Research and news

Learn more about the tap water database and water contamination by viewing the EWG materials and news articles below.

EWG's Tap Water Research

PFAS in Northern Virginia

Toxic beaches

The PFAS and the furious

The high cost of algae blooms

U.S. drinking water infrastructure needs investment

Cumulative cancer risk of U.S. tap water

PFAS contamination in Californian tap water

Nitrate in tap water

Cancer risk in Californian tap water

Iowa’s private wells contaminated by nitrate and bacteria

Explosion of unregulated factory farms along the Maumee watershed

Mapping PFAS chemical contamination at 106 U.S. military sites

Pollution from poultry factory farms grows in North Carolina

Atrazine taints drinking water for millions

Americas nitrate habit Is costly and dangerous

TCE pollutes tap water supplies for 14 million Americans

Across U.S., toxic blooms pollute lakes

Update: Mapping the expanding PFAS crisis

Case study: Corn Belt communities plagued by nitrate in tap water

170 million in U.S. drink radioactive tap water

Case study: Iowa cities struggle to keep farm pollution out of tap water

Trouble in farm country: Ag runoff fouls tap water across rural America

Hidden carcinogen taints tap water, consumer product nationwide

Introducing EWG Standards: Benchmarks to protect public health

Drinking water and children's health

Mapping a contaminations crisis: PFCs pollute tap water for 15 million people

Cancer-causing pesticide 'garbage' taints tap Water for millions in California