Most contaminants are invisible, odorless, and tasteless — yet they're present in millions of American homes. Here's what the data says about city and well water across the US.
Test My Water for Free300+
Contaminants found in US tap water
45M+
Americans drink from private wells
77M
People served by systems with violations
0
Contaminants you should accept
Click any contaminant to see sources, health risks, and who's most at risk.
City water is treated by your municipality, but treatment doesn't remove everything. Aging infrastructure, chemical treatment byproducts, and industrial runoff all contribute to what ends up at your tap.
Our free in-home water test checks for the contaminants that matter most. A water filtration specialist comes to you, tests on-site, and explains every result — no obligation to purchase anything.
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