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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Water quality data for 1 cities serving 717,347 residents
Denver County in Colorado has an average water quality score of 74/100 (Grade B-) based on analysis of 1 municipal water systems. The county's water systems serve approximately 717,347 residents.
Water quality in Denver County is fair, with some cities showing room for improvement. Denver has the best water quality at 74/100.
1 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Denver Top concern: Total Trihalomethanes (33.9% of limit) | 74 | B- | 717,347 |
Top detected contaminants across county water systems
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| Total Trihalomethanes | 27.101 ug/L | 27.101 ug/L | 80 ug/L | 33.9% | 1 |
| Nitrite | 0.249 mg/L | 0.249 mg/L | 1 mg/L | 24.9% | 1 |
| Mercury | 0 mg/L | 0 mg/L | 0.002 mg/L | 20% | 1 |
| Haloacetic Acids | 11.366 ug/L | 11.366 ug/L | 60 ug/L | 18.9% | 1 |
| Fluoride | 0.647 mg/L | 0.647 mg/L | 4 mg/L | 16.2% | 1 |
| Arsenic | 0.002 mg/L | 0.002 mg/L | 0.01 mg/L | 15% | 1 |
| Lead | 0.001 mg/L | 0.001 mg/L | 0.015 mg/L | 7.3% | 1 |
| Copper | 0.024 mg/L | 0.024 mg/L | 1.3 mg/L | 1.9% | 1 |
Recent violations across county water systems
Water quality in Denver County, Colorado reflects the region's unique combination of water sources, treatment infrastructure, and environmental factors. Our comprehensive analysis examines 1 municipal water systems serving a combined population of over 717,347 residents.
The county shows moderate water quality performance, with scores ranging from 74/100 in Denver to 74/100 in Denver. This 0-point spread indicates relatively consistent water quality standards across municipal systems.
The most prevalent contaminants detected across Denver County water systems include Total Trihalomethanes, Nitrite, Mercury. All monitored contaminants remain within acceptable levels relative to EPA Maximum Contaminant Levels (MCLs).
Water quality in Denver County is fair but shows room for improvement. Residents in cities scoring below 70 should consider water filtration, particularly for drinking and cooking. Check your specific city's report above for personalized recommendations.
Denver County has an average water quality score of 74/100 (Grade B-) based on analysis of 1 municipal water systems serving 717,347 residents.
Denver has the highest water quality score in Denver County at 74/100. View the detailed report for Denver.
Given the water quality variation across Denver County, we recommend reviewing your specific city's water quality report. 0 cities have scores below 70, where filtration is particularly recommended.
Click on any city in the rankings table above to view its detailed water quality report, including contaminant levels, EPA compliance history, and filter recommendations.