City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11641
Tenaha
County, TX
0 F
#11642 Thomson
County, GA
0 F
#11643 Tidioute
County, PA
0 F
#11644 Timberon
County, NM
0 F
#11645 Tombstone
County, AZ
0 F
#11646 Tonalea
County, NM
0 F
#11647 Tooele
County, UT
0 F
#11648 Transylvania
County, LA
0 F
#11649 Trenton
County, NJ
0 F
#11650 Trinidad
County, TX
0 F
#11651 Truth Or Consequences
County, NM
0 F
#11652 Tularosa
County, NM
0 F
#11653 Tupper Lake
County, NY
0 F
#11654 Unalaska
County, AK
0 F
#11655 Valdez
County, AK
0 F
#11656 Van Wert
County, OH
0 F
#11657 Vidor
County, TX
0 F
#11658 Vineland
County, NJ
0 F
#11659 Wainwright
County, OK
0 F
#11660 Wallace
County, NC
0 F
#11661 Wallingford
County, CT
0 F
#11662 Walnut Cove
County, NC
0 F
#11663 War
County, WV
0 F
#11664 Warm Springs
County, OR
0 F
Frequently Asked Questions
How are city water quality rankings calculated?
WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.
Can I compare two US cities directly?
Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.
How often does WaterQ refresh city data?
City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.