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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 6 cities serving 3,064,809 residents
Miami-Dade County in Florida has an average water quality score of 67/100 (Grade D) based on analysis of 6 municipal water systems. The county's water systems serve approximately 3,064,809 residents.
Water quality in Miami-Dade County is fair, with some cities showing room for improvement. 5 cities have scores below 70, indicating elevated contaminant levels that residents should be aware of. Homestead has the best water quality at 78/100.
6 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Homestead Biggest deduction: 13 monitoring/reporting violations in the last 5 years (−10 pts) | 78 | C | 80,000 |
| 2 | Miami Biggest deduction: PFOA detected at up to 14 ppt in UCMR5 sampling (2024-05-15), at or above EPA's 4 ppt MCL (−10 pts) | 68 | D | 2,377,460 |
| 3 | North Miami Beach Biggest deduction: PFOA detected at up to 5.3 ppt in UCMR5 sampling (2024-12-02), at or above EPA's 4 ppt MCL (−10 pts) | 67 | D | 180,000 |
| 4 | Hialeah Biggest deduction: 15 monitoring/reporting violations in the last 5 years (−10 pts) | 64 | D | 238,000 |
| 5 | North Miami Biggest deduction: 15 monitoring/reporting violations in the last 5 years (−10 pts) | 64 | D | 89,349 |
| 6 | Miami Beach Biggest deduction: 14 monitoring/reporting violations in the last 5 years (−10 pts) | 61 | D | 100,000 |
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) | 29.267 ppt | 45 ppt | 4 ppt | 731.7% | 6 |
| HAA5 (2012–2019 avg) | 24.617 ug/L | 31.879 ug/L | 60 ug/L | 41% | 6 |
| TTHM (2012–2019 avg) | 25.012 ug/L | 34.982 ug/L | 80 ug/L | 31.3% | 6 |
| Lead (90th percentile) | 2.9 ppb | 7 ppb | 15 ppb | 19.3% | 6 |
| Fluoride (2012–2019 avg) | 0.577 mg/L | 0.793 mg/L | 4 mg/L | 14.4% | 5 |
| Nitrate (2012–2019 avg) | 0.464 mg/L | 1.881 mg/L | 10 mg/L | 4.6% | 5 |
| Arsenic (2012–2019 avg) | 0.412 ug/L | 0.971 ug/L | 10 ug/L | 4.1% | 5 |
| Uranium (2012–2019 avg) | 0.871 ug/L | 1.937 ug/L | 30 ug/L | 2.9% | 3 |
Recent violations across county water systems
Monitoring & reporting — Monitoring and Reporting (DBP) - Total Haloacetic Acids (HAA5)
12/31/2024
Showing 10 of 20 recent violations
Water quality in Miami-Dade County, Florida reflects the region's unique combination of water sources, treatment infrastructure, and environmental factors. Our comprehensive analysis examines 6 municipal water systems serving a combined population of over 3,064,809 residents.
The county shows moderate water quality performance, with scores ranging from 61/100 in Miami Beach to 78/100 in Homestead. This 17-point spread indicates relatively consistent water quality standards across municipal systems.
The most prevalent contaminants detected across Miami-Dade County water systems include PFAS (PFOA/PFOS max, UCMR5), HAA5 (2012–2019 avg), TTHM (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.
Water quality in Miami-Dade 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.
Miami-Dade County has an average water quality score of 67/100 (Grade D) based on analysis of 6 municipal water systems serving 3,064,809 residents.
Homestead has the highest water quality score in Miami-Dade County at 78/100. View the detailed report for Homestead.
Given the water quality variation across Miami-Dade County, we recommend reviewing your specific city's water quality report. 5 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.