Contaminants

Fact sheets, FAQs, and external resources for contaminants in drinking water.

1,4-Dioxane

Arsenic

Asbestos and PCE from Vinyl-lined Asbestos Cement pipe

Chloramines

Copper

Cryptosporidium and Giardia

Cyanobacteria

Fluoride

Haloacetic Acids (HAA5)

Lead

Manganese

Mercury

Perchlorate

Perfluorinated Substances (PFOS and PFOA)

Radionuclides

Secondary Contaminants

Sodium

Total Trihalomethanes (TTHM)

Unregulated Contaminants

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