Fires Prompt Water Advisories for Some in the L.A. Area

The devastating wildfires have raised concerns about the safety of the water supply in some places. Here’s a list of the warnings and instructions for residents.

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‘Forever Chemicals’ Reach Tap Water via Treated Sewage, Study Finds

Wastewater, even after treatment to make it drinkable, contains high levels of PFAS, according to researchers.

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What to Know About Gaza’s Humanitarian Crisis Amid Cease-Fire Push

Human rights organizations and residents describe the situation in the enclave as getting more desperate. Here is a closer look.

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The Benefits and Risks of Fluoride, Explained

Robert F. Kennedy Jr. has said he wants to curb water fluoridation nationwide. Here’s what the science shows about the benefits and the risks.

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E.P.A. Bans Perc and T.C.E., Two Chemicals Used In Dry Cleaning

The two solvents, known as Perc and TCE, cause kidney cancer and other ailments, and have been the subject of years of controversy.

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E.P.A. Again Seeks Limits on a Harmful Pesticide

After a court overturned a ban, the agency has proposed restricting chlorpyrifos to 11 food crops, illustrating the limits of federal regulation.

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Trump Promises Clean Water. Will He Clean Up PFAS?

Public health advocates worry that Donald Trump could unravel federal clean water efforts, including restrictions on lead pipes and chemicals known as PFAS.

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World Seeks an End to Plastic Pollution at Talks in South Korea

Many nations hope to reduce the half a billion tons of plastic made each year. But pushback from plastic and oil producers, and Donald Trump’s election, could scuttle an agreement.

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