Missouri
Water Quality Report
80 Good
Average Score
80/100
Water Systems
519
Population
5.5M
Violations
4 1 unresolved
Score Distribution
2 A
0 B
0 C
1 D
0 F
Lowest Scoring Water Systems
Counties in Missouri
Cities in Missouri
View all 335 cities →Popular City Comparisons in Missouri
Quickly compare major cities in Missouri by water quality score and grade.
Frequently Asked Questions
Is tap water in Missouri safe to drink?
Missouri has an average WaterQ score of 80/100 across 519 public water systems. Safety can vary by city and system, so check your local report for recent violations and contaminants.
How many water systems are in Missouri?
WaterQ currently tracks 519 public water systems in Missouri.
Where can I compare cities in Missouri?
Use the city list below to open detailed reports, or visit the compare tool to benchmark two cities side-by-side on score, grade, and system coverage.