WaterQ

City Water Quality Rankings in Missouri

335 cities ranked by drinking water quality.

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Popular city water quality comparisons

Ashland, MO vs Carthage, MO Compare → Clarksdale, MO vs Cosby, MO Compare → Dekalb, MO vs Fair Grove, MO Compare → Fillmore, MO vs Freeman, MO Compare →

Trending Cities

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#1
Ashland
County, MO
100 A
#2
Carthage
County, MO
100 A
#3
Clarksdale
County, MO
100 A
#4
Cosby
County, MO
100 A
#5
Dekalb
County, MO
100 A
#6
Fair Grove
County, MO
100 A
#7
Fillmore
County, MO
100 A
#8
Freeman
County, MO
100 A
#9
Gladstone
County, MO
100 A
#10
Gower
County, MO
100 A
#11
Kahoka
County, MO
100 A
#12
Kirkwood
County, MO
100 A
#13
Lawson
County, MO
100 A
#14
Polo
County, MO
100 A
#15
Purdy
County, MO
100 A
#16
Queen City
County, MO
100 A
#17
Shelbina
County, MO
100 A
#18
Shelbyville
County, MO
100 A
#19
Wright City
County, MO
100 A
#20
Dawn
County, MO
99 A
#21
Ewing
County, MO
99 A
#22
Garden City
County, MO
99 A
#23
Greenwood
County, MO
99 A
#24
St Joseph
County, MO
99 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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