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Thames Water supply ‘on knife-edge’ with £23bn repairs needed

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Sunday, November 17, 2024

Thames Water has £23bn of assets that are in urgent need of repair and the supply of water to its 16 million customers is “on a knife-edge”, a Guardian investigation can reveal.Britain’s biggest water company has failed to tackle adequately serious safety concerns, has not upgraded essential IT systems and has tolerated a culture of intimidation among staff, according to insiders and an analysis of documents.The investigation suggests that the company is in a worse financial state than previously admitted, and neither its managers or regulators appear to have grasped the perilous state of some of its reservoirs and pipes.The Guardian has also discovered that key data is still managed on obsolete software that dates to 1989. Sources claim that the company has been subject to cyber-attacks from groups affiliated with hostile states, including Russia.A spokesperson for Thames Water said: “The wellbeing and safety of our colleagues and customers is our highest priority.” Regarding cyber-attacks, Thames declined to comment on the record, but a source at the company said it had “not experienced any cyber-attacks, full stop”.The Guardian has spent several months investigating the finances and culture of Thames Water.Sources described how concerns about the company’s governance and operations had been raised at the highest levels of management. Yet they claimed that the problems had not been tackled, suggesting that the scale of the turnaround required at Thames may have been underestimated.“Operations have been hollowed out and cut to the bone,” a senior source at Thames said. “We’re putting the public at risk by failing to invest in the most basic needs.”They added that, in their view, management had not moved quickly enough to address problems such as weakening explosive infrastructure – such as containers holding the gas produced by sewage – and cracks in reservoirs. They said Thames’s management and the regulator, Ofwat, had been slow to address these problems, allowing them to escalate.The supply of water to capital is on a “knife-edge”, insiders claim, saying the scale of deterioration of Thames’s critical infrastructure and pressures on its staff have not been grasped by regulators or the company.Thames Water is labouring under £15bn of debt and has said it cannot repay some of its lenders. The company serves 16 million customers across London and the south-east.Whitehall sources fear that it will inevitably face a form of temporary renationalisation that will ultimately come at huge expense for the taxpayer.Current and former staff claimed that Thames Water’s finances were so dire that managers had tried to block or slow down spending on critical chemicals, forcing them to order water treatment chemicals without agreement from senior management. Processes had become so slow, with costs above £50,000 being subject to additional checks from senior bosses, that the only way to keep clean water flowing was to “proceed without approval”, staff said.A spokesperson for Thames Water said: “We take a rigorous approach to financial discipline throughout the company in order to operate within budget, as any business in turnaround would be expected to do.”Several staff also claim there is a culture of intimidation on costs. With management unwilling to approve the necessary budgets, it was impossible to order basic, urgent IT upgrades, leaving a key part of the UK’s critical national infrastructure exposed to cyber-attacks, they claimed. Staff claimed that they had been belittled by senior figures in meetings and correspondence when asking for extra resources.Others claim that after inspecting critical infrastructure such as reservoirs they were asked by managers if they had deliberately manipulated images to show cracks and other signs of deterioration.Thames Water’s head office in Reading. The company said it took ‘a rigorous approach to financial discipline’. Photograph: Geoffrey Swaine/ShutterstockThe state of Thames and its peers’ debt piles, as well as their impact on the environment, has triggered public debate over how weak regulation may have allowed decades of exploitative privatisation and financial mismanagement. Thames Water’s cash pile was being burned through at far more rapid rate that was initially expected this year, sources claimed, as repairs regarded as critical for safety become imperative.Thames Water now needed £23bn to repair its failing infrastructure, sources claimed. There were also fears that the figure could balloon further as a “catch-22” of regulatory pressure to cut costs and keep bills low comes after years of “doing less than the bare minimum”, a senior source at the company said.With about £15bn in debt for its operating company, the total bill posed by Thames being thrust into a form of temporary renationalisation could be as high as £38bn. However, much of the debt could be wiped out and creditors forced to shoulder losses in such an event.skip past newsletter promotionSign up to Business TodayGet set for the working day – we'll point you to all the business news and analysis you need every morningPrivacy Notice: Newsletters may contain info about charities, online ads, and content funded by outside parties. For more information see our Privacy Policy. We use Google reCaptcha to protect our website and the Google Privacy Policy and Terms of Service apply.after newsletter promotionThames is close to securing a £3bn debt lifeline, without which it faces insolvency by Christmas.The £23bn needed is an estimate based on a series of reviews of the state of its assets, including the network of pipes and treatment works that provide water to 16 million customers. It relies on interviews with water quality experts, IT technicians and health and safety professionals and documents to work out the latest costs involved in urgent repairs.The rate of deterioration across all aspects of the water company’s operations has gathered pace such that a previous disclosure of £19bn in failing assets, reported by the company in 2023, is now regarded as a significant underestimate.It goes some way to explaining the accelerating cash burn at the company that led it to warn this autumn that it needed more time to make payments on its debts. Its deteriorating credit rating now breaches its obligations under its licence, granted by Ofwat.While some managers and workers have tried to make changes at the company, many have quit or become disillusioned with the senior leadership team and some board members.A Thames Water spokesperson said: “The wellbeing and safety of our colleagues and customers is our highest priority. We supply 2.6bn litres of water every day, rated among the highest quality of drinking water anywhere in the world.“We’ve been very open about the ‘asset deficit’ we face, and the challenges we will have meeting future demand if it’s not addressed. That’s why we have set out an ambitious plan for 2025-30 which asks for £20.7bn of expenditure and investment with an additional £3bn through gated mechanisms, so that we can meet our customers’ expectations and environmental responsibilities.“Further, we take our requirements to protect customers’ personal data and maintain essential services extremely seriously. We regularly review our systems to ensure their continued reliability.”An Ofwat spokesperson said: “The Guardian has raised a number of serious allegations about Thames Water. We will take action if there is evidence of breach of the company’s obligations.“We have been pushing Thames Water to make significant improvements in its operational performance and financial resilience for some time. It is of course essential that all water companies provide a safe and reliable water supply. The company has made a request for a substantial increase in expenditure, including to address issues of asset health, as part of the current price review process. We are reviewing that request and the supporting information provided, and will announce our final decisions in December.“In assessing the business case put forward by companies and in our enforcement work, we work closely with other regulators where needed and seek their views. This includes the Drinking Water Inspectorate in regard to security and cyber measures related to water services, and the Health and Safety Executive and National Cyber Security Centre on matters relating to safety and cybersecurity.”A spokesperson for the Drinking Water Inspectorate, which regulates water companies, said: “The Drinking Water Inspectorate considers the provision of a continuous, safe supply of clean drinking water to be the highest priority of a water company. Furthermore, this is a duty under the regulations. Where there are any circumstances which give rise to a concern to drinking water, the company are required to notify the inspectorate.“Similarly, water company staff are able report matters directly to the inspectorate. In both cases the inspectorate will carry out an investigation and will take action as necessary to maintain the high standard of drinking water in England. The inspectorate carry out a programme of risk-based audits to identify, monitor and verify areas of concern, and take enforcement action based on our enforcement policies.”

