Colorado
Water Quality Report
82 Good
Average Score
82/100
Water Systems
328
Population
7.0M
Violations
4 1 unresolved
Score Distribution
0 A
3 B
0 C
1 D
0 F
Top Contaminant Violations
| Contaminant | Violations |
|---|---|
| Manganese | 1 |
| Copper | 1 |
| Mercury | 1 |
| Gross Alpha Particle Activity | 1 |
| Turbidity | 1 |
Lowest Scoring Water Systems
Counties in Colorado
Cities in Colorado
View all 186 cities →Popular City Comparisons in Colorado
Quickly compare major cities in Colorado by water quality score and grade.
Frequently Asked Questions
Is tap water in Colorado safe to drink?
Colorado has an average WaterQ score of 82/100 across 328 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 Colorado?
WaterQ currently tracks 328 public water systems in Colorado.
Where can I compare cities in Colorado?
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.