City Water Quality Rankings in Missouri
336 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#97
New Franklin
County, MO
91 A
#98 Poplar Bluff
County, MO
91 A
#99 Powersite
County, MO
91 A
#100 Bowling Green
County, MO
90 A
#101 Cottleville
County, MO
90 A
#102 Crocker
County, MO
90 A
#103 Mound City
County, MO
90 A
#104 Troy
County, MO
90 A
#105 Auxvasse
County, MO
89 B
#106 Cedar Hill
County, MO
89 B
#107 Desloge
County, MO
89 B
#108 Greenfield
County, MO
89 B
#109 Ozark
County, MO
89 B
#110 Willard
County, MO
89 B
#111 Bloomfield
County, MO
88 B
#112 Chillicothe
County, MO
88 B
#113 Fort Leonard Wood
County, MO
88 B
#114 Hallsville
County, MO
88 B
#115 Holt
County, MO
88 B
#116 Knob Noster
County, MO
88 B
#117 Palmyra
County, MO
88 B
#118 St Peters
County, MO
88 B
#119 Villa Ridge
County, MO
88 B
#120 Winona
County, MO
88 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.