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A River ‘Died' Overnight in Zambia After an Acidic Waste Spill at a Chinese-Owned Mine

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Saturday, March 15, 2025

KITWE, Zambia (AP) — Authorities and environmentalists in Zambia fear the long-term impact of an acid spill at a Chinese-owned mine that contaminated a major river and could potentially affect millions of people after signs of pollution were detected at least 100 kilometers (60 miles) downstream.The spill happened on Feb. 18 when a tailings dam that holds acidic waste from a copper mine in the north of the country collapsed, according to investigators from the Engineering Institution of Zambia. The collapse allowed some 50 million liters of waste containing concentrated acid, dissolved solids and heavy metals to flow into a stream that links to the Kafue River, Zambia’s most important waterway, the engineering institution said.“It is an environmental disaster really of catastrophic consequences,” said Chilekwa Mumba, an environmental activist who works in Zambia's Copperbelt Province.China is the dominant player in copper mining in Zambia, a southern African nation which is among the world’s top 10 producers of copper, a key component in smartphones and other technology.Zambian President Hakainde Hichilema called for help from experts and said the leak is a crisis that threatens people and wildlife along the Kafue, which runs for more than 1,500 kilometers (930 miles) through the heart of Zambia. Authorities are still investigating the extent of the environmental damage.An Associated Press reporter visited parts of the Kafue River, where dead fish could be seen washing up on the banks about 100 kilometers (60 miles) downstream from the mine run by Sino-Metals Leach Zambia, which is majority owned by the state-run China Nonferrous Metals Industry Group.The Ministry of Water Development and Sanitation said the "devastating consequences" also included the destruction of crops along the river's banks. Authorities are concerned that ground water will be contaminated as the mining waste seeps into the earth or is carried to other areas.“Prior to the 18th of February this was a vibrant and alive river,” said Sean Cornelius, who lives near the Kafue and said fish died and birdlife near him disappeared almost immediately. “Now everything is dead, it's like a totally dead river. Unbelievable. Overnight, this river died.”About 60% of Zambia's 20 million people live in the Kafue River basin and depend on it in some way as a source of fishing, irrigation for agriculture and water for industry. The river supplies drinking water to about five million people, including in the capital, Lusaka.The acid leak at the mine caused a complete shutdown of the water supply to the nearby city of Kitwe, home to an estimated 700,000 people. Attempts to roll back the damage The Zambian government has deployed the air force to drop hundreds of tons of lime into the river in an attempt to counteract the acid and roll back the damage. Speed boats have also been used to ride up and down the river, applying lime. Government spokesperson Cornelius Mweetwa said the situation was very serious and Sino-Metals Leach Zambia would bear the costs of the cleanup operation.Zhang Peiwen, the chairman of Sino-Metals Leach Zambia, met with government ministers this week and apologized for the acid spill, according to a transcript of his speech at the meeting released by his company. “This disaster has rung a big alarm for Sino-Metals Leach and the mining industry,” he said. He said it “will go all out to restore the affected environment as quickly as possible." Discontent with Chinese presence The environmental impact of China's large mining interests in mineral-rich parts of Africa, which include Zambia's neighbors Congo and Zimbabwe, has often been criticized, even as the minerals are crucial to the countries' economies. Chinese-owned copper mines have been accused of ignoring safety, labor and other regulations in Zambia as they strive to control its supply of the critical mineral, leading to some discontent with their presence. Zambia is also burdened with more than $4 billion in debt to China and had to restructure some of its loans from China and other nations after defaulting on repayments in 2020.A smaller acid waste leak from another Chinese-owned mine in Zambia's copper belt was discovered days after the Sino-Metals accident, and authorities have accused the smaller mine of attempting to hide it.Local police said a mine worker died at that second mine after falling into acid and alleged that the mine continued to operate after being instructed to stop its operations by authorities. Two Chinese mine managers have been arrested, police said.Both mines have now halted their operations after orders from Zambian authorities, while many Zambians are angry.“It really just brings out the negligence that some investors actually have when it comes to environmental protection,” said Mweene Himwinga, an environmental engineer who attended the meeting involving Zhang, government ministers, and others. “They don’t seem to have any concern at all, any regard at all. And I think it’s really worrying because at the end of the day, we as Zambian people, (it's) the only land we have.”Zimba reported from Lusaka, Zambia.Copyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See - Feb. 2025

Authorities and environmentalists in Zambia fear the long-term impact of an acid spill at a Chinese-owned mine that poisoned a major river and could potentially affect millions of people after signs of pollution were detected at least 100 kilometers downstream

KITWE, Zambia (AP) — Authorities and environmentalists in Zambia fear the long-term impact of an acid spill at a Chinese-owned mine that contaminated a major river and could potentially affect millions of people after signs of pollution were detected at least 100 kilometers (60 miles) downstream.

