City Water Quality Rankings in Missouri
336 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#313
Memphis
County, MO
50 D
#314 Concordia
County, MO
48 D
#315 Campbell
County, MO
47 D
#316 Clarkton
County, MO
47 D
#317 Crane
County, MO
47 D
#318 East Prairie
County, MO
47 D
#319 Sweet Springs
County, MO
47 D
#320 Worth
County, MO
47 D
#321 Slater
County, MO
42 F
#322 Macks Creek
County, MO
39 F
#323 Farmington
County, MO
37 F
#324 Loose Creek
County, MO
37 F
#325 Maryville
County, MO
35 F
#326 Malden
County, MO
32 F
#327 Oran
County, MO
31 F
#328 Eldon
County, MO
25 F
#329 Piedmont
County, MO
25 F
#330 Lampe
County, MO
4 F
#331 Archie
County, MO
3 F
#332 King City
County, MO
0 F
#333 Leadwood
County, MO
0 F
#334 Louisiana
County, MO
0 F
#335 Maysville
County, MO
0 F
#336 Monroe
County, MO
0 F
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.