Exclusive: Company has failed to tackle serious safety concerns or upgrade vital IT systems, Guardian investigation revealsFloods, explosions, asbestos: Thames faces problems on all frontsThames Water has £23bn of assets that are in urgent need of repair and the supply of water to its 16 million customers is “on a knife-edge”, a Guardian investigation can reveal.Britain’s biggest water company has failed to tackle adequately serious safety concerns, has not upgraded essential IT systems and has tolerated a culture of intimidation among staff, according to insiders and an analysis of documents. Continue reading...

Thames Water has £23bn of assets that are in urgent need of repair and the supply of water to its 16 million customers is “on a knife-edge”, a Guardian investigation can reveal.

Britain’s biggest water company has failed to tackle adequately serious safety concerns, has not upgraded essential IT systems and has tolerated a culture of intimidation among staff, according to insiders and an analysis of documents.

The investigation suggests that the company is in a worse financial state than previously admitted, and neither its managers or regulators appear to have grasped the perilous state of some of its reservoirs and pipes.

The Guardian has also discovered that key data is still managed on obsolete software that dates to 1989. Sources claim that the company has been subject to cyber-attacks from groups affiliated with hostile states, including Russia.

A spokesperson for Thames Water said: “The wellbeing and safety of our colleagues and customers is our highest priority.” Regarding cyber-attacks, Thames declined to comment on the record, but a source at the company said it had “not experienced any cyber-attacks, full stop”.

The Guardian has spent several months investigating the finances and culture of Thames Water.

Sources described how concerns about the company’s governance and operations had been raised at the highest levels of management. Yet they claimed that the problems had not been tackled, suggesting that the scale of the turnaround required at Thames may have been underestimated.

“Operations have been hollowed out and cut to the bone,” a senior source at Thames said. “We’re putting the public at risk by failing to invest in the most basic needs.”

They added that, in their view, management had not moved quickly enough to address problems such as weakening explosive infrastructure – such as containers holding the gas produced by sewage – and cracks in reservoirs. They said Thames’s management and the regulator, Ofwat, had been slow to address these problems, allowing them to escalate.

The supply of water to capital is on a “knife-edge”, insiders claim, saying the scale of deterioration of Thames’s critical infrastructure and pressures on its staff have not been grasped by regulators or the company.

Thames Water is labouring under £15bn of debt and has said it cannot repay some of its lenders. The company serves 16 million customers across London and the south-east.

