Miami-Dade County tap water
16 of 16 water systems serving Miami-Dade County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 25 community water systems list this county as served; 15 serve 3,300+ people with full PFAS testing.
- 1 had a health-based violation since 2021-10-26.
Largest systems serving this county
| System | Source | People served (whole system) | PFAS above a 2024 level? | Violations since 2021-10-26 |
|---|---|---|---|---|
| MDWASA - Main System | Groundwater | 2,377,460 | Yes | 0 |
| Hialeah, City of | Groundwater | 238,000 | Yes | 0 |
| North Miami Beach | Groundwater | 180,000 | Yes | 0 |
| Miami Beach, City of | Purchased groundwater | 100,000 | Yes | 0 |
| North Miami, City of | Groundwater | 89,349 | Yes | 0 |
| Fkaa J. Robert Dean W.t.p. | Groundwater | 86,000 | Yes | 0 |
| Homestead, City of | Groundwater | 80,000 | Yes | 0 |
| Mdwasa/Rex Utilities | Groundwater | 45,200 | Yes | 0 |
| Hialeah Gardens | Purchased groundwater | 22,200 | Yes | 0 |
| Opa Locka, City of | Groundwater | 16,479 | Yes | 0 |
| Florida City | Groundwater | 13,453 | Yes | 0 |
| West Miami, City of | Purchased groundwater | 8,500 | Yes | 0 |
Which one is yours? A county usually has several utilities. Your bill or your utility's annual water-quality report names yours. Population is for the whole system, which can cross county lines.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.