City Water Quality Rankings in Missouri
335 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#193
Advance
County, MO
82 B
#194 Billings
County, MO
82 B
#195 Hillsboro
County, MO
82 B
#196 Houston
County, MO
82 B
#197 Marshall
County, MO
82 B
#198 O Fallon
County, MO
82 B
#199 Odessa
County, MO
82 B
#200 Philadelphia
County, MO
82 B
#201 Sikeston
County, MO
82 B
#202 Brunswick
County, MO
81 B
#203 Franklin
County, MO
81 B
#204 Hayti
County, MO
81 B
#205 Laddonia
County, MO
81 B
#206 Macon
County, MO
81 B
#207 Qulin
County, MO
81 B
#208 Wellsville
County, MO
81 B
#209 Alton
County, MO
80 B
#210 California
County, MO
80 B
#211 Cole Camp
County, MO
80 B
#212 El Dorado Springs
County, MO
80 B
#213 Elsberry
County, MO
80 B
#214 Lebanon
County, MO
80 B
#215 Salem
County, MO
80 B
#216 Sheldon
County, MO
80 B
Frequently Asked Questions
How are city water quality rankings calculated in Missouri?
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 Missouri?
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.