A person wearing glasses, a light blue cap, and a plaid scarf sits at a desk in an office, engaged in conversation. They are gesturing with their hands while speaking. The desk is cluttered with papers, a cup, a keyboard, and a computer monitor. Behind them, wooden shelves hold books, decorative objects, and framed photographs. A black-and-white image of a dog on a beach leans against the wall, and a large mirror with a gold frame reflects part of the room.
Dan Whaley, owner of the Willow Ballroom in Hood, says tunnel construction noise and traffic will ruin his town. Photo by Fred Greaves for CalMatters

Various versions of the tunnel concept have been discussed for decades. The goal is to upgrade the massive project that sends water to 27 million people, mostly in Southern California, and vast sprawls of farmland. By diverting river water miles upstream, the tunnel would bypass the ecologically sensitive Delta, where regulations restrict pumping, and allow more water to be sent south.

The tunnel project still needs several state and federal permits, and faces multiple legal challenges from environmental and community groups, including the Delta Legacy Communities, a nonprofit representing Hood and other small towns along the lower Sacramento River. In spite of these obstacles, state officials anticipate starting construction as soon as 2029. 

Standing north of town beside Highway 160, Mario Moreno pointed upstream, across an old Bosc pear orchard inside of a levee. The entire property, he said, could eventually become a complex of cement and steel, with a holding basin and a chasm that draws water into the tunnel system. 

Turning south, he gestured past Hood, toward the downstream intake site. “And my little town is right there,” said Moreno, who grew up in Hood and now lives in nearby Elk Grove but remains chairman of the Hood Community Council.  

A person wearing a navy blue hoodie with "Cosumnes Oaks" written across the front and a black baseball cap stands beside a rural road, pointing into the distance. They appear to be speaking, with an engaged expression. The setting includes a river, trees, and a clear blue sky, with a guardrail running along the road's edge. Sunlight casts strong shadows on the gravel shoulder and surrounding landscape.
Mario Moreno describes the potential impacts of the Delta tunnel project in Hood. Photo by Fred Greaves for CalMatters

The planned intakes will be massive industrial complexes, lining thousands of feet of riverbank and covering hundreds of acres of farmland with fuel stations, septic systems, sludge-drying fields, access roads, parking and grout-mixing stations.

Construction will mean years of noise, air pollution, dust and traffic. Once operational, the intakes will be capable of diverting 6,000 cubic feet per second of water — a fraction of the Sacramento’s flood-stage flows but more than its volume in dry periods.  

The water will flow by gravity through protective fish screens, under the highway and into sedimentation basins. As the water clarifies, it will move toward the intake shafts and drop into the tunnel system, which will lead to Bethany Reservoir, near Tracy. Eventually, the water will enter the California Aqueduct, the main artery that transports water south.

Major water agencies that could receive its water endorse the Delta Conveyance Project, as it’s officially called.  

But opposition runs statewide, with many environmentalists saying the project is a water grab that will destroy what’s left of the Central Valley’s fish populations. Anti-tunnel sentiment is especially fierce in the Delta, where many fear the project will leave them with the dregs of the river. 

Carrie Buckman, the tunnel project’s environmental program manager with the California Department of Water Resources, said pumping limits will protect the river, and existing rules that safeguard downstream water quality will remain in place. 

But Delta farmer Harvey Correia, who grows chestnuts and figs 25 miles downstream of Hood, said saltwater intrusion from San Francisco Bay is already a recurring problem for him, and he believes the tunnel will make it worse. 

“The farther upstream they divert the water, the lower our water quality will be,” Correia said.

Dirk Heuvel, of McManis Family Vineyards, said half of the 400-acre vineyard he leases will be lost to the southern intake. The facility will also cut off his access to clean river water, forcing him to draw from nearby Snodgrass Slough. Fed by irrigation runoff, the slough’s water quality is poor, which Heuvel said will reduce the quality of grapes and wine and harm his brand. 

“If you asked me today if I wanted to lease that property, I’d walk away,” Heuvel said. 

Modernizing the Delta water system

In an early iteration in 1965, the Delta tunnel was to be an aqueduct. Billed “the peripheral canal,” it was killed by voters in 1982. It reemerged in the 2000s as a pair of tunnels. In 2019, Gov. Gavin Newsom downsized the plan to a single tunnel and has promoted it since.

California’s Natural Resources Secretary Wade Crowfoot said the “whiplash between very dry conditions and very wet conditions” gives the project great urgency. In December, Newsom called the tunnel “the most important climate adaptation project in the United States of America.” 

According to state officials, the tunnel will increase annual Delta exports of water by half a million acre-feet, enough to serve almost 5 million people. Buckman said this will offset expected water losses this century due to climate change. 

Jay Lund, a UC Davis professor emeritus of civil and environmental engineering and geography, said the upstream tunnel intakes will be much less vulnerable to saltwater intrusion from San Francisco Bay, adding a layer of protection to the state’s water supply. He said the tunnel will provide cleaner water than the supply pumped from the southern Delta, which must undergo costly treatment.