Whitehall sources fear that it will inevitably face a form of temporary renationalisation that will ultimately come at huge expense for the taxpayer.

Current and former staff claimed that Thames Water’s finances were so dire that managers had tried to block or slow down spending on critical chemicals, forcing them to order water treatment chemicals without agreement from senior management. Processes had become so slow, with costs above £50,000 being subject to additional checks from senior bosses, that the only way to keep clean water flowing was to “proceed without approval”, staff said.

A spokesperson for Thames Water said: “We take a rigorous approach to financial discipline throughout the company in order to operate within budget, as any business in turnaround would be expected to do.”

Several staff also claim there is a culture of intimidation on costs. With management unwilling to approve the necessary budgets, it was impossible to order basic, urgent IT upgrades, leaving a key part of the UK’s critical national infrastructure exposed to cyber-attacks, they claimed. Staff claimed that they had been belittled by senior figures in meetings and correspondence when asking for extra resources.

Others claim that after inspecting critical infrastructure such as reservoirs they were asked by managers if they had deliberately manipulated images to show cracks and other signs of deterioration.

Thames Water’s head office in Reading. The company said it took ‘a rigorous approach to financial discipline’. Photograph: Geoffrey Swaine/Shutterstock

The state of Thames and its peers’ debt piles, as well as their impact on the environment, has triggered public debate over how weak regulation may have allowed decades of exploitative privatisation and financial mismanagement. Thames Water’s cash pile was being burned through at far more rapid rate that was initially expected this year, sources claimed, as repairs regarded as critical for safety become imperative.

Thames Water now needed £23bn to repair its failing infrastructure, sources claimed. There were also fears that the figure could balloon further as a “catch-22” of regulatory pressure to cut costs and keep bills low comes after years of “doing less than the bare minimum”, a senior source at the company said.

With about £15bn in debt for its operating company, the total bill posed by Thames being thrust into a form of temporary renationalisation could be as high as £38bn. However, much of the debt could be wiped out and creditors forced to shoulder losses in such an event.

skip past newsletter promotion

after newsletter promotion

Thames is close to securing a £3bn debt lifeline, without which it faces insolvency by Christmas.

The £23bn needed is an estimate based on a series of reviews of the state of its assets, including the network of pipes and treatment works that provide water to 16 million customers. It relies on interviews with water quality experts, IT technicians and health and safety professionals and documents to work out the latest costs involved in urgent repairs.

The rate of deterioration across all aspects of the water company’s operations has gathered pace such that a previous disclosure of £19bn in failing assets, reported by the company in 2023, is now regarded as a significant underestimate.

It goes some way to explaining the accelerating cash burn at the company that led it to warn this autumn that it needed more time to make payments on its debts. Its deteriorating credit rating now breaches its obligations under its licence, granted by Ofwat.

While some managers and workers have tried to make changes at the company, many have quit or become disillusioned with the senior leadership team and some board members.

A Thames Water spokesperson said: “The wellbeing and safety of our colleagues and customers is our highest priority. We supply 2.6bn litres of water every day, rated among the highest quality of drinking water anywhere in the world.

“We’ve been very open about the ‘asset deficit’ we face, and the challenges we will have meeting future demand if it’s not addressed. That’s why we have set out an ambitious plan for 2025-30 which asks for £20.7bn of expenditure and investment with an additional £3bn through gated mechanisms, so that we can meet our customers’ expectations and environmental responsibilities.

“Further, we take our requirements to protect customers’ personal data and maintain essential services extremely seriously. We regularly review our systems to ensure their continued reliability.”

An Ofwat spokesperson said: “The Guardian has raised a number of serious allegations about Thames Water. We will take action if there is evidence of breach of the company’s obligations.

“We have been pushing Thames Water to make significant improvements in its operational performance and financial resilience for some time. It is of course essential that all water companies provide a safe and reliable water supply. The company has made a request for a substantial increase in expenditure, including to address issues of asset health, as part of the current price review process. We are reviewing that request and the supporting information provided, and will announce our final decisions in December.

“In assessing the business case put forward by companies and in our enforcement work, we work closely with other regulators where needed and seek their views. This includes the Drinking Water Inspectorate in regard to security and cyber measures related to water services, and the Health and Safety Executive and National Cyber Security Centre on matters relating to safety and cybersecurity.”

A spokesperson for the Drinking Water Inspectorate, which regulates water companies, said: “The Drinking Water Inspectorate considers the provision of a continuous, safe supply of clean drinking water to be the highest priority of a water company. Furthermore, this is a duty under the regulations. Where there are any circumstances which give rise to a concern to drinking water, the company are required to notify the inspectorate.

“Similarly, water company staff are able report matters directly to the inspectorate. In both cases the inspectorate will carry out an investigation and will take action as necessary to maintain the high standard of drinking water in England. The inspectorate carry out a programme of risk-based audits to identify, monitor and verify areas of concern, and take enforcement action based on our enforcement policies.”

