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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#1
Carthage
County, MO
100 A
#2
Cosby
County, MO
100 A
#3
Fair Grove
County, MO
100 A
#4
Fillmore
County, MO
100 A
#5
Freeman
County, MO
100 A
#6
Gower
County, MO
100 A
#7
Kirkwood
County, MO
100 A
#8
Paris
County, MO
100 A
#9
Purdy
County, MO
100 A
#10
Shelbina
County, MO
100 A
#11
Shelbyville
County, MO
100 A
#12
Wright City
County, MO
100 A
#13
Garden City
County, MO
99 A
#14
Greenwood
County, MO
99 A
#15
Williamstown
County, MO
99 A
#16
Exeter
County, MO
98 A
#17
Hilsboro
County, MO
98 A
#18
Ashland
County, MO
97 A
#19
Clarksdale
County, MO
97 A
#20
Dekalb
County, MO
97 A
#21
Gladstone
County, MO
97 A
#22
Osage Beach
County, MO
97 A
#23
Polo
County, MO
97 A
#24
Queen City
County, MO
97 A

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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