The tunnel’s upstream diversion point will avoid the earthquake risk of the levees rupturing and allowing seawater to flood water pumps and other facilities, according to state officials, though they acknowledge this danger is small.  

An aerial view of a wetland landscape features winding waterways, marshy islands, and patches of green vegetation floating on the water's surface. Dirt pathways and levees divide the water, creating geometric patterns. In the distance, a bridge spans a wide river, with industrial structures and wind turbines visible along the horizon. The scene showcases a mix of natural and human-altered environments under a clear sky.
An aerial view of Threemile Slough in the Sacramento-San Joaquin River Delta near Rio Vista on May 19, 2024. The Delta is formed by the confluence of the Sacramento and San Joaquin rivers before their waters flow into San Francisco Bay. Photo by Loren Elliott for CalMatters

State officials routinely remind the public of potential water supply benefits of the tunnel with a “what if” recap of recent rainstorms. 

“If we had had Delta conveyance in place this year … by the time we got to that big three-day storm in February, we would already have filled San Luis Reservoir,” said Department of Water Resources Director Karla Nemeth during a March 4 presentation, referring to a large storage facility near Interstate 5 in Merced County. 

Chasms, cranes and boring machines

Such arguments about bolstering California’s water supply do little to gain the support of Hood, Courtland, Locke and other Delta communities south of Sacramento, where the construction will bring traffic, dust, and other daily disturbances.

Building the project will be a gargantuan undertaking lasting an estimated 13 years, and the intakes in Hood are just the beginning. Every few miles along the tunnel path, crews will dig vertical access shafts, some more than 100 feet wide. These will serve as entry, exit and servicing sites for tunnel-boring machines. 

The excavation will produce 14 million cubic yards of earth. This sludge will be tested for hazardous contaminants and, when necessary, disposed of offsite. Much of the rest will be spread across fields and, to suppress dust emissions, planted with cover crop seeds. 

To address the plethora of expected impacts on Delta residents, state officials have proposed a suite of “community benefits.” Outlined in the project’s Final Environmental Impact Report, these benefits include new recreation areas, swimming lessons for all Delta residents, support of local agriculture and various economic development programs. 

Gia Moreno, Mario Moreno’s niece and a teacher in Clarksburg, thinks the offerings will be too little, too late. 

“We won’t even be here to benefit from any of the things they’re offering,” she said.

While the proposed benefits include “marketing of the region for tourism,” restaurant owner Michelle Mota expects through-town traffic will decline. Mota, who runs the Hood Supply Co Bar and Grill with her husband, fears the project will displace residents, deter visitors and make her restaurant unprofitable. 

“It’s our only means of livelihood right now,” Mota said. “We’re really unsure about the future.” 

Rep. Josh Harder, a Stockton Democrat, described the benefits as “a bribe program to placate outraged communities.”

Michael Brodsky, an attorney for the town’s community council, believes Hood has been selected as the tunnel intake site not for any technical reason but because the town is small and lacks political power. 

“Hood doesn’t have any high-value land uses,” Brodsky said. He believes the state chose to place the intakes away from more prosperous (and much larger) communities, such as southern Sacramento, to “not bother people who can fight back and cause a problem.”

But Graham Bradner, executive director of the Delta Conveyance Design and Construction Authority — an assemblage of water districts supplied by the State Water Project — said river flow patterns, adjacent levee integrity and considerations of existing land use make the chosen sites optimal. 

Bradner helped oversee a series of 19 stakeholder engagement meetings held between 2019 and 2022. The meetings, including a team of appointed community representatives, aimed to address Delta residents’ concerns about the tunnel project. But they left some participants frustrated.

Several residents told CalMatters that moderators tightly restricted discussions and directed conversation away from topics including relocating the intakes farther from Hood. 

Osha Meserve, an attorney representing Delta community members in legal challenges against the tunnel, attended the meetings and said discussing project alternatives “wasn’t on the table.”

“The reality is this will be a mega-project constructed in a pretty rural area. It’s in everyone’s interest to ensure…that it moves forward in a way that respects the Delta and its uniqueness.”

Graham Bradner, Delta Conveyance Design and Construction Authority

Doug Hemly, a retired fifth-generation pear farmer who lives just south of Hood, has long challenged the idea of tunneling water from the northern Delta. Like many other locals, he thinks state officials have not given due consideration of alternative routes and different designs — or even a no-project alternative — that would have less impact on the region. 

“There were a lot of approaches that were dismissed by (state officials) for reasons that never made a lot of sense other than that’s not what they wanted,” said Hemly, whose house would be just a few rows of pear trees south of the southern intake.

For instance, fortifying levees protecting the Delta pumps from saltwater intrusion would be much cheaper, said Emily Pappalardo, a Delta levee engineer. 