Read the full story here.
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Scientists Hope Underwater Fiber-Optic Cables Can Help Save Endangered Orcas

Scientists from the University of Washington recently deployed a little over 1 mile of fiber-optic cable in the Salish Sea to test whether internet cables can monitor endangered orcas

SAN JUAN ISLAND, Wash. (AP) — As dawn broke over San Juan Island, a team of scientists stood on the deck of a barge and unspooled over a mile of fiber-optic cable into the frigid waters of the Salish Sea. Working by headlamp, they fed the line from the rocky shore down to the seafloor — home to the region's orcas.The bet is that the same hair-thin strands that carry internet signals can be transformed into a continuous underwater microphone to capture the clicks, calls and whistles of passing whales — information that could reveal how they respond to ship traffic, food scarcity and climate change. If the experiment works, the thousands of miles of fiber-optic cables that already crisscross the ocean floor could be turned into a vast listening network that could inform conservation efforts worldwide.The technology, called Distributed Acoustic Sensing, or DAS, was developed to monitor pipelines and detect infrastructure problems. Now University of Washington scientists are adapting it to listen to the ocean. Unlike traditional hydrophones that listen from a single spot, DAS turns the entire cable into a sensor, allowing it to pinpoint the exact location of an animal and determine the direction it’s heading.“We can imagine that we have thousands of hydrophones along the cable recording data continuously,” said Shima Abadi, professor at the University of Washington Bothell School of STEM and the University of Washington School of Oceanography. “We can know where the animals are and learn about their migration patterns much better than hydrophones.”The researchers have already proven the technology works with large baleen whales. In a test off the Oregon coast, they recorded the low-frequency rumblings of fin whales and blue whales using existing telecommunications cables.But orcas present a bigger challenge: Their clicks and calls operate at high frequencies at which the technology hasn’t yet been tested.The stakes are high. The Southern Resident orcas that frequent the Salish Sea are endangered, with a population hovering around 75. The whales face a triple threat: underwater noise pollution, toxic contaminants and food scarcity.“We have an endangered killer whale trying to eat an endangered salmon species,” said Scott Veirs, president of Beam Reach Marine Science and Sustainability, an organization that develops open-source acoustic systems for whale conservation.The Chinook salmon that orcas depend on have declined dramatically. Since the Pacific Salmon Commission began tracking numbers in 1984, populations have dropped 60% due to habitat loss, overfishing, dams and climate change.Orcas use echolocation – rapid clicks that bounce off objects – to find salmon in murky water. Ship noise can mask those clicks, making it difficult for them to hunt.If DAS works as hoped, it could give conservationists real-time information to protect the whales. For instance, if the system detects orcas heading south toward Seattle and calculates their travel speed, scientists could alert Washington State Ferries to postpone noisy activities or to slow down until the whales pass.“It will for sure help with dynamic management and long-term policy that will have real benefits for the whales,” Veirs said.The technology would also answer basic questions about orca behavior that have eluded scientists, such as determining whether their communication changes when they’re in different behavioral states and how they hunt together. It could even enable researchers to identify which sound is coming from a particular whale — a kind of voice recognition for orcas.The implications extend far beyond the Salish Sea. With some 870,000 miles (1.4 million kilometers) of fiber-optic cables already installed underwater globally, the infrastructure for ocean monitoring largely exists. It just needs to be tapped. “One of the most important challenges for managing wildlife, conserving biodiversity and combating climate change is that there’s just a lack of data overall,” said Yuta Masuda, director of science at Allen Family Philanthropies, which helped fund the project.The timing is critical. The High Seas Treaty enters into force in January, which will allow for new marine protected areas in international waters. But scientists still don’t understand how human activities affect most ocean species or where protections are most needed. A dataset as vast as the one the global web of submarine cables could provide might help determine which areas should be prioritized for protection.“We think this has a lot of promise to fill in those key data gaps,” Masuda said.Back on the barge, the team faced a delicate task: fusing two fibers together above the rolling swell. They struggled to align the strands in a fusion splicer, a device that precisely positions the fiber ends before melting them together with an electric current. The boat rocked. They steadied their hands and tried again, and again. Finally, the weld held. Data soon began flowing to a computer on shore, appearing as waterfall plots — cascading visualizations that show sound frequencies over time. Nearby, cameras trained on the water stood ready so that if a vocalization was detected, researchers could link a behavior with a specific call.All that was left was to sit and wait for orcas.The Associated Press receives support from the Walton Family Foundation for coverage of water and environmental policy. The AP is solely responsible for all content. For all of AP’s environmental coverage, visit https://apnews.com/hub/climate-and-environmentCopyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See – Oct. 2025

New York to appeal after judge OKs radioactive Indian Point water in the Hudson

Governor Kathy Hochul has confirmed that the Indian Point nuclear plant will not be reopened, despite a federal judge's ruling that the state's Save the Hudson Act, which aimed to prevent the dumping of radioactive wastewater into the Hudson River, was invalid.