The spill happened on Feb. 18 when a tailings dam that holds acidic waste from a copper mine in the north of the country collapsed, according to investigators from the Engineering Institution of Zambia.

The collapse allowed some 50 million liters of waste containing concentrated acid, dissolved solids and heavy metals to flow into a stream that links to the Kafue River, Zambia’s most important waterway, the engineering institution said.

“It is an environmental disaster really of catastrophic consequences,” said Chilekwa Mumba, an environmental activist who works in Zambia's Copperbelt Province.

China is the dominant player in copper mining in Zambia, a southern African nation which is among the world’s top 10 producers of copper, a key component in smartphones and other technology.

Zambian President Hakainde Hichilema called for help from experts and said the leak is a crisis that threatens people and wildlife along the Kafue, which runs for more than 1,500 kilometers (930 miles) through the heart of Zambia.

Authorities are still investigating the extent of the environmental damage.

An Associated Press reporter visited parts of the Kafue River, where dead fish could be seen washing up on the banks about 100 kilometers (60 miles) downstream from the mine run by Sino-Metals Leach Zambia, which is majority owned by the state-run China Nonferrous Metals Industry Group.

The Ministry of Water Development and Sanitation said the "devastating consequences" also included the destruction of crops along the river's banks. Authorities are concerned that ground water will be contaminated as the mining waste seeps into the earth or is carried to other areas.

“Prior to the 18th of February this was a vibrant and alive river,” said Sean Cornelius, who lives near the Kafue and said fish died and birdlife near him disappeared almost immediately. “Now everything is dead, it's like a totally dead river. Unbelievable. Overnight, this river died.”

About 60% of Zambia's 20 million people live in the Kafue River basin and depend on it in some way as a source of fishing, irrigation for agriculture and water for industry. The river supplies drinking water to about five million people, including in the capital, Lusaka.

The acid leak at the mine caused a complete shutdown of the water supply to the nearby city of Kitwe, home to an estimated 700,000 people.

Attempts to roll back the damage

The Zambian government has deployed the air force to drop hundreds of tons of lime into the river in an attempt to counteract the acid and roll back the damage. Speed boats have also been used to ride up and down the river, applying lime.

Government spokesperson Cornelius Mweetwa said the situation was very serious and Sino-Metals Leach Zambia would bear the costs of the cleanup operation.

Zhang Peiwen, the chairman of Sino-Metals Leach Zambia, met with government ministers this week and apologized for the acid spill, according to a transcript of his speech at the meeting released by his company.

“This disaster has rung a big alarm for Sino-Metals Leach and the mining industry,” he said. He said it “will go all out to restore the affected environment as quickly as possible."

Discontent with Chinese presence

The environmental impact of China's large mining interests in mineral-rich parts of Africa, which include Zambia's neighbors Congo and Zimbabwe, has often been criticized, even as the minerals are crucial to the countries' economies.

Chinese-owned copper mines have been accused of ignoring safety, labor and other regulations in Zambia as they strive to control its supply of the critical mineral, leading to some discontent with their presence. Zambia is also burdened with more than $4 billion in debt to China and had to restructure some of its loans from China and other nations after defaulting on repayments in 2020.

A smaller acid waste leak from another Chinese-owned mine in Zambia's copper belt was discovered days after the Sino-Metals accident, and authorities have accused the smaller mine of attempting to hide it.

Local police said a mine worker died at that second mine after falling into acid and alleged that the mine continued to operate after being instructed to stop its operations by authorities. Two Chinese mine managers have been arrested, police said.

Both mines have now halted their operations after orders from Zambian authorities, while many Zambians are angry.

“It really just brings out the negligence that some investors actually have when it comes to environmental protection,” said Mweene Himwinga, an environmental engineer who attended the meeting involving Zhang, government ministers, and others. “They don’t seem to have any concern at all, any regard at all. And I think it’s really worrying because at the end of the day, we as Zambian people, (it's) the only land we have.”

Zimba reported from Lusaka, Zambia.

Copyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Photos You Should See - Feb. 2025

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The U.S. is committed to cleaning up Tijuana River pollution. Will California follow through?

San Diego leaders are calling on California to take stronger action to address the ongoing environmental crisis caused by sewage and industrial pollution flowing from the Tijuana River.