A person with a white beard and glasses stands in front of a white, historic-style house with decorative railings and columns. They wear a light gray hoodie and have a thoughtful expression while gazing into the distance. The background features an open doorway, windows reflecting the surroundings, and a bright blue sky. Sunlight casts a glow on their face, highlighting the texture of their beard and the details of the house’s architecture.
Retired pear farmer Doug Hemly in front of his home in Hood that has been in his family for 150 years . Photo by Fred Greaves for CalMatters

Bradner, representing water districts, said project leaders have altered the plans in a variety of ways to ease environmental and community impacts, but he also recognized that the tunnel could significantly change the Delta. 

“The reality is this will be a mega-project constructed in a pretty rural area,” he said. “It’s in everyone’s interest to ensure, if this project moves forward, that it moves forward in a way that respects the Delta and its uniqueness.”

‘Negative outcomes for Bay-Delta fish’

Tunnel opponents also fear for the Delta’s fish, birds and other wildlife. Already strained by the state and federal pumps that can reverse river flows and derail fish migrations, the estuary has collapsed from a once-thriving ecosystem into an aquatic ICU of endangered species and harmful algal blooms.  

Officials say the tunnel will help because of the upstream position of the intakes. By skimming off river flows many miles from the heart of the estuary, the tunnel, state officials say, will produce more water for people with fewer environmental impacts. 

But Jon Rosenfield, science director at San Francisco Baykeeper, said the environmental analyses “of every iteration” of the tunnel “that’s been proposed since 2008 have pointed to negative outcomes for Bay-Delta fish, wildlife, and water quality.” The project’s final environmental report predicts, among many other impacts, lower survival of young salmon.

Rosenfield said chronically depleted river flow is the key driver of Bay-Delta fish declines. While the tunnel’s operating rules aim to keep flows downstream of the intakes at no less than 10,000 cubic feet per second, Rosenfield said this is a feeble protection. He cited 2023 research showing that juvenile Chinook salmon mortality rises rapidly once Delta river flows drop below 35,000 cubic feet per second.  

Tunnel opponent State Sen. Jerry McNerney, a Democrat from Stockton, said diversion limits ostensibly safeguarding the estuary would become unreliable if the tunnel is built.

He predicts that the cost will be at least twice the estimated $20 billion, and water agencies covering the bill, he said, will push for waivers on environmental rules protecting the Delta to maximize their return on investment.   

“If they have a drought in Southern California, they’re just going to try and turn it on,” he said. “I have every reason to believe that if that tunnel gets built, it’s going to get used in a way that’s detrimental to the Delta and the state of California.”

Three people sit in a fishing boat while in the Sacramento-San Joaquin Delta. The rivers' bank is visible on the edge of the photo. The light is soft, evoking dawn or sunset.
Anglers begin a morning of fishing on the Sacramento-San Joaquin Delta in Stockton. Photo by Loren Elliott for CalMatters

Water agencies poised to benefit from the tunnel have publicly endorsed it. These include the State Water Contractors, the Santa Clara Valley Water District, the Kern County Water Agency, and the Metropolitan Water District of Southern California, which pledged in December to pay $142 million for the project’s environmental planning and pre-construction costs.

But tapping deeper into the Delta is not a fair solution to perceived shortages in other regions, said Max Gomberg, a water equity and affordability consultant and a former staff member of the state water board. He said cutting farm deliveries to Kern County, which receives Delta diversions, would free up enough water to solve urban shortages. 

“The core ethos of water since Europeans arrived is to take more, and it really hasn’t changed. The fundamental issue with the tunnel is it perpetuates that.”

Max Gomberg, water equity expert and former water board member

Agriculture consumes four times the water that California’s towns and cities do, and Gomberg thinks the state’s farm production has surpassed sustainability.

“The core ethos of water since Europeans arrived is to take more, and it really hasn’t changed,” Gomberg said. “The fundamental issue with the tunnel is it perpetuates that.”

The tunnel debate has many water supply experts touting alternative measures for reducing demand for Delta water. These include using less water, capturing urban stormwater, improved groundwater management and recycling more wastewater — all areas being pursued by water districts around Southern California. Per capita potable water use across Southern California has declined by almost 50% since 1990 in spite of a growing population.

Bruze Reznik, executive director of Los Angeles Waterkeeper, said focusing on increased Delta imports will divert interest and money away from local initiatives to conserve and recycle water.

“We’ll never wean ourselves 100% off imported water, but there’s a lot more we can do,” Reznik said.

As planning proceedings go on, Hood, which is unincorporated, and surrounding communities can’t shake the feeling that they are being sacrificed.    

“We’re small, we’re an easy target,” said Gia Moreno, who grew up in Hood and now lives in South Sacramento but routinely visits her hometown to see family.

Like so many others in the region, she has grown cynical about the state’s treatment of the town that her ancestors helped settle. Over the years, she said she’s noticed several times a conspicuous omission on some project maps: the community of Hood. 

To Moreno, it’s more than a mapping error, it’s a sign:  

“They don’t intend for Hood to be here,” she said. 

Read the full story here.
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A Michigan town hopes to stop a data center with a 2026 ballot initiative

Local officials see millions of dollars in tax revenue, but more than 950 residents who signed ballot petitions fear endless noise, pollution and higher electric rates.

