Live EPA SDWIS data · Updated when the state reports United States & Canada · Our method →

What is in your water?

Enter your US ZIP code. We fetch your Public Water System from the EPA Safe Drinking Water Information System (SDWIS), show recent violations, and link out to the full EWG report. Live query - nothing stored on our servers.

Tip: try , , , .

See the report
How to read the resultPublic data, briefly explained.

EPA data. Know its limits.

What is a violation?

A health-based violation may involve an MCL. Monitoring or reporting violations may indicate a missing sample or report. Check the category and date.

A public report has limits.

It records utility compliance; it is not a verdict on water at your faucet. Confirm current status with the utility and its latest CCR.

If you are concerned about lead, PFAS, odor or your home's plumbing, order a laboratory water test. Use the result to choose a water filter or reverse osmosis system.

Questions about the result?

We can help at no charge.

Free consultation

We will explain the report and help narrow the appropriate water treatment system.