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water pollution

The Colorado River winds through canyons near Page, Ariz.
Posted inNews

Endangered Rivers Plagued by Pollution, Climate Change, and Outdated Management

by Jennifer Schmidt 19 April 202219 April 2022

The annual list of America’s Most Endangered Rivers includes practical calls to action to turn the tide on threatened U.S. waterways.

Imagen aérea de un vecindario en Texas inundado. Se observan sólo los techos de las casas y las copas de los árboles.
Posted inNews

Cuando los ríos están contaminados, las inundaciones son solamente el primer problema

by J. Besl 24 March 202227 March 2023

A medida que las inundaciones aumentan en frecuencia e intensidad, los productos químicos enterrados en los sedimentos de los ríos se convierten en “bombas de tiempo” que esperan activarse.

A chat, or waste, pile near the Tar Creek Superfund site in Oklahoma.
Posted inNews

Community Input Drives Superfund Research

by Robin Donovan 14 December 202125 October 2022

Researchers identified geochemical tracers for lead and investigated Oklahomans’ concerns at the Tar Creek Superfund site.

Canoers paddle along the Anacostia near Kenilworth Park in Washington, D.C.
Posted inFeatures

The Capital’s Waterways Could Be Swimmable by 2030

Mark Betancourt, Freelance Journalist by Mark Betancourt 22 November 202124 November 2021

Scientists, community groups, and the Clean Water Act are behind Washington, D.C.’s massive project to reduce combined sewer overflows by 96%.

A satellite image of a bright green algae bloom in the dark blue waters of Lake Erie
Posted inResearch Spotlights

Cyanobacteria Blooms Exceed WHO Thresholds in Midwest Lakes

by Rebecca Dzombak 16 November 20216 June 2022

A study of 369 lakes across the Midwest finds that many of them, especially those close to agriculture, have high concentrations of harmful algal bloom-causing cyanobacteria.

A stream in autumn with trees and vegetation along both banks, with an old barn and agricultural fields in the background.
Posted inNews

Scientists Call for Policies to Buffer Agricultural Runoff

by Jady Carmichael 22 October 202129 March 2023

By reviewing 44 studies, researchers make a scientific case for regulating agricultural pollution of streams and rivers by implementing conservation practices, including riparian buffer zones.

Water samples collected from Gwynns Falls stream in Baltimore
Posted inNews

Leaky Pipes Are Dosing Baltimore’s Waterways with Drugs

Richard Sima, freelance science writer by Richard J. Sima 22 October 202129 March 2023

Poor infrastructure is responsible for tens of thousands of pharmaceutical doses that flow through Baltimore’s streams each year.

This junction in Colorado’s Snake River is tinged with orange due to acid rock drainage.
Posted inNews

New Contamination Concern for Colorado Streams

by Nancy Averett 14 October 202129 March 2023

Abandoned hardrock mines and climate change cause metals and other elements to leach into streams. They also put rare earth elements into the water, a new study finds.

A young man pulls water from a well in an agricultural area in India.
Posted inNews

Researchers Trace Threats to Groundwater in India

by T. V. Padma 8 October 20219 May 2022

A handful of new studies analyze the depletion and contamination of groundwater, as well as the effects of climate change—and how communities are responding.

Floodwaters fill the streets of Port Arthur, Texas, after Hurricane Harvey in 2017.
Posted inNews

When Rivers Are Contaminated, Floods Are Only the First Problem

by J. Besl 10 September 202129 March 2023

As floods increase in frequency and intensity, chemicals buried in river sediments become “ticking time bombs” waiting to activate.

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A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

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Research Spotlights

Orbiter Pair Expands View of Martian Ionosphere

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Editors' Highlights

Coupled Isotopes Reveal Sedimentary Sources of Rare Metal Granites

17 June 202516 June 2025
Editors' Vox

Inside Volcanic Clouds: Where Tephra Goes and Why It Matters

16 June 202512 June 2025
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