ALBANY, N.Y. (NEXSTAR) — A federal judge in New York last month struck down the state's Save the Hudson Act, a law that aimed to prevent Holtec International, the owner of the decommissioned Indian Point nuclear plant, from dumping over a million gallons of radioactive wastewater into the Hudson River. Still, despite the ruling and her openness to expand nuclear power in the state, Gov. Kathy Hochul (D) maintains that the site will not reopen. "Let me say this plainly: No," Hochul wrote in a letter to Westchester County Executive Ken Jenkins on Friday, which can be read at the bottom of this story. Entergy, the previous owners of the Indian Point Energy Center, shut down its final reactor, Unit 3, in April 2021. Holtec bought the three-unit nuclear power plant located in the northwestern corner of Westchester County on the eastern bank of the Hudson River in May 2021. Use it or lose it: Summer EBT food benefits expiring Friday The plant is undergoing a decommissioning process that includes removing equipment and structures, reducing residual radioactivity, and dismantling the facility. Holtec projects that process to finish by 2033. The U.S. District Court for the Southern District of New York sided with Holtec in a lawsuit they filed in April 2024, agreeing that state law can't block the discharge of radioactive wastewater from nuclear sites being decommissioned. The court found that only the federal government has that authority, because federal law like the Atomic Energy Act overrules the state under the Supremacy Clause of the U.S. Constitution. Hochul launches $1B clean climate plan as state, federal energy agendas diverge The judge determined that S6893/A7208 wasn't meant to protect the radiological safety of the public or the environment, which falls under federal jurisdiction. Gov. Kathy Hochul and Attorney General Letitia James announced their intent to appeal the decision, arguing that the law represents vital protections for the iconic river and the economic health of the region through tourism and real estate values. Jenkins applauded the decision to appeal, saying, "The Hudson River is the lifeblood of our region—a source of recreation, natural beauty, and economic vitality—and we must do everything in our power to protect it." And in the letter to Jenkins, Hochul directly addressed the concern that the state government may plan to reopen Indian Point or build small modular reactors on the site. NYC storm cancels Columbus Day parade amid Indigenous Peoples Day debate "There have been no discussions or plans," the governor wrote. "I would not support efforts to do so." Riverkeeper, an environmental advocacy group, called the ruling a blow to the progress made in restoring the Hudson River. They worked with local officials to pass the Save the Hudson Act in 2023 after Holtec announced plan to release the wastewater. New York’s 2040 energy grid: Nuclear power, public renewables, and fracked gas pipelines The wastewater in question is contaminated with tritium, a radioactive isotope of hydrogen created during the nuclear fission process. Tritium—whose half-life is 12 years—bonds with oxygen, meaning the wastewater cannot be filtered. S6893/A7208, signed by Hochul in August 2023, lets the attorney general enforce the ban with civil penalties of $37,500 for the first day of violation, $75,000 for the second, and $150,000 per violation thereafter. It came in response to Holtec's initial plan to put between 1.3 and 1.5 million gallons of tritiated water from the spent fuel pools, reactor cavity, and other holding tanks into the Hudson. The company maintained that discharge would be the safest option for the tritiated water, that the planned release represented just 5% of what the plant discharged historically, and that the plan followed federal guidelines. Data challenges tax flight claims in New York The company wanted to start dewatering with three 18,000-gallon batches—45,000 gallons in total—in May 2023. Holtec paused their initial plan so the state could perform independent sampling and analysis of the water. Federal water standards set the maximum contaminant level for tritium at 20,000 picocuries per liter, though California, for example, aims to say below 400 picocuries of tritium per liter. Regulations on radioactive releases from the Nuclear Regulatory Commission, the federal body managing decommissions, are based on the dose to the public, regardless of the volume of the discharge. NRC has an internal goal to keep the dose from liquid releases below three millirem per year at the release point, and a legal limit of 25 millirem per year. Power struggle: New York lawmakers, environmentalists clash over electricity The calculated dose to the public from Indian Point in 2021 was about 0.011966 millirem—about one-thousandth of the federal cap. Plus, NRC allows several disposal methods, including transferring the waste, storing it for decay, or releasing it into the environment. Still, critics said the discharge would undermine local economies, erode public trust, and doom the Hudson even as more New Yorkers swim, boat, fish, and work on and in the river. Riverkeeper said there are alternatives, like storing the water for its 12-year half-life. They want the contaminated water to be held at Indian Point for at least 12 years, when its radioactivity will be reduced by half, before exploring any alternative disposal. Gas pipelines eye return to New York But delaying the discharge process could force lay offs of specialized Holtec workers. The company already extended decommissioning timelines at two other sites—Pilgrim and Oyster Creek—from eight to 12 years because of inflated costs and poor market performance. In the letter to Jenkins, Hochul confirmed her support for nuclear as part of the state's energy strategy, but that any new plant would be upstate, and only in communities that want it. Hochul said that downstate New York needs to rely on energy sources like the Champlain Hudson Power Express transmission line, set to bring hydroelectricity from Canada. New York Republican Senators propose scaling back climate laws She characterized the decision to close Indian Point as a hasty failure that caused emissions to rise. It happened before her administration, Hochul argued, and the state "lost 25% of the power that was going to New York City without having a Plan B." Take a look at the letter below: Hochul Indian point letter to JenkinsDownload Arizona AG threatens legal action if Johnson doesn't seat recently elected Democrat FDA expands cinnamon recall to 16 brands with elevated lead levels New York to appeal after judge OKs radioactive Indian Point water in the Hudson Bondi says Facebook has removed page targeting ICE agents after DOJ outreach Live updates: Trump to honor Kirk with Medal of Freedom; Senate to vote as shutdown hits Day 14

