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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 7 cities serving 1,111,780 residents
Pinellas County in Florida has an average water quality score of 80/100 (Grade B) based on analysis of 7 municipal water systems. The county's water systems serve approximately 1,111,780 residents.
Overall, Pinellas County demonstrates good water quality standards. 4 of 7 cities exceed the county average, with Safety Harbor leading with a score of 98/100.
7 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Safety Harbor Biggest deduction: Other PFAS detected in UCMR5 sampling: PFPeA 3.4 ppt (−2 pts) | 98 | A | 16,473 |
| 2 | Largo Biggest deduction: 14 monitoring/reporting violations in the last 5 years (−10 pts) | 90 | A | 506,353 |
| 3 | St. Petersburg Biggest deduction: 8 monitoring/reporting violations in the last 5 years (−8 pts) | 90 | A | 349,979 |
| 4 | Dunedin Biggest deduction: 22 monitoring/reporting violations in the last 5 years (−10 pts) | 80 | B | 46,161 |
| 5 | Clearwater Biggest deduction: PFOS detected at up to 5.9 ppt in UCMR5 sampling (2025-05-07), at or above EPA's 4 ppt MCL (−10 pts) | 70 | C | 115,000 |
| 6 | Tarpon Springs Biggest deduction: PFOA detected at up to 10.5 ppt in UCMR5 sampling (2023-09-28), at or above EPA's 4 ppt MCL (−10 pts) | 69 | D | 28,875 |
| 7 | Pinellas Park Biggest deduction: 3 health-based violations (MCL/treatment-technique) in the last 5 years (−30 pts) | 61 | D | 48,939 |
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 |
|---|---|---|---|---|---|
| PFAS (PFOA/PFOS max, UCMR5) | 6.114 ppt | 36.9 ppt | 4 ppt | 152.9% | 7 |
| TTHM (2012–2019 avg) | 37.85 ug/L | 55.192 ug/L | 80 ug/L | 47.3% | 7 |
| Arsenic (2012–2019 avg) | 3.857 ug/L | 7.888 ug/L | 10 ug/L | 38.6% | 4 |
| HAA5 (2012–2019 avg) | 19.832 ug/L | 26.131 ug/L | 60 ug/L | 33.1% | 7 |
| Fluoride (2012–2019 avg) | 0.429 mg/L | 0.664 mg/L | 4 mg/L | 10.7% | 4 |
| Lead (90th percentile) | 1.329 ppb | 2.5 ppb | 15 ppb | 8.9% | 7 |
| Nitrate (2012–2019 avg) | 0.5 mg/L | 1.491 mg/L | 10 mg/L | 5% | 4 |
| Uranium (2012–2019 avg) | 1.225 ug/L | 3.358 ug/L | 30 ug/L | 4.1% | 3 |
Recent violations across county water systems
Health-based: MCL exceeded — Maximum Contaminant Level Violation, Average - Total Haloacetic Acids (HAA5)
9/30/2024
Health-based: MCL exceeded — Maximum Contaminant Level Violation, Average - Total Haloacetic Acids (HAA5)
6/30/2024
Health-based: MCL exceeded — Maximum Contaminant Level Violation, Average - Total Haloacetic Acids (HAA5)
3/31/2024
Showing 10 of 20 recent violations
Water quality in Pinellas County, Florida reflects the region's unique combination of water sources, treatment infrastructure, and environmental factors. Our comprehensive analysis examines 7 municipal water systems serving a combined population of over 1,111,780 residents.
The county shows strong water quality performance, with scores ranging from 61/100 in Pinellas Park to 98/100 in Safety Harbor. This 37-point spread indicates significant variation in water quality across the county, suggesting different water sources or treatment approaches.
The most prevalent contaminants detected across Pinellas County water systems include PFAS (PFOA/PFOS max, UCMR5), TTHM (2012–2019 avg), Arsenic (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.
Pinellas 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.
Pinellas County has an average water quality score of 80/100 (Grade B) based on analysis of 7 municipal water systems serving 1,111,780 residents.
Safety Harbor has the highest water quality score in Pinellas County at 98/100. View the detailed report for Safety Harbor.
Most cities in Pinellas 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.