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At EWG,
our team of scientists, engineers, policy experts, lawyers and computer programmers pores over government data, legal documents, scientific studies and our own laboratory tests to expose threats to your health and the environment, and to find solutions. Our research brings to light unsettling facts that you have a right to know.

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Drinking Water

Expert Testimony and Communications Content

Pharmaceuticals Pollute U.S. Tap Water

The Associated Press found drugs and other medical compounds in the drinking water supplies of 41 million Americans. EWG's Tap Water Database details other contaminants.

Statement of Dusty Horwitt, JD

Senior Analyst for Public Lands, Environmental Working Group

EPA Needs to Set Enforceable Standards for Currently Unregulated Drinking Water Pollutants

Statement of Olga Naidenko, Ph.D., Senior Scientist
Environmental Working Group

EWG calls for Investigation of Nursery Water

Potential False Advertising and Misleading Health Claims on Fluoride in Bottled Water That Is Marketed to Infants

EWG Letter to Harvard President Bok

EWG letter to Harvard President regarding its investigation into charges that Dr. Chester Douglass of the Harvard Medical School faculty misrepresented or suppressed the findings of federally funded research into whether fluoride in tap water is associated with bone cancer in adolescent boys.

Government Asked to Evaluate the Cancer-Causing Potential Of Fluoride in Tap Water

Citing a strong body of peer-reviewed evidence, EWG today asked the National Toxicology Program (NTP) of the National Institutes of Health (NIH) to list fluoride in tap water in its authoritative Report on Carcinogens, based on its ability to cause a rare form of childhood bone cancer, osteosarcoma, in boys.

EWG to Rep. Bass: Where Is Your Plan For MTBE Relief?

When Rep. Charles Bass (R-NH) voted in favor of lawsuit immunity for drinking water polluters