City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1249
Lost Hills
County, CA
99 A
#1250 Manistee
County, MI
99 A
#1251 Marion
County, VA
99 A
#1252 Massena
County, NY
99 A
#1253 Middletown
County, DE
99 A
#1254 Millersport
County, OH
99 A
#1255 Moncks Corner
County, SC
99 A
#1256 Montesano
County, WA
99 A
#1257 Moose
County, WY
99 A
#1258 Moro
County, OR
99 A
#1259 Mount Orab
County, OH
99 A
#1260 Mountlake Terrace
County, WA
99 A
#1261 Navarre
County, OH
99 A
#1262 Newark
County, OH
99 A
#1263 Niskayuna
County, NY
99 A
#1264 North Bend
County, WA
99 A
#1265 Northfield
County, VT
99 A
#1266 Norwalk
County, OH
99 A
#1267 Norway
County, MI
99 A
#1268 Odenville
County, AL
99 A
#1269 Old Fields
County, WV
99 A
#1270 Oroville
County, CA
99 A
#1271 Oscoda
County, MI
99 A
#1272 Packwood
County, WA
99 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.