Early this year, Augusta Charter Township resident Travis Matts had seen a few headlines about the problems data centers caused in towns across the country. He thought the impacts on water, air and utility bills sounded awful, but it also seemed like a far-away issue. Until it suddenly hit home in May.  That is when Matts learned, through his group of volunteers that cleans up area litter, that a data center was proposed for an 822-acre property largely in Augusta Township, a small farming community southeast of Ann Arbor. Township leadership fully supported it.  Matts and others responded by quickly forming a new residents group in opposition, and began collecting ballot initiative signatures to put a rezoning for the data center in front of voters. The debate consumed local politics and bitterly divided some residents in this town of about 8,000 people, leading to accusations of harassment and threats.  “It’s sad that we residents have to fight as hard as we do to keep these facilities out of our backyards, but if we don’t then who will?” he asked. “We’re taking it into our own hands.”  By August, the group, Protect Augusta Charter Township (PACT), had collected enough signatures for a referendum, and PACT is confident residents will vote the project down, Matts added. An aerial view of Google’s New Albany data center campus in Central Ohio. Courtesy of Google The grassroots effort is part of a growing number of municipal fights that are playing out in towns throughout Michigan—and across the U.S.—that could derail data center plans. The centers are opposed by people from across the political spectrum, and the controversy here is unfolding as neighboring Saline Township rejected a similar data center plan in September.  In Augusta Township, the proposal has pitted nearly 1,000 residents who signed the ballot initiative against the township Board of Trustees, which in July unanimously approved the rezoning, and the developer behind the proposal, New York City-based real estate firm Thor Equities. Thor builds data centers but has not announced a client, though a planning report noted tech companies like Google and Microsoft use the type of facility that is proposed here. The centers typically house infrastructure for artificial intelligence and other computing uses.  Few details on how the center would look are yet available, but it would include at least five large buildings on what is currently farmland and wetlands, according to plans. The center may consume 1 million gallons of water daily, local news outlet MLive reported, and would include large generators. The Board of Trustees and supporters point to potential benefits, including increased tax revenue for the financially struggling township, and water and sewer infrastructure improvements.  “It would just be so huge for us,” said Augusta Township Clerk Kim Gonczy. The level of tax revenue is still unclear, she said, but added it is likely “millions of dollars.”  “It could make such a big difference for the township,” she added. The project’s opponents questioned the economic impact. They fear an increase in noise and light pollution, and that the massive facility would destroy Augusta’s rural character while pushing up utility bills and causing brownouts. PACT’s effort is about preserving the “sense of place,” said Matts, whose family has lived in Augusta for 100 years.  “With this data center plan they’re basically saying, ‘We know that, but business is more important,’” Matts said. “Landscape and preserving the identity of a place does not register on their needs list.” Residents needed to collect 561 signatures to get the issue on the ballot, and they turned in 957 gathered during an approximately two-week period in August. Township officials must certify the signatures, then develop language for the ballot that will be voted on during a special election in May 2026 at the earliest. Matts estimated PACT spoke with 1,200 to 1,400 residents, and a strong majority signed the petition. As data centers’ financial and environmental tolls have become clearer, the public is broadly growing more concerned. In many communities, their massive electricity and water consumption has increased residential utility bills. In Michigan and elsewhere, they have already required more fossil fuel plants to be built or stay open, and threaten to derail the transition to clean energy. Meanwhile, they can be a source of light, noise, water and air pollution.  The local battles playing out across the state are residents’ best line of defense, said Tim Minotas, legislative coordinator for the Sierra Club of Michigan. “This is where people live and raise their family so in the absence of state or federal protections, it’s really the responsibility of our local communities to take a stand to protect themselves,” Minotas said.  “That’s harassment” An incident detailed in a previous news report and confirmed by four residents to Inside Climate News described how a township official in August allegedly called police on PACT members. PACT had set up a canopy and table on the side of the road to collect signatures for the ballot initiative near the township hall. The responding officer allegedly found the campaigners had done nothing wrong, but asked them to move the table back from the road. PACT questioned the township’s intent.  “Calling the cops, that’s harassment,” resident Deborah Fuqua-Frey, who is opposed to the project, said during a public comment session after the incident.  Gonczy did not respond to Inside Climate News questions about the incident. In a late-August statement to the news outlet Planet Detroit, Gonczy said the campaigners were set up too close to a dangerous intersection.  Read Next Data centers gobble Earth’s resources. What if we took them to space instead? Sophie Hurwitz Meanwhile, residents said they have received anonymous handwritten notes in their mailboxes that they perceived as threats. Video shows the township supervisor, Todd Waller, would not allow residents to talk about the data center during public comment at board meetings. Some residents questioned the ethics of Waller’s rule, and said it was part of a larger pattern of officials trying to silence the project’s critics. Waller did not respond to requests for comment.  The local issues came after a battle in the state legislature in which progressive legislators sought to add consumer and environmental protections to incentives for data centers. Those were not included in the bills that passed, and may have helped alleviate some of the problems now being dealt with at the local level, said Denise Keele, director of the nonprofit Michigan Climate Action Network.  “It’s one thing if there is NIMBY-ism, and people saying ‘I don’t want this in my community,’ but with data centers the fears are real,” Keele said. “The centers suck up energy and more importantly they will raise our energy rates.”  Merits and drawbacks Township officials have downplayed PACT’s litany of issues with the project. Responding to concerns about light pollution, Gonczy said the property’s lights will be pointed toward the ground, so they won’t flood the surrounding region. She also told Inside Climate News that officials traveled to Toledo to visit a data center, used a noise meter to measure the decibels, and found the level would not violate Augusta Township ordinances.  Moreover, the project would be built in the township’s southwest corner, far away from most residents, Gonczy said. She added that she has not seen any evidence that it would decrease grid reliability or increase bills.  “I don’t understand all of that, and I don’t know where it’s coming from,” Gonczy told Inside Climate News.  The project’s opponents see it differently. They argue that the financial benefit is not worth the cost, and still suspect the lights will be a problem.  Read Next A coal-fired plant in Michigan was supposed to close. But Trump forced it to keep running at $1M a day. Oliver Milman, The Guardian “It won’t be dark at night because there are going to be acres and acres of lights,” said one township resident who declined to use her name for fear of retribution. “It’s no longer your dark cornfield because there’s a glow that never goes away.” The project’s opponents also questioned the accuracy of the sound meter readings, and said those do not take into account the effects of a steady din. Data centers include generators that frequently run on diesel fuel, and those are used monthly as routine maintenance to ensure they work, which could contribute to air and noise pollution.  More important, Matts said, is the loss of the rural character. State leaders didn’t consider these issues, nor has Augusta Township’s Board of Trustees, Matts said, which he called “frustrating.”  “People have lived here for a long time and we understand that things come and go and there’s change and development, but something of this scale and magnitude—1,000 industrial acres—is asinine in a community like this,” Matts said. This story was originally published by Grist with the headline A Michigan town hopes to stop a data center with a 2026 ballot initiative on Oct 14, 2025.