Fish Kill at Clear Lake Reveals a Seven-Foot Sturgeon Surprise 

A problem lake was doing pretty well this year. Then came a series of unfortunate water-quality events. The post Fish Kill at Clear Lake Reveals a Seven-Foot Sturgeon Surprise  appeared first on Bay Nature.

Tiny silver fish float up at Clear Lake in August. Big Valley Band of Pomo Indians records indicate this was the biggest fish kill since 2017. (Courtesy of Luis Santana)As Luis Santana motored out onto Clear Lake this August, it seemed at first like a normal summer day out on the water: warm air, cloudy skies, and the wide lake waters full of what seemed like bubbles from the waves.  “Then I stopped, and I was like, Oh my god,” Santana, a fisheries biologist with the Robinson Rancheria tribe, recalls. Those weren’t bubbles; they were millions of dead threadfin shad, and others. “I saw literally every species of fish found in the lake,” except for the Clear Lake tule perch, Santana says. The measurements he took that day revealed what likely killed them: a near-total lack of oxygen in the lake. The fish had, essentially, suffocated. Amid the silver-lined shores, one fish washed up that no one had known to be a resident: a dead seven-foot-long white sturgeon. It was Clear Lake’s first on record. No one knows for sure how it got into the waters, but Santana thinks it died with the shad. White sturgeon (Acipenser transmontanus), the biggest freshwater fish in North America, live in the Bay-Delta. They became a candidate for listing as a threatened species under the California Endangered Species Act after a 2022 harmful algal bloom that killed hundreds of them.  Big ’un: A white sturgeon—in Clear Lake? CDFW says the average sturgeon caught in the Delta these days is about 3.6 feet long, and it is rare to encounter fish larger than 6.5 feet long in California. This one was seven feet. (Courtesy of Luis Santana)This fall’s fish die-off is the lake’s largest since at least 2017, according to records from the Big Valley Band of Pomo Indians. And it is yet another environmental black mark for a lake—California’s largest freshwater body—that has been consistently troubled by poor water quality. Now, scientists are uncovering the exact cause of the die-off—and analyzing the sturgeon for more answers. For Angela DePalma-Dow, a lake scientist and executive director of the Lake County Land Trust, the event reminds her: “There’s so much we can learn from Clear Lake.”  As a five-year-old, Santana spent every summer day swimming in Clear Lake. That’s a distant dream now. The summer lake—despite the name—is rarely clear; more often, it’s clouded dirty green as harmful algal blooms take over the waters. Sometimes, Santana thinks the water smells like sewage. “I don’t think my kids have ever swam in Clear Lake,” Santana says.  Fish die-offs and fish kills are a consequence of these impaired conditions, especially the frequent harmful algal blooms (HABs), during which algae decompose and strip the water of oxygen (while also filling the water with cyanotoxins). The Big Valley Band of Pomo Indians has tracked harmful algal blooms in Clear Lake since 2014. The program started after five years of “thick, noxious blooms covering [Clear Lake’s] surface” (as the tribe writes in a history of the program) and no regular monitoring from the state, despite recommendations from the California Office of Environmental Health Hazard Assessment. “We just needed to have more data,” says Sarah Ryan, the environmental director at the Big Valley Band of Pomo Indians.  “It seems like they have fish kills every year,” says Ben Ewing, who studies the endemic Clear Lake hitch, a large minnow, at the California Department of Fish and Wildlife. “I lost track with how many.” In 2017, the state Legislature formed a committee to restore the lake, citing high mercury levels, dangerous contaminants in fish, and the regular HABs; to date, it has led to tens of millions in state funding for research, restoration, and education projects on Clear Lake, including helping sustain water quality monitoring cut by the state during the Covid pandemic.  Cyanobacteria bloom at Redbud Park, in Clear Lake’s southeast arm, in July 2020. Big Valley Pomo EPA’s sampling found toxins at a “warning” level. The lake is frequently beset by harmful algal blooms. (Courtesy of Big Valley Band of Pomo Indians)This die-off, Ewing says, caught lake-watchers off guard because 2025 seemed like the year Clear Lake might escape a fish kill. The characteristic pea soup of harmful algal blooms had been noticeably absent. Instead, the cause was likely a perfect storm of other conditions, says Ewing. “Everything had to line up correctly for this to happen,” he says.  