Address lookup

Find the water system that serves your address

Enter a US street address. We match it to the public water system that serves it — using EPA service-area boundaries — and show that system’s safety record.

How the match works

We geocode your address with the US Census geocoder, then find which EPA service-area boundary contains that point. That boundary is keyed to a federal PWSID — the same ID EPA uses in its drinking-water records.

Where the data comes from

EPA SDWIS (violations & system facts), EPA UCMR5 (PFAS sampling), and the EPA/SimpleLab Community Water System service-area boundaries. All public federal data — never scraped.

What the score can’t see

The 0–100 score is system-level. It can’t account for your home’s plumbing (older pipes can add lead at the tap) or private wells. For health decisions, read your utility’s annual report (CCR) and test your tap.