What's in your tap water, and which filter fixes it
Enter your address. We look up your water utility's EPA records for PFAS, lead and violations, then match you with a filter that handles what's actually there.
Free. We don't store your address.
Source: EPA UCMR 5 occurrence data, sampling 2023–2025.
Find the right filter for the problem
- Best filter for PFAS
- Best filter for lead
- Best filter for nitrate
- Best filter for arsenic
- Best filter for well water
- Best filter for chlorine taste
Tap water quality by state
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
- Puerto Rico
Questions
Where does the water quality data come from?
From US EPA public records: the UCMR 5 nationwide PFAS testing program, the Safe Drinking Water Information System (violations and lead sampling), and EPA's map of water system service areas. Addresses are located with the US Census geocoder.
Is my tap water safe to drink?
Most US tap water meets federal standards. But standards change (EPA added PFAS limits in 2024), utilities have violations, and lead from home plumbing isn't reflected in utility data. Enter your address to see your utility's record.
What type of water filter do I need?
It depends on what's in your water. Carbon filters handle chlorine taste and, if certified, lead. PFAS, nitrate and arsenic need reverse osmosis. Private wells should be lab tested first.
Do you store my address?
No. Your address is sent to the Census geocoder to find your location, then discarded.