USGS groundwater water pollution contamination 2011 report arsenic manganese radon uranium

USGS Report: Trace Elements Exceed Health Standards in 20 Percent of U.S. Water Wells

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Utilities are required by law to treat water to national standards, but no such controls exist for private wells, where the risk from contaminants is greater.
Infographic: American Arsenic

Infographic: An Elemental Concern—Arsenic in Drinking Water

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Arsenic is both naturally occurring and artificially produced, and the toxin is very dangerous since it often has no color, taste, or smell. This graphic breaks down how arsenic gets into drinking water supplies and how arsenic affects the U.S. on the state level.

American Arsenic: After a Decade, Small Communities Still Struggle to Meet Federal Drinking Water Standards

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When the EPA lowered the arsenic standard for drinking water from 50 parts per billion to 10 in 2001, there were 3,000 water systems in violation. Today, nearly a thousand still are.

Water Pollution Solution — New York Experiments with Coal Tar “Sponges” in Hudson River

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Testing new methods to remove residual coal tar from riverbeds in New York.

Study: Unregulated Toxin Present in Tap Water of 31 U.S. Cities

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California is the first state to consider a limit on the “Erin Brockovich” chemical, which has been found in 31 of 35 U.S. cities recently surveyed.

Small Solution to Large-scale Water Pollution — Protozoa Detect Contaminants

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A technology start-up is looking small to solve a big global problem.

Overdraft and Saltwater Intrusion Strain the Floridan Aquifer

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Excessive withdrawals are forcing communities from South Carolina to Florida to look elsewhere for water.

Coal Ash Contaminates Groundwater and Drinking Water Sites in 21 States, Study Finds

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The EPA must do a better job of regulating the waste and protecting the nation’s water supply.

Government Warns Against Contaminated Water in Wyoming Town

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Freshwater wells deemed unsafe because of hydrocarbons.

Q&A: Josh Fox on the ‘Toxification’ of U.S. Water Sources in the Dig for Natural Gas

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The documentary “Gasland" has shown at film festivals and on HBO.

USGS Survey Finds Contamination in Public Wells

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A new study reveals that 105 million Americans drink from contaminated wells.

Midwestern Cities Sue Chemical Company for Polluting Water Supply

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A group of Midwestern communities and water districts has filed a federal lawsuit against Swiss corporation Syngenta AG and its American subsidiary