Drinking Water Contaminant Reference
Explore concise reference information and historical EPA compliance records. A record does not establish a current concentration at a tap; consult the latest utility report or a certified test for current conditions.
Inorganic
Arsenic
Inorganic · EPA reference and records
Barium
Inorganic · EPA reference and records
Cadmium
Inorganic · EPA reference and records
Chromium
Inorganic · EPA reference and records
Cyanide
Inorganic · EPA reference and records
Fluoride
Inorganic · EPA reference and records
Mercury
Inorganic · EPA reference and records
Lead
Inorganic · EPA reference and records
Selenium
Inorganic · EPA reference and records
Antimony
Inorganic · EPA reference and records
Nitrate
Inorganic · EPA reference and records
Nitrite
Inorganic · EPA reference and records
Thallium
Inorganic · EPA reference and records
Beryllium
Inorganic · EPA reference and records