Thousands join biggest-ever UK environmental lawsuit over river pollution

Livestock and water companies are accused of “extensive” pollution in the Wye, Lugg and Usk rivers.

Thousands join biggest-ever UK environmental lawsuit over river pollutionSteffan MessengerEnvironment correspondent, BBC WalesBBCThe Wye Valley is a designated Area of Outstanding Natural BeautyThe biggest legal claim ever brought in the UK over environmental pollution in the country has been filed at the High Court.Almost 4,000 people have signed up to the lawsuit against major poultry producers and a water company over allegations of "extensive and widespread pollution" in three rivers - the Wye, Lugg and Usk.They argue the state of the rivers in recent years has severely affected local businesses, property values and people's enjoyment of the area, and are seeking "substantial damages".The firms being sued - Avara Foods Limited, Freemans of Newent Limited and Welsh Water - all deny the claims.Celine O'Donovan, from the law firm Leigh Day, said the case was the largest brought in the UK over environmental pollution in the country on three counts – the number of claimants, the geographical scale of the damage and the total damages claimed.Those who have joined the group legal claim all either live or work alongside the rivers or use them regularly for leisure activities like swimming and canoeing.They want the court to order a clean-up of the rivers as well as compensation.A combination of chicken manure and sewage spills are blamed for harming water quality and suffocating fish and other wildlife.The Wye in particular has become symbolic of widespread concerns over the worsening state of the UK's waterways in recent years.As many as 23 million chickens, a quarter of the UK's poultry production, are raised in the river's catchment area.Justine EvansJustine Evans used to love swimming and canoeing on the River Wye but is now worried polluted water might make her illIt flows for 155 miles from its source in the Cambrian Mountains of mid Wales along the border with England to the Severn Estuary.The River Lugg is a major tributary of the Wye, flowing predominately through Herefordshire.The River Usk runs through the Bannau Brycheiniog National Park, also known as the Brecon Beacons, as well as the Blaenavon Industrial Landscape World Heritage Site before reaching the Bristol Channel at Newport.All three rivers are protected for their importance to rare wildlife, including otters, freshwater pearl mussels and the Atlantic salmon.Wildlife filmmaker Justine Evans is acting as the lead claimant and said she had noticed a "stark decline" in the Wye's condition in recent years.The once clear river had turned murky and slimy, completely changing how she felt about living alongside it, she said."It's horrible to think what has happened to the wildlife it is home to," she added.Friends of the lower WyeCampaigners have been raising concerns over the state of the river Wye for several yearsFormer Olympic swimmer Roland Lee moved to live near the Wye in order to have access to open water for swimming."But now I'd actually go as far as to warn people against going in," he said.Another claimant, Gino Parisi from Raglan, Monmouthshire, was worried about the state of the River Usk."Having grown up around the River Usk in the 1980s, I know just how beautiful the river and surrounding area can be," he said.Now the water had become "mucky and cloudy" and "you can see build-ups of foam in a number of spots"."Not only would I feel uncomfortable going in, but I'd also have concerns for my health."Why is the River Wye polluted?The claimants allege pollution has been caused by run-off from farmland containing high concentrations of phosphorus, nitrogen and bacteria from the spreading of poultry manure and sewage bio solids used as fertiliser.They also blame discharge of sewage directly into rivers.The companies being sued are accused of negligence, causing private and public nuisance and even trespass where the riverbed has been affected on a claimant's property.One part of the claim is brought on behalf of people affected by what is known as the Lugg Moratorium - restrictions on building brought in by Herefordshire County Council to protect the River Lugg from further pollution.Oliver Holland from Leigh Day said the claim was "the culmination of an extraordinary effort by local community members and campaign groups to research, monitor and advocate for their rivers"."This is the largest legal action concerning environmental pollution ever brought in the UK. In a context where government and regulators have failed to prevent the degradation of our rivers the court has become the last avenue for justice," he added.Gino ParisiGino Parisi has "many happy memories" of swimming and paddling in the River UskAvara Foods Limited is one of the largest poultry processors in the UK. Its subsidiary, Freemans of Newent, based in Hereford is also named as a defendant in the case. A spokesperson for Avara Foods told the BBC it shared concerns over the condition of the River Wye."But we believe that this legal claim is based on a misunderstanding, as no manure is stored or spread on poultry-only farms that supply Avara Foods."Where poultry manure is used as fertiliser, it is for other produce in other agricultural sectors," the company said, adding individual farmers were responsible for how nutrients were used in their arable operations. The company said it employed about 1,500 people in the Wye catchment area and all its poultry was produced "to standards that are amongst the highest in the world"."The focus instead needs to be on solutions that will improve the health of the river, addressing all forms of pollution and the effects of climate change, and for action to be taken accordingly," it said.Welsh Water said the company had made "significant investments over recent years", achieving "real improvements in water quality".These included spending £70m over the last five years to improve sites along the River Wye, work that was delivered "ahead of the target set by our regulators", and £33m for the River Usk."Unfortunately, the water pollution caused by other sectors during this period has increased significantly, reducing the overall impact of the water quality improvements we have achieved," a spokesperson said.The company intended to "defend this case robustly", they added."The fact that we are a not-for-profit company means that any payments to these claimants would necessarily reduce the amount that we can re-invest in delivering further improvements for the benefit of all of our customers and the environment."Environmental campaigners lost a high-profile legal challenge against the UK government over pollution in the river Wye in 2024.Ministers in Westminster and Cardiff Bay have since set up a joint £1m fund to investigate the sources of pollution in the river.

