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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 12 cities serving 1,284,949 residents
Miami-Dade County in Florida has an average water quality score of 83/100 (Grade B+) based on analysis of 12 municipal water systems. The county's water systems serve approximately 1,284,949 residents.
Overall, Miami-Dade County demonstrates good water quality standards. 7 of 12 cities exceed the county average, with Miami Beach leading with a score of 96/100.
12 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Miami Beach Top concern: Lead (17.8% of limit) | 96 | A+ | 87,518 |
| 2 | Miami Gardens Top concern: Lead (18.1% of limit) | 94 | A | 114,281 |
| 3 | Doral Top concern: Fluoride (19.8% of limit) | 94 | A | 72,665 |
| 4 | Cutler Bay Top concern: Fluoride (18.9% of limit) | 92 | A | 41,938 |
| 5 | North Miami Beach Top concern: Haloacetic Acids (42.7% of limit) | 86 | A- | 43,616 |
| 6 | Aventura Top concern: Fluoride (15.5% of limit) | 86 | A- | 36,242 |
| 7 | Miami Top concern: Fluoride (17.1% of limit) | 85 | A- | 438,423 |
| 8 | Palmetto Bay Top concern: Lead (35.1% of limit) | 82 | B+ | 29,230 |
| 9 | Coral Gables Top concern: Total Trihalomethanes (44.7% of limit) | 81 | B+ | 50,118 |
| 10 | Homestead Top concern: Copper (34.7% of limit) | 73 | B- | 79,860 |
| 11 | Hialeah Top concern: Haloacetic Acids (61.2% of limit) | 70 | B- | 225,913 |
| 12 | North Miami Top concern: Lead (65.4% of limit) | 56 | C- | 65,145 |
Top detected contaminants across county water systems
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| Lead | 0.004 mg/L | 0.01 mg/L | 0.015 mg/L | 24.8% | 9 |
| Copper | 0.301 mg/L | 0.752 mg/L | 1.3 mg/L | 23.1% | 10 |
| Haloacetic Acids | 13.54 ug/L | 36.737 ug/L | 60 ug/L | 22.6% | 10 |
| Fluoride | 0.764 mg/L | 1.324 mg/L | 4 mg/L | 19.1% | 11 |
| Nitrate | 1.733 mg/L | 4.613 mg/L | 10 mg/L | 17.3% | 11 |
| Total Trihalomethanes | 13.156 ug/L | 35.941 ug/L | 80 ug/L | 16.4% | 10 |
| Chromium | 0.015 mg/L | 0.045 mg/L | 0.1 mg/L | 15.4% | 11 |
| Mercury | 0 mg/L | 0.001 mg/L | 0.002 mg/L | 14.1% | 11 |
Recent violations across county water systems
Showing 10 of 17 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 12 municipal water systems serving a combined population of over 1,284,949 residents.
The county shows strong water quality performance, with scores ranging from 56/100 in North Miami to 96/100 in Miami Beach. This 40-point spread indicates significant variation in water quality across the county, suggesting different water sources or treatment approaches.
The most prevalent contaminants detected across Miami-Dade County water systems include Lead, Copper, Haloacetic Acids. All monitored contaminants remain within acceptable levels relative to EPA Maximum Contaminant Levels (MCLs).
Miami-Dade 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.
Miami-Dade County has an average water quality score of 83/100 (Grade B+) based on analysis of 12 municipal water systems serving 1,284,949 residents.
Miami Beach has the highest water quality score in Miami-Dade County at 96/100. View the detailed report for Miami Beach.
Most cities in Miami-Dade 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.