WaterQ

City Water Quality Rankings in Missouri

336 cities ranked by drinking water quality.

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Popular city water quality comparisons

Carthage, MO vs Cosby, MO Compare → Fair Grove, MO vs Fillmore, MO Compare → Freeman, MO vs Gower, MO Compare → Kirkwood, MO vs Paris, MO Compare →

Trending Cities

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#145
Bonne Terre
County, MO
85 B
#146
Brookfield
County, MO
85 B
#147
Butler
County, MO
85 B
#148
Cameron
County, MO
85 B
#149
Dexter
County, MO
85 B
#150
Dixon
County, MO
85 B
#151
Hamilton
County, MO
85 B
#152
Harrisonville
County, MO
85 B
#153
Independence
County, MO
85 B
#154
Jefferson City
County, MO
85 B
#155
Laddonia
County, MO
85 B
#156
Marceline
County, MO
85 B
#157
New Madrid
County, MO
85 B
#158
Peculiar
County, MO
85 B
#159
Sedalia
County, MO
85 B
#160
Tipton
County, MO
85 B
#161
Winfield
County, MO
85 B
#162
Craig
County, MO
84 B
#163
Dearborn
County, MO
84 B
#164
Hillsboro
County, MO
84 B
#165
Plattsburg
County, MO
84 B
#166
St Charles
County, MO
84 B
#167
Wellsville
County, MO
84 B
#168
Willow Springs
County, MO
84 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.

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