Denver, Colorado Water Quality Report
Comprehensive analysis of tap water safety based on EPA data
Last updated: January 2026
Is Denver's Water Safe to Drink?
Some Concerns. Denver's tap water has some contaminants worth monitoring. Consider a water filter for extra protection. Score: 67/100.
Contaminants Found in Denver's Water
1 contaminants tested • Data from EPA SDWIS database
| Contaminant | Level Detected | EPA Limit | % of Limit | Status |
|---|---|---|---|---|
Lead | 0.0039 mg/L | 0.015 mg/L | 26.0% | Safe |
Compliance Violations
Past EPA violations recorded for Denver's water system
other
Contaminant 0300 - 3/1/2024
Resolvedmonitoring
Combined Radium - 1/1/2024
Resolvedother
Contaminant 0300 - 9/1/2022
Resolvedother
Contaminant 0300 - 5/1/2019
Resolvedmonitoring
Contaminant 2005 - 1/1/2014
ResolvedShowing 5 of 97 violations
About Denver's Water System
DENVER WATER BOARD
- PWS ID:
- CO0116001
- Population Served:
- 1,287,000
- Water Source:
- surface
Denver Water Quality Score
Based on EPA contaminant data and compliance records
Positive Findings
- No health-based (MCL) violations
- All tested contaminants well below EPA limits
- Low lead levels detected
Protect Your Family's Water
Even with good water quality, many families choose to filter their water for extra peace of mind.
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Other Cities in Colorado
Compare water quality with nearby cities.
View all Colorado cities →Frequently Asked Questions
- Where does Denver's water come from?
- Denver primarily uses surface water sources.
- How often is Denver's water tested?
- Water utilities are required to test for contaminants regularly and report results to the EPA.
- Should I use a water filter in Denver?
- While the water meets EPA standards, many families choose filters for extra peace of mind.