In summary San Diego leaders are calling on California to take stronger action to address the ongoing environmental crisis caused by sewage and industrial pollution flowing from the Tijuana River. As Tijuana River sewage has contaminated neighborhoods in southern San Diego County, the federal government has pledged two-thirds of a billion to clean it up.  Now local lawmakers are calling on California to step up the fight against cross-border pollution, and one introduced a bill this week to revisit air quality standards for noxious gas from the river. State Sen. Catherine Blakespear held a joint hearing of the Senate Environmental Quality Committee and the Assembly Environmental Safety and Toxic Materials Committee in San Diego Thursday to explore how the state can help solve the problem. “California has long been a national leader in environmental stewardship and policy making,” Blakespear said at the hearing. “But what is happening in the Tijuana River Valley is an international environmental disaster that undermines everything that California stands for.” The hearing at Scripps Institution of Oceanography in La Jolla, convened scientists and civic leaders to discuss how failed infrastructure, industrial waste and decades of neglect created the environmental disaster, and what it will take to fix it. “Due to its international nature, we know the federal government must take the lead,” Blakespear said. “Still, there is much that the state and local governments can do.” After decades of stalemate, action on Tijuana River pollution is speeding up. The U.S. Environmental Protection Agency on Monday announced a new agreement with Mexico to plan for wastewater infrastructure to accommodate future population growth in Tijuana. On Wednesday State Sen. Steve Padilla introduced a bill to update state standards for hydrogen sulfide, a noxious gas with a rotten egg smell that’s produced by sewage in the river. Residents in the area complain of headaches, nausea and other ailments when hydrogen sulfide reaches high concentrations. The bill would require the California Air Resources Board to review the half-century-old standard and tighten it if needed. State Lawmakers also aim to improve conditions for lifeguards and other workers exposed to pollution, and hold American companies accountable for their role in contamination of the river. County officials will conduct an extensive health study to measure effects of Tijuana River pollution, and are making plans to remove a pollution hot spot in Imperial Beach. Ongoing, chronic pollution Sewage spills in south San Diego County became common in the early 2000s, sickening swimmers and surfers at local beaches. Then the aging wastewater plants failed, sending hundreds of millions of gallons of raw sewage into the ocean. Last year Scripps researchers found that the river is harming nearby communities by releasing airborne chemicals including hydrogen sulfide gas, which smells like rotten eggs. “The sewage flowing into San Diego County’s Coastline is poisoning our air and water, harming public health, closing beaches, and killing marine life,” Blakespear said.  San Diego officials have successfully lobbied for federal investment to upgrade aging wastewater treatment plants. They also introduced faster water quality testing and surveyed residents to understand health issues.  Paula Stigler Granados, a professor of public health at San Diego State University, said studies of people living near the Tijuana River found “more scary stuff,”  with 45% experiencing health problems, 63% saying pollution disrupted their work or school and 94% of respondents reporting sewage smells at home.  “Children are waking up sick in the middle of the night,” she said. “This is an ongoing, chronic exposure, not a one-time event.” A section of the Tijuana River next to Saturn Boulevard in San Diego on Nov. 21, 2025. Photo by Adriana Heldiz, CalMatters Water samples revealed industrial chemicals, methamphetamine, fentanyl, restricted pesticides, pharmaceuticals and odor-causing sulfur compounds, she said. “This is absolutely a public health emergency,” Stigler Granados said. “I do think it is the biggest environmental crisis we have in the country right now.” That sense of urgency isn’t universal. Last year Gov. Gavin Newsom declined requests by San Diego officials to declare a state of emergency over the border pollution problem, saying it “would have meant nothing.” Over the last two years State Sen. Steve Padilla has introduced legislation to fund improvements to wastewater treatment, limit landfill construction in the Tijuana River Valley and require California companies to report waste discharges that affect water quality in the state, but those bills failed. He said the problem is overlooked in this border area, with its low-income and working class population. “This is one of the most unique and acute environmental crises in all of North America,” Padilla said. “It is underappreciated simply because of where it is occurring.”  Tijuana River solutions This year the U.S. repaired the failing South Bay International Wastewater Treatment Plant and expanded its capacity from 25 million to 35 million gallons of wastewater per day. In April, Mexico repaired its Punta Bandera plant near the border, reducing sewage flows into the ocean. But the Imperial Beach shoreline has remained closed for three years, and residents still complain of headaches, nausea, eye irritation and respiratory ailments from airborne pollution. That problem is worst at a point known as the Saturn Blvd. hot spot in Imperial Beach, where flood control culverts churn sewage-tainted water into foam, spraying contaminants into the air. “When the water is polluted you can close the beach,” said Kim Prather, an atmospheric chemist at Scripps, who identified the airborne toxins. “But you can’t tell people not to breathe.” Community members feel forgotten by state leaders as they face chronic air pollution and years of closed beaches because of contaminated wastewater from the Tijuana River, said Serge Dedina, executive director of the environmental organization WildCoast and former Imperial Beach mayor. “What they say is ‘how come California doesn’t care about us?’” Dedina said. As federal authorities plan expansions to the South Bay International Wastewater Treatment Plant that will boost its capacity to 50 million gallons per day, local and state leaders have their own action plan. A top priority for Aguirre is removing culverts at the Saturn Blvd. hot spot that cause airborne pollution. “That’s low hanging fruit that we don’t need to depend on the federal government to fix,” Aguirre said. She hopes to get funding for that project from Proposition 4, the state environmental bond that voters passed earlier this year. It dedicates $50 million to cleaning up degraded waterways, including the Tijuana River and New River, which flows into the Salton Sea.  The county is also planning a health study that would include physiological measurements to determine the health effects of Tijuana River pollution. “What we’re working on is how are we going to take real, hard medical data and follow a cohort of people who live in this environment, so we can understand what is happening in their bodies,” Aguirre said. “What is happening to children and seniors? What is in their bloodstreams?” San Diego County has distributed about 10,000 home air purifiers to households near the Tijuana River, but Aguirre wants to provide devices to all 40,000 homes in the affected area. Dedina said his organization is removing waste tires that are exported to Mexico and wash back into the Tijuana River Valley. “My lesson here is we need to stop the sediment, the tires, the trash, the toxic waste, the sewage,” he said. In addition to his bill updating hydrogen sulfide standards, Padilla said he’s exploring legislation to regulate pollution created by California companies operating through maquiladoras in Mexico. He wants to work with Mexico “to put some pressure on them to basically clamp down on American companies that are licensed to do business here in California. Blakespear said she wants to protect lifeguards and other public workers exposed to pollution. Whether the solution is creating environmental standards for international businesses or funding costly infrastructure, lawmakers acknowledge that the binational nature of the problem makes it tough to solve. “The complexity around it being an international issue and being a federal issue has added to the difficulties about who should act,” Blakespear said.

