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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 952,495 residents
Duval County in Florida has an average water quality score of 49/100 (Grade F) based on analysis of 1 municipal water systems. The county's water systems serve approximately 952,495 residents.
Duval County shows below-average water quality scores that warrant attention. 1 of 1 cities have concerning water quality scores. Residents in affected areas should consider water filtration options. Jacksonville has the best water quality in the county at 49/100.
1 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Jacksonville Top concern: Total Trihalomethanes (46.6% of limit) | 49 | F | 952,495 |
Top detected contaminants across county water systems
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| Total Trihalomethanes | 37.283 ug/L | 37.283 ug/L | 80 ug/L | 46.6% | 1 |
| Nitrate | 4.657 mg/L | 4.657 mg/L | 10 mg/L | 46.6% | 1 |
| Lead | 0.005 mg/L | 0.005 mg/L | 0.015 mg/L | 34.7% | 1 |
| Fluoride | 1.342 mg/L | 1.342 mg/L | 4 mg/L | 33.5% | 1 |
| Arsenic | 0.003 mg/L | 0.003 mg/L | 0.01 mg/L | 32% | 1 |
| Chromium | 0.031 mg/L | 0.031 mg/L | 0.1 mg/L | 30.7% | 1 |
| Haloacetic Acids | 15.45 ug/L | 15.45 ug/L | 60 ug/L | 25.8% | 1 |
| Nitrite | 0.15 mg/L | 0.15 mg/L | 1 mg/L | 15% | 1 |
Recent violations across county water systems
Water quality in Duval County, Florida 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 952,495 residents.
The county shows variable water quality performance, with scores ranging from 49/100 in Jacksonville to 49/100 in Jacksonville. This 0-point spread indicates relatively consistent water quality standards across municipal systems.
The most prevalent contaminants detected across Duval County water systems include Total Trihalomethanes, Nitrate, Lead. All monitored contaminants remain within acceptable levels relative to EPA Maximum Contaminant Levels (MCLs).
Given the water quality challenges in Duval County, we recommend that residents invest in water filtration systems. Reverse osmosis systems provide the most comprehensive protection, though activated carbon filters can address many common contaminants. Review your city's specific contaminant profile to select appropriate filtration.
Duval County has an average water quality score of 49/100 (Grade F) based on analysis of 1 municipal water systems serving 952,495 residents.
Jacksonville has the highest water quality score in Duval County at 49/100. View the detailed report for Jacksonville.
Given the water quality variation across Duval County, we recommend reviewing your specific city's water quality report. 1 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.