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pollution

With the Trump National Golf Club clubhouse in the background, Camp Calleva kayak instructor Steve McKone helps one of his campers while teaching a lesson on the Potomac River during a camp session on July 17, 2017. (Washington Post photo by Toni L. Sandys)
Apr 15, 2026

Potomac River tops list of country’s most endangered rivers

The Potomac River tops the list of most endangered rivers in the country, according to a report that cites the impacts of a recent sewage spill and data centers in the region.

Water researcher Eva Stebel pours a water sample into a smaller glass container for experimentation as part of drinking water and PFAS research at the U.S. Environmental Protection Agency Center For Environmental Solutions and Emergency Response on Feb. 16, 2023, in Cincinnati. (AP Photo/Joshua A. Bickel, File)
Nov 25, 2025

Judge rejects Gore’s bid to limit MD residents’ participation in PFAS lawsuit

A federal court allowed an Elkton couple to intervene in Maryland’s lawsuit against W.L. Gore for alleged toxic chemical releases.

A man crabbing on the Gunpowder River. (Andrea Durán/Capital News Service)
Oct 3, 2025

Residents push back against Baltimore County landfill plans to send more runoff to watershed

Pushback is growing against an effort by a landfill in Baltimore County to double the amount of leachate it discharges into two nearby rivers.

Emissions from a coal-fired power plant are silhouetted against the setting sun in Kansas City, Mo., Feb. 1, 2021. (AP File Photo/Charlie Riedel)
Sep 10, 2025

Study links frequent, severe heat waves to fossil fuel pollution

Fifty-five heat waves over the past quarter-century would not have happened without human-caused climate change, according to a new study.

A scavenger collects recyclable items including plastic from a dump site in Lahore, Pakistan, Thursday, Aug. 7, 2025. (AP Photo/K.M. Chaudary)
Aug 15, 2025

Failed plastics negotiations in Geneva highlight pollution crisis

GENEVA (AP) — Negotiations to reach a major treaty to end growing plastic pollution around the world fell apart on Friday, with delegates in Switzerland adjourning with no immediate plans […]

A Baltimore judge dismissed several key claims the city brought against several defendants allegedly involved in microplastic production.
Jul 22, 2025

Judge dismisses key claims in Baltimore microplastics lawsuit

A Baltimore judge dismissed claims against multiple defendants in the city’s lawsuit about the manufacture and sale of single-use plastics. 

David Etheridge II, a vehicle inspector, is shown during a tailpipe emission June 22, 2006, in Hillsboro, Oregon. (AP File Photo/Rick Bowmer)
Jun 4, 2025

MD to continue with emissions inspection operator after prolonged ‘procurement challenges’

Maryland plans to renew its emissions testing contract with Envirotest Corp. through 2030, ending a court battle over the state's procurement process.

Speaker of the House Mike Johnson, R-La., left, and Senate Majority Leader John Thune, R-S.D., make statements to reporters ahead of vote in the House to pass a bill on President Donald Trump's top domestic priorities of spending reductions and tax breaks, at the Capitol in Washington on April 10, 2025. (AP Photo/J. Scott Applewhite)
May 22, 2025

Senate clears way to block clean air standards in California, including vehicle emission rules

Senate Republicans voted to establish a new precedent that will allow them to roll back vehicle emission standards in California.

Jackson Quinn, foreground, places a bottle contains a PFAS water sample into a rotator on April 10, 2024, at a U.S. Environmental Protection Agency lab in Cincinnati. The EPA on Wednesday announced its first-ever limits for several common types of PFAS, the so-called "forever chemicals," in drinking water. (AP Photo/Joshua A. Bickel)
May 14, 2025

EPA announces rollback for some Biden-era limits on ‘forever chemicals’ in drinking water

The EPA said it plans to weaken limits on some so-called forever chemicals in drinking water that were finalized last year.

The logo for 3M appears on a screen above the trading floor of the New York Stock Exchange on Oct. 24, 2017. (AP Photo/Richard Drew, File)
May 14, 2025

NJ says 3M agrees to ‘forever chemical’ settlement worth up to $450M

Chemical manufacturer 3M agreed to pay up $450 million to resolve lawsuits over contamination stemming from “forever chemicals.”

A smokestack stands at a coal plant on June 22, 2022, in Delta, Utah. (AP Photo/Rick Bowmer, File)
Mar 15, 2023

EPA ‘neighbor’ rule cuts downwind pollution by power plants

A new “good neighbor” rule issued by the Environmental Protection Agency will restrict smokestack emissions from power plants and other industrial sources that burden downwind areas.

Photos: Essex wastewater treatment plant expansion
Mar 25, 2022

Maryland orders Baltimore treatment plant to stop unpermitted water pollution

Maryland environment officials are ordering the state’s largest wastewater treatment plan to stop unpermitted discharges of water pollution.