Air Pollution Particles Hitch A Ride On Red Blood Cells, Into Major Organs, Study Says

By Dennis Thompson HealthDay ReporterMONDAY, Oct. 6, 2025 (HealthDay News) — The tiny particles inhaled from air pollution stick to our red blood...

By Dennis Thompson HealthDay ReporterMONDAY, Oct. 6, 2025 (HealthDay News) — The tiny particles inhaled from air pollution stick to our red blood cells, hitching a ride to do damage throughout our bodies, a new small-scale study says.These particles — produced by motor vehicles and industrial emissions — recently have been found in the brain and the heart, where they are linked to increased risk of disease, researchers said.The new study provides the first glimpse into how those particles work their way into people’s major organs, according to findings published recently in the journal ERJ Open Research.“In our bodies, red blood cells work by collecting oxygen from our lungs and delivering it throughout the body,” said lead researcher Dr. Jonathan Grigg,  a professor of pediatric respiratory and environmental medicine with Queen Mary University of London in the U.K.“With this set of experiments, we have shown that tiny air pollution particles are hijacking our red blood cells, meaning they can also travel almost anywhere in the body,” Grigg said in a news release. “We’re finding more and more evidence that air pollution particles are making their way into many different organs of the body and now we have clear evidence of how that could be happening.”Air pollution particles typically are 2.5 microns or less in width, according to the U.S. Environmental Protection Agency. By comparison, a human hair is 50 to 70 microns wide.For the new study, researchers recruited 12 adults who were asked to spend an hour standing next to a busy London street. The participants all carried a small device that measured the particle pollution in the air around them.Blood samples showed an increase in the amount of pollution particles stuck to participants’ red blood cells after they spent their hour out by the busy road, researchers said.On average, there were two to three times as much particle matter stuck to their red blood cells after an hour next to traffic, results showed.In some, levels decreased after an hour but remained high for others, suggesting that people’s bodies might differ in how they filter out the pollution breathed in, researchers said.All told, researchers calculated that around 80 million red blood cells could be assumed to be transporting pollution particles after a person spends an hour by traffic.Eight of the volunteers later returned to repeat the experiment on a different day, while wearing a face mask designed to screen out particle pollution.When people wore face masks, the amount of pollution particles found on their red blood cell did not increase after standing by a busy road. That shows wearing a filter mask reduces the amount of particle pollution a person inhales, researchers said.“We were surprised to find how well an FFP2 face mask prevents these very tiny particles from reaching and attaching to blood cells,” Grigg said. FFP is a European standard for face masks, and an FFP2 provides about the same level of protection as N95 and KN95 respirators.To confirm these findings, researchers exposed human red blood cells and mice to diesel exhaust in the lab.The particles stuck easily to red blood cells from both humans and mice, and the more particles that researchers added, the more they found stuck to the cells.Analysis of the particles found on blood cells showed that they contained iron, copper, silicon, chromium and zinc, which are produced by car exhaust, as well as silver and molybdenum produced by brake or tire wear, researchers said.“This technique means we now have a relatively simple way to measure the amount of pollution entering the body, so now we can test out which factors might increase or reduce the problem,” Grigg said.Ane Johannessen, chair of the European Respiratory Society’s expert group on epidemiology and environment, reviewed the findings.The new study “sheds light on how these dangerous particles might be infiltrating every part of the body via the bloodstream,” she said in a news release.“It also suggests we could lower the risk with the right protective face mask,” continued Johannessen, who was not involved in the study. This could be beneficial for people who are vulnerable because they have a lung disease, or who cannot avoid spending time next to a busy road, she said.“However, most of us cannot avoid being exposed to dangerously high levels of air pollution in our daily lives, so we need laws to dramatically lower air pollution and reduce the risk for everyone,” Johannessen concluded.SOURCE: European Respiratory Society, news release, Oct. 2, 2025Copyright © 2025 HealthDay. All rights reserved.

