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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 826,664 residents
Duval County in Florida has an average water quality score of 94/100 (Grade A) based on analysis of 1 municipal water systems. The county's water systems serve approximately 826,664 residents.
Overall, Duval County demonstrates good water quality standards. 1 of 1 cities exceed the county average, with Jacksonville leading with a score of 94/100.
1 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Jacksonville Biggest deduction: Other PFAS detected in UCMR5 sampling: PFPeS 5.2 ppt, PFPeA 6.8 ppt (−4 pts) | 94 | A | 826,664 |
Real EPA readings across county water systems (lead: latest 90th percentile; PFAS: UCMR5 2023–2026; others: 2012–2019 averages)
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| TTHM (2012–2019 avg) | 59.678 ug/L | 59.678 ug/L | 80 ug/L | 74.6% | 1 |
| HAA5 (2012–2019 avg) | 18.433 ug/L | 18.433 ug/L | 60 ug/L | 30.7% | 1 |
| Fluoride (2012–2019 avg) | 0.584 mg/L | 0.584 mg/L | 4 mg/L | 14.6% | 1 |
| Lead (90th percentile) | 1.5 ppb | 1.5 ppb | 15 ppb | 10% | 1 |
| Arsenic (2012–2019 avg) | 0.047 ug/L | 0.047 ug/L | 10 ug/L | 0.5% | 1 |
| Nitrate (2012–2019 avg) | 0.046 mg/L | 0.046 mg/L | 10 mg/L | 0.5% | 1 |
| PFAS (PFOA/PFOS max, UCMR5) | 0 ppt | 0 ppt | 4 ppt | 0% | 1 |
| Uranium (2012–2019 avg) | 0.006 ug/L | 0.006 ug/L | 30 ug/L | 0% | 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 826,664 residents.
The county shows strong water quality performance, with scores ranging from 94/100 in Jacksonville to 94/100 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 TTHM (2012–2019 avg), HAA5 (2012–2019 avg), Fluoride (2012–2019 avg). At least one reading averages above 50% of its EPA limit across the county's systems, worth attention from residents and utilities.
Duval County's water quality is generally good. Residents can feel confident in their tap water quality, though those with specific health concerns or sensitivity to certain contaminants may still benefit from filtration. Regular review of your city's annual Consumer Confidence Report is recommended.
Duval County has an average water quality score of 94/100 (Grade A) based on analysis of 1 municipal water systems serving 826,664 residents.
Jacksonville has the highest water quality score in Duval County at 94/100. View the detailed report for Jacksonville.
Most cities in Duval County have water that meets EPA standards. However, a water filter can provide additional protection and improve taste. The need depends on your specific city and any personal health considerations.
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.