City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4537
Las Cruces
County, NM
91 A
#4538 Lawrence
County, KS
91 A
#4539 Leoti
County, KS
91 A
#4540 Lesueur
County, MN
91 A
#4541 Livingston
County, LA
91 A
#4542 Longview
County, WA
91 A
#4543 Los Banos
County, CA
91 A
#4544 Lyndonville
County, VT
91 A
#4545 Madison
County, NE
91 A
#4546 Madisonville
County, TX
91 A
#4547 Manning
County, SC
91 A
#4548 Manton
County, MI
91 A
#4549 Marathon City
County, WI
91 A
#4550 Marlboro
County, NJ
91 A
#4551 Mcarthur
County, OH
91 A
#4552 Mcbee
County, SC
91 A
#4553 Mcfarland
County, CA
91 A
#4554 Medina
County, OH
91 A
#4555 Milford
County, MI
91 A
#4556 Mingo Junction
County, OH
91 A
#4557 Mitchell
County, SD
91 A
#4558 Moberly
County, MO
91 A
#4559 Monmouth
County, OR
91 A
#4560 Montevallo
County, AL
91 A
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.