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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 576,510 residents
Pinellas County in Florida has an average water quality score of 69/100 (Grade C+) based on analysis of 7 municipal water systems. The county's water systems serve approximately 576,510 residents.
Water quality in Pinellas County is fair, with some cities showing room for improvement. 3 cities have scores below 70, indicating elevated contaminant levels that residents should be aware of. Dunedin has the best water quality at 96/100.
7 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Dunedin Top concern: Haloacetic Acids (19.8% of limit) | 96 | A+ | 39,205 |
| 2 | Tarpon Springs Top concern: Lead (26.5% of limit) | 74 | B- | 24,725 |
| 3 | Largo Top concern: Total Trihalomethanes (72.6% of limit) | 72 | B- | 80,565 |
| 4 | Pinellas Park Top concern: Copper (41.1% of limit) | 70 | B- | 50,142 |
| 5 | Clearwater Top concern: Total Trihalomethanes (42.9% of limit) | 68 | C+ | 114,409 |
| 6 | St. Petersburg Top concern: Haloacetic Acids (54.8% of limit) | 56 | C- | 255,045 |
| 7 | Safety Harbor Top concern: Total Trihalomethanes (61.9% of limit) | 47 | F | 12,419 |
Top detected contaminants across county water systems
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| Total Trihalomethanes | 31.411 ug/L | 58.104 ug/L | 80 ug/L | 39.3% | 7 |
| Copper | 0.475 mg/L | 0.646 mg/L | 1.3 mg/L | 36.6% | 5 |
| Haloacetic Acids | 18.197 ug/L | 32.857 ug/L | 60 ug/L | 30.3% | 6 |
| Lead | 0.004 mg/L | 0.007 mg/L | 0.015 mg/L | 28.2% | 6 |
| Mercury | 0.001 mg/L | 0.001 mg/L | 0.002 mg/L | 25.7% | 7 |
| Nitrite | 0.243 mg/L | 0.458 mg/L | 1 mg/L | 24.3% | 6 |
| Fluoride | 0.929 mg/L | 1.41 mg/L | 4 mg/L | 23.2% | 6 |
| Chromium | 0.022 mg/L | 0.048 mg/L | 0.1 mg/L | 22% | 6 |
Recent violations across county water systems
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 576,510 residents.
The county shows moderate water quality performance, with scores ranging from 47/100 in Safety Harbor to 96/100 in Dunedin. This 49-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 Total Trihalomethanes, Copper, Haloacetic Acids. All monitored contaminants remain within acceptable levels relative to EPA Maximum Contaminant Levels (MCLs).
Water quality in Pinellas 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.
Pinellas County has an average water quality score of 69/100 (Grade C+) based on analysis of 7 municipal water systems serving 576,510 residents.
Dunedin has the highest water quality score in Pinellas County at 96/100. View the detailed report for Dunedin.
Given the water quality variation across Pinellas County, we recommend reviewing your specific city's water quality report. 3 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.