Air Pollution Linked To Autoimmune Diseases Like Lupus, Arthritis, Experts Say

By Dennis Thompson HealthDay ReporterWEDNESDAY, Dec. 17, 2025 (HealthDay News) — Air pollution might play a role in people’s risk for developing...

By Dennis Thompson HealthDay ReporterWEDNESDAY, Dec. 17, 2025 (HealthDay News) — Air pollution might play a role in people’s risk for developing autoimmune diseases like lupus and rheumatoid arthritis, a new study says.People exposed to particle air pollution had higher levels of anti-nuclear antibodies, a characteristic marker of autoimmune rheumatic diseases, researchers recently reported in the journal Rheumatology.“These results point us in a new direction for understanding how air pollution might trigger immune system changes that are associated with autoimmune disease,” senior researcher Dr. Sasha Bernatsky, a professor of medicine at McGill University in Canada, said in a news release.For the study, researchers collected blood samples from more than 3,500 people living in Canada’s Ontario region, looking at their levels of anti-nuclear antibodies.Anti-nuclear antibodies are produced by the immune system as part of an autoimmune disease. These antibodies mistakenly target the body’s own cells and tissues.The team compared those blood test results to people’s average exposure to particle pollution, based on air pollution tracking data for their home address.People with the highest levels of exposure to air pollution were 46% to 54% more likely to have high levels of anti-nuclear antibodies, the study found.Fine particle pollution involves particles that are 2.5 microns wide or smaller, according to the U.S. Environmental Protection Agency. By comparison, a human hair is 50 to 70 microns wide.“These fine particles in air pollution are small enough to reach the bloodstream, potentially affecting the whole body,” Bernatsky said.She stressed that such pollution is not just a problem for big cities.“Air pollution is often seen as an urban problem caused by traffic, but rural and suburban areas experience poor air quality too,” Bernatsky said, pointing to wildfires that choke the sky with smoke.The results underscore why standards to reduce air pollution are important, she concluded.“Even though air quality is overall better in Canada than in many other countries, research suggests there is no safe level, which is why Canadian policymakers need research like ours,” Bernatsky said.SOURCES: McGill University, news release, Dec. 15, 2025; Rheumatology, Oct. 22, 2025Copyright © 2025 HealthDay. All rights reserved.

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