Two bountiful water seasons laid the ground for it, DePalma-Dow explains. Fish populations—especially nonnative bait fish like shad—boomed with the increased water, which also meant some fish naturally died. She speculates that as their bodies decomposed, they stripped oxygen from the water column. Then, this fall, heavy winds came and distributed the low-oxygen water throughout the water column. A series of cloudy mornings arrived, during which the lake’s aquatic plants couldn’t respire oxygen back into the water. So more fish likely died, triggering oxygen levels to further plummet. Eventually, conditions became fatal for all species of fish. Santana says he measured “basically zeroes on every level” for dissolved oxygen through the water column. DePalma-Dow says this process is just the lake self-regulating, as fish populations outstrip the oxygen available. “This is totally not surprising for a lake cycle event,” she says. “This is a big, huge, natural system.” Santana blames human disturbance for the die-off. “We took away all the habitat that could potentially negate any of these effects,” he says. Clear Lake has lost up to 90 percent of its wetlands, he says, and creeks that might once have provided an infusion of oxygen-rich water into the lake now run dry in May and June. “There’s just so many things we’re taking and taking and not giving back,” he says.  A satellite image of Clear Lake during a May 2024 algal bloom. The emerald color doesn’t tell you whether toxins are present, though. That requires water sampling, which the Big Valley Band of Pomo Indians EPA has been doing since 2014. (Sentinel-2 satellite, via the Copernicus browser)In lieu of those natural processes, technological solutions are being considered: Researchers from UC Davis are exploring installing oxygenators in Clear Lake that could trap nutrients in the sediment under a thin layer of oxygen, theoretically reducing the number of harmful algal blooms—and, possibly, keeping oxygen levels higher so more fish can breathe. “That would be one of the hopeful outcomes,” says DePalma-Dow. Neither the state nor county put out a press release about the die-off, Ryan notes. “It’s always better if you can anticipate the questions and try to get information out.” For now, those living by the lake watch (and smell) the dead fish decompose. “There’s really no post support,” she says.  The August die-off on Clear Lake silvered the shoreline. It claimed fish of “literally every species,” says Luis Santana, a Robinson Rancheria fisheries biologist. (Larger fish on shore courtesy of Luis Santana; silvery shoreline by Shawna McEwan; closeup by Sophia Zesati) Fish populations will likely recover, scientists say. Many fish probably survived, in nooks and crannies. With good winter rains, they can breed and repopulate the waters by spring. This die-off is just another challenge for a beleaguered lake.  As for the sturgeon? USGS scientists were trying to figure out how old it was, and hoping to answer when it got to the lake, but the government shutdown has since paused their work. And they cannot answer questions about their research until the shutdown ends. Santana’s observations of the sturgeon showed it was a female with eggs. For now, the giant fish is a reminder of the treasures that may hide in Clear Lake’s murky waters. “Every year is a mystery and surprise,” DePalma-Dow says.

Millions of households face jump in water bills after regulator backs more price rises

Competition watchdog agrees requests from Anglian, Northumbrian, Southern, Wessex and South East to raise household billsBusiness live – latest updatesWater bills for millions of households in England will increase by even more than expected after the competition regulator gave the green light for five water suppliers to raise charges to customers – but rejected most of the companies’ demands.An independent group of experts appointed by the Competition and Markets Authority (CMA) decided provisionally to let the companies collectively charge customers an extra £556m over the next five years, it said on Thursday. That was only 21% of the £2.7bn that the firms had requested. Continue reading...