Advocates raise alarm over Pfas pollution from data centers amid AI boom

Tech companies’ use of Pfas gas at facilities may mean data centers’ climate impact is worse than previously thoughtData centers’ electricity demands have been accused of delaying the US’s transition to clean energy and requiring fossil fuel plants to stay online, while their high level of water consumption has also raised alarm. Now public health advocates fear another environmental problem could be linked to them – Pfas “forever chemical” pollution.Big tech companies like Google, Microsoft and Amazon often need data centers to store servers and networking equipment that process the world’s digital traffic, and the artificial intelligence boom is driving demand for more facilities. Continue reading...

Data centers’ electricity demands have been accused of delaying the US’s transition to clean energy and requiring fossil fuel plants to stay online, while their high level of water consumption has also raised alarm. Now public health advocates fear another environmental problem could be linked to them – Pfas “forever chemical” pollution.Big tech companies like Google, Microsoft and Amazon often need data centers to store servers and networking equipment that process the world’s digital traffic, and the artificial intelligence boom is driving demand for more facilities.Advocates are particularly concerned over the facilities’ use of Pfas gas, or f-gas, which can be potent greenhouse gases, and may mean data centers’ climate impact is worse than previously thought. Other f-gases turn into a type of dangerous compound that is rapidly accumulating across the globe.No testing for Pfas air or water pollution has yet been done, and companies are not required to report the volume of chemicals they use or discharge. But some environmental groups are starting to push for state legislation that would require more reporting.Advocates’ concern increased in mid-September when the Environmental Protection Agency announced it would fast-track review of new Pfas and other chemicals used by data centers. The data center industry has said the Pfas it uses causes minimal pollution, but advocates disagree.“We know there are Pfas in these centers and all of that has to go somewhere,” said Jonathan Kalmuss-Katz, an attorney with the Earthjustice non-profit, which is monitoring Pfas use in data centers. “This issue has been dangerously understudied as we have been building out data centers, and there’s not adequate information on what the long term impacts will be.”Pfas are a class of about 16,000 chemicals most frequently used to make products water-, stain- and grease-resistant. The compounds have been linked to cancer, birth defects, decreased immunity, high cholesterol, kidney disease and a range of other serious health problems. They are dubbed “forever chemicals” because they do not naturally break down in the environment.Environmental advocates say the data centers increase Pfas pollution directly and indirectly. The chemicals are needed in the centers’ operations – such as its cooling equipment – which almost certainly leads to some on-site pollution. Meanwhile, Pfas used in the equipment housed in the centers must be disposed of, which is difficult because the chemicals cannot be fully destroyed. Meanwhile, a large quantity of Pfas are used to produce the semiconductors housed in data centers, which will increase pollution around supporting manufacturing plants.The revelations come as the US seeks an edge over China as the industry leader in AI, and there has been little political interest in reining in the centers’ pollution.“The US and China are racing to see who can destroy the environment most quickly,” said Lenny Siegel, a member of Chips Communities United, a group working with industry and administration officials to try to implement environmental safeguards. “If we had a sensible approach to these things then someone would have to present some answers before they develop and use these systems.”Two kinds of cooling systems are used to prevent the semiconductors and other electronic equipment stored in data centers from overheating. Water cooling systems require huge volumes of water, and chemicals like nitrates, disinfectants, azoles and other compounds are potentially added and discharged in the environment.Many centers are now switching to a “two phase” system that uses f-gas as a refrigerant coolant that is run through copper tubing. In this scenario, f-gas is not intentionally released during use, though there may be leaks, and it must be disposed of at the end of its life.The data center industry has claimed that f-gas that escapes is not a threat because, once in the air, it turns into a compound called Tfa. Tfa is considered a Pfas in most of the world, but not the US. Recent research has found it is more toxic than previously thought, and may impact reproductive systems similar to other Pfas.Researchers in recent years have been alarmed by the ever-growing level of Tfa in the air, water, human blood and elsewhere in the environment. Meanwhile, some f-gases are potent greenhouse gases that can remain in the atmosphere for thousands of years. But f-gasses are lucrative for industry: about 60% of all Pfas manufactured from 2019 to 2022 were f-gas.Different Pfas are also applied to data centers’ cables, piping and electronic equipment. The chemicals are volatile, meaning they can simply move into the air from the equipment.Meanwhile, any of that equipment or Pfas waste that is intentionally removed from data centers either ends up in landfills, where it can pollute local waters, or is incinerated, according to industry documents. But incineration does not fully destroy Pfas compounds – it breaks them into smaller pieces that are still Pfas, or other byproducts with unknown health risks.Data centers are a “huge generator of electronic waste, with frequent upgrades to new equipment”, said Mike Belliveau, the founder of the Bend the Curve non-profit who has lobbied on toxic chemical legislation.“The processing and disposal of electronic waste is a major source of global harm,” he added.F-gas producer Chemours is using the boom in AI and data centers as justification for increasing production at its Parkersburg, West Virginia, and Fayetteville, North Carolina, plants.Both plants have been accused of polluting their regions’ water, soil and air, and poisoning drinking water. Residents in both regions say they’ve been sickened by Chemours’s pollution. Chemours’s expansion plans have been met with opposition over fears that its pollution will also increase.A new coalition of Minnesota environmental groups is working with state lawmakers to develop legislation that would require companies to report on their use of Pfas and other chemicals in the cooling process.Legislators in state hearings have asked tech companies which chemicals are used in data centers and how they are disposed of, but “the answers are not satisfactory”, said Avonna Starck, Minnesota state director for Clean Water Action, which is spearheading the effort.“There’s so much you just don’t know and we’re at the whim of these big corporations and what they’re willing to tell us,” Starck said. “We think the community has a right to know these things.”

