City Water Quality Rankings in Colorado
186 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#169
Evergreen
County, CO
46 D
#170 Fowler
County, CO
44 F
#171 Hayden
County, CO
44 F
#172 Salida
County, CO
40 F
#173 El Jebel
County, CO
32 F
#174 Leadville
County, CO
29 F
#175 Palisade
County, CO
28 F
#176 Rangely
County, CO
27 F
#177 Conifer
County, CO
25 F
#178 Ridgway
County, CO
25 F
#179 Walsenburg
County, CO
21 F
#180 Paonia
County, CO
19 F
#181 Rifle
County, CO
2 F
#182 Colorado City
County, CO
0 F
#183 Hotchkiss
County, CO
0 F
#184 Ouray
County, CO
0 F
#185 Telluride
County, CO
0 F
#186 Wiley
County, CO
0 F
Frequently Asked Questions
How are city water quality rankings calculated in Colorado?
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 cities in Colorado?
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.