What's in your drinking water?
MyTapWater.us is a free lookup that shows what regulators have actually measured in your local drinking water and whether your service line is lead, or might be. We aggregate EPA SDWIS data, UCMR sampling, and state-by-state lead service line inventories into one place.
Coverage is rolling out state by state. North Carolina is live now.
Browse by city
North Carolina's largest cities. Each page lists every community water system based there.
Contaminant guides
Hand-authored explainers of what's in U.S. drinking water.
- PFAS in drinking water (PFOA, PFOS, PFHxS, GenX, and the 24 unregulated UCMR 5 PFAS)
More guides are in review. See our methodology for how we source and verify every number on the site.