Air Pollution Worsens Sleep Apnea

By Dennis Thompson HealthDay ReporterWEDNESDAY, Oct. 1, 2025 (HealthDay News) — Air pollution could be making matters worse for people with sleep...

By Dennis Thompson HealthDay ReporterWEDNESDAY, Oct. 1, 2025 (HealthDay News) — Air pollution could be making matters worse for people with sleep apnea, according to a new study.Sleep apnea patients have more episodes of reduced or stopped breathing during their slumber in areas with heavier air pollution, researchers reported Tuesday at an European Respiratory Society meeting in Amsterdam.Further, these sleep apnea episodes increased as air became more polluted, researchers found.“We confirmed a statistically significant positive association between average long-term exposure to air pollution, specifically fine particles known as PM10, and the severity of obstructive sleep apnea,” researcher Martino Pengo, an associate professor from the University of Milano-Bicocca in Italy, said in a news release.PM10 particles are less than 10 micrometers in diameter, according to the U.S. Environmental Protection Agency. By comparison, a human hair is 50 to 70 micrometers wide.People with sleep apnea snore loudly and their breathing starts and stops during the night, disturbing their sleep. The condition is known to increase risk of high blood pressure, stroke, heart disease and type 2 diabetes, according to the Mayo Clinic.For the study, researchers tracked more than 19,000 patients with sleep apnea from 25 cities in 14 countries. The team compared the patients’ apnea data from sleep studies with records of particle pollution in the air where they live.Results showed that the number of respiratory events — breathing slowing or stopping — per hour of sleep increased by 0.41 for every one-unit increase in PM10 particle pollution.“This effect may seem small for an individual, but across entire populations it can shift many people into higher-severity categories, making it meaningful from a public health perspective,” Pengo said.Researchers also found the link between particle pollution and sleep apnea varied in strength between cities. People in Lisbon, Paris and Athens were more affected by air pollution.“In some cities, the impact was stronger; in others, it was weaker or even absent,” Pengo said. “These regional differences might be due to things like local climate, the type of pollution or even how health care systems detect obstructive sleep apnea.”Sophia Schiza, head of the European Respiratory Society’s expert group on sleep disordered breathing, said that “for people with obstructive sleep apnea, especially those living in cities with high levels of air pollution, this study is important as it suggests pollution could be making their condition worse.”The study strengthens the connection between environmental health and sleep medicine, added Schiza, a professor of pulmonology at the University of Crete in Greece who was not involved in the research. “It reminds us that tackling air pollution isn't just good for the planet, it's also vital for our lungs and our sleep quality too,” she said in a news release.Findings presented at medical meetings should be considered preliminary until published in a peer-reviewed journal.SOURCE: European Respiratory Society, news release, Sept. 30, 2025Copyright © 2025 HealthDay. All rights reserved.

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