Water bills for millions of households in England will increase by even more than expected after the competition regulator gave the green light for five water suppliers to raise charges to customers – but rejected most of the companies’ demands.An independent group of experts appointed by the Competition and Markets Authority (CMA) decided provisionally to let the companies collectively charge customers an extra £556m over the next five years, it said on Thursday. That was only 21% of the £2.7bn that the firms had requested.The five companies – Anglian, Northumbrian, Southern, Wessex and South East – together serve 14.7 million customers. The changes will add 3% on average to those companies’ bills, on top of the 24% increase previously allowed.The companies appealed to the CMA in February for permission to raise bills by more than allowed previously by the industry regulator, Ofwat. They argued they needed more to meet environmental standards.Water bills have become the subject of significant political controversy in recent years in the UK amid widespread disgust over leaks of harmful sewage into Britain’s rivers and seas.Emma Hardy, the water minister, said: “I understand the public’s anger over bill rises – that’s why I expect every water company to offer proper support to anyone struggling to pay.“We’ve made sure that investment cash goes into infrastructure upgrades, not bonuses, and we’re creating a tough new regulator to clean up our waterways and restore trust in the system.”English and Welsh water companies are mostly privately owned, but the prices the local monopolies can charge customers are regulated by Ofwat over five-year periods. Ofwat in December said average annual household bills could rise by 36% to £597 by 2030 to help pay for investment.Ofwat said the companies could spend £104bn in total, paid by consumers.The allowed bill increases stopped well short of the water companies’ requests. The CMA said the expert panel had largely reject companies’ funding requests for new activities and projects beyond those agreed by Ofwat. However, the panel did allow more money for returns to investors, to reflect sustained high interest rates since the bills increases were approved.Anglian Water, serving the east of England and Hartlepool, asked for the average annual household bill to rise to £649 – a 10% increase – but was granted only £599, or 1%. Northumbrian, mainly in north-east England, asked for £515, or 6%, and was given £495, also 1%.South East Water, which only provides drinking water and not sewage services in several home counties, asked for an 18% increase to £322, but was allowed 4% to £286. Southern Water, on England’s south-east coast, asked for a 15% increase to £710. That would have been the highest bill in England and Wales, but it was allowed only a 3% increase to £638.Wessex Water in south-west England asked for an 8% increase to £642, and was granted the biggest proportional increase on appeal of 5% to £622.The CMA and other regulators have faced pressure from the Labour government to put more focus on economic growth. The chancellor, Rachel Reeves, this year appointed former Amazon boss Doug Gurr to lead the CMA.Kirstin Baker, the chair of the group that decided on the appeals, said: “We’ve found that water companies’ requests for significant bill increases, on top of those allowed by Ofwat, are largely unjustified.skip past newsletter promotionSign up to Business TodayGet set for the working day – we'll point you to all the business news and analysis you need every morningPrivacy Notice: Newsletters may contain information about charities, online ads, and content funded by outside parties. If you do not have an account, we will create a guest account for you on theguardian.com to send you this newsletter. You can complete full registration at any time. For more information about how we use your data see our Privacy Policy. We use Google reCaptcha to protect our website and the Google Privacy Policy and Terms of Service apply.after newsletter promotion“We understand the real pressure on household budgets and have worked to keep increases to a minimum, while still ensuring there is funding to deliver essential improvements at reasonable cost.”For affected households, the price increases will add to inflation on the cost of living. Mike Keil, chief executive of the Consumer Council for Water, which represents consumers, said “further increases will be very unwelcome”, and questioned whether the CMA should have allowed higher returns for investors.“There is a danger the customers of these companies will end up paying more, without seeing any additional improvements in return,” he said.Environmental groups have questioned why companies are allowed to return cash to shareholders while continuing to pollute Britain’s rivers and seas. James Wallace, chief executive of River Action, a campaign group, said: “Once again, water bill payers are forced to shoulder the cost of decades of failure.“Millions of households in England face higher bills while rivers continue to suffer from mismanagement by privatised water companies. In 2024 alone, four of these five companies were responsible for at least 1.4m hours of sewage discharges into rivers and seas – a stark illustration of ongoing environmental harm.”The CMA group’s decision will also be carefully considered by Thames Water, Britain’s biggest water company with 16 million customers. Thames also appealed initially but has agreed to pause it while the utility and its creditors negotiate with Ofwat over a restructuring plan to try to cut its debt burden and prevent it collapsing into temporary government control.Thames is still considering a request for a further £4bn. People close to Thames Water had criticised Ofwat’s approach to the price determination, arguing that the utility needed much more cash to turn around its performance on pollution.The best public interest journalism relies on first-hand accounts from people in the know.If you have something to share on this subject you can contact the Business team confidentially using the following methods.Secure Messaging in the Guardian appThe Guardian app has a tool to send tips about stories. Messages are end to end encrypted and concealed within the routine activity that every Guardian mobile app performs. This prevents an observer from knowing that you are communicating with us at all, let alone what is being said.If you don't already have the Guardian app, download it (iOS/Android) and go to the menu. Scroll down and click on Secure Messaging. When asked who you wish to contact please select the Guardian Business team.SecureDrop, instant messengers, email, telephone and postIf you can safely use the tor network without being observed or monitored you can send messages and documents to the Guardian via our SecureDrop platform.Finally, our guide at theguardian.com/tips lists several ways to contact us securely, and discusses the pros and cons of each. Illustration: Guardian Design / Rich Cousins

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