City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2449
Hazel
County, KY
96 A
#2450 Heath
County, OH
96 A
#2451 Heber
County, CA
96 A
#2452 Hebron
County, OH
96 A
#2453 Henderson
County, NV
96 A
#2454 Hendersonville
County, NC
96 A
#2455 Henniker
County, NH
96 A
#2456 Henrico
County, VA
96 A
#2457 Herculaneum
County, MO
96 A
#2458 Hesston
County, KS
96 A
#2459 Hiddenite
County, NC
96 A
#2460 Highland Home
County, AL
96 A
#2461 Hillsboro
County, OH
96 A
#2462 Hilltop Lakes
County, TX
96 A
#2463 Hilton Head Island
County, SC
96 A
#2464 Hinesburg
County, VT
96 A
#2465 Hobart
County, IN
96 A
#2466 Holts Summit
County, MO
96 A
#2467 House Springs
County, MO
96 A
#2468 Hume
County, CA
96 A
#2469 Huntingdon
County, TN
96 A
#2470 Huntsville
County, MO
96 A
#2471 Huron
County, SD
96 A
#2472 Independence
County, IA
96 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.