Lookup tool
Check your tap water
Enter a ZIP code. We match it to the water systems that reported serving it to the U.S. Environmental Protection Agency (EPA), then show that system’s readings.
Short answer
We cover 40 US water systems, matched to the ZIP codes each one reported serving in the U.S. Environmental Protection Agency’s (EPA’s) UCMR 5 (EPA’s national testing program) testing. A ZIP can be served by more than one system, so check the utility name on your water bill. If we don’t cover your area yet, your utility’s annual water quality report has the same readings.
EPA UCMR 5 ZIP file, EPA SDWIS, utility water quality reports · Sources and method
City of Phoenix Water Services
Phoenix tap water: lithium up to 160 µg/L
Las Vegas Valley Water District
Las Vegas tap water: very hard water, lithium up to 43 µg/L
Minneapolis Water
Minneapolis tap water: moderately hard water, no PFOA or PFOS found
Chicago Department of Water Management
Chicago tap water: no PFOA or PFOS found
Houston Water
Houston tap water: hard water, lithium up to 34 µg/L
Atlanta Department of Watershed Management
Atlanta tap water: no PFOA or PFOS found
Denver Water
Denver tap water: moderately hard water, no PFOA or PFOS found
Tampa Water Department
Tampa tap water: very hard water, PFOS samples up to 6.9 ppt (EPA limit 4)
Philadelphia Water Department
Philadelphia tap water: hard water, PFOA samples up to 8.1 ppt (EPA limit 4)
Seattle Public Utilities
Seattle tap water: soft water, no PFOA or PFOS found
New York City Department of Environmental Protection
New York tap water: soft water, no PFOA or PFOS found
Free chlorine
Carbon filters remove it
New York City Department of Environmental Protection
Los Angeles Department of Water and Power
Los Angeles tap water: hard water, lithium up to 100 µg/L
San Antonio Water System
San Antonio tap water: very hard water, lithium up to 26 µg/L
Miami-Dade Water and Sewer Department
Miami tap water: PFOS samples up to 33.0 ppt (EPA limit 4)
Baltimore City Department of Public Works
Baltimore tap water: moderately hard water, no PFOA or PFOS found
City of San Diego Public Utilities
San Diego tap water: very hard water, lithium up to 65 µg/L
Dallas Water Utilities
Dallas tap water: hard water, PFOA samples up to 6.3 ppt (EPA limit 4)
Columbus Water & Power
Columbus tap water: moderately hard water, PFOA samples up to 5.3 ppt (EPA limit 4)
Cleveland Water
Cleveland tap water: moderately hard water, no PFOA or PFOS found
Charlotte Water
Charlotte tap water: soft water, no PFOA or PFOS found
Austin Water
Austin tap water: moderately hard water, PFOS samples up to 4.8 ppt (EPA limit 4)
San Jose Water
San Jose tap water: hard water, PFOS samples up to 6.2 ppt (EPA limit 4)
Fort Worth Water
Fort Worth tap water: hard water, PFOA samples up to 8.3 ppt (EPA limit 4)
Citizens Energy Group
Indianapolis tap water: very hard water, no PFOA or PFOS found
San Francisco Public Utilities Commission
San Francisco tap water: moderately hard water, no PFOA or PFOS found
JEA
Jacksonville tap water: very hard water, no PFOA or PFOS found
Louisville Water
Louisville tap water: hard water, PFOA samples up to 7.5 ppt (EPA limit 4)
Greater Cincinnati Water Works
Cincinnati tap water: hard water, PFOS samples up to 6.1 ppt (EPA limit 4)
Metro Water Services
Nashville tap water: moderately hard water, no PFOA or PFOS found
El Paso Water
El Paso tap water: hard water, PFOS samples up to 8.5 ppt (EPA limit 4)
Tucson Water
Tucson tap water: lithium up to 64 µg/L
Boston Water and Sewer Commission
Boston tap water: soft water, no PFOA or PFOS found
Portland Water Bureau
Portland tap water: soft water, no PFOA or PFOS found
Memphis Light, Gas and Water
Memphis tap water: soft water, no PFOA or PFOS found
Oklahoma City Water Utilities Trust
Oklahoma City tap water: lithium up to 68 µg/L
Detroit Water and Sewerage Department
Detroit tap water: moderately hard water, no PFOA or PFOS found
DC Water
Washington tap water: hard water, no PFOA or PFOS found
Milwaukee Water Works
Milwaukee tap water: hard water, no PFOA or PFOS found
Albuquerque Bernalillo County Water Utility Authority
Albuquerque tap water: hard water, lithium up to 71 µg/L
Free chlorine
Carbon filters remove it
Albuquerque Bernalillo County Water Utility Authority
KC Water