Miami-Dade County
Water purification in Miami
Of all 67 Florida counties, Miami-Dade carries the highest population-weighted average of contaminants above EWG's health guidelines. If you are on city water in Miami, this is what the testing found.
What testing found in Miami
Largest utility
Miami Dade Water and Sewer Authority
serves 2,300,000 people
17 of 41
detected contaminants exceed EWG health guidelines
- 16.4
- County average above guideline
- 24
- Water systems in county
- 21
- Worst single system in county
Miami-Dade County ranks #1 of 67 Florida counties for contaminants above EWG guidelines — 11.6 above the statewide median of 4.8.
Reported water systems in Miami-Dade County
| System | Serves | Above guideline |
|---|---|---|
| Miami Dade Water and Sewer AuthorityMiami | 2,300,000 | 17 / 41 |
| City of HialeahHialeah | 238,000 | 14 / 32 |
| North Miami BeachNorth Miami Beach | 180,000 | 11 / 22 |
| City of Miami BeachMiami Beach | 100,000 | 18 / 41 |
| City of North MiamiNorth Miami | 88,349 | 18 / 36 |
| City of HomesteadHomestead | 68,438 | 14 / 27 |
Miami-Dade is unusual twice over. Its county average of 16.4 is the highest in Florida — more than three times the statewide median of 4.8 — and its water comes from remarkably few systems: just 24 serve over 3.1 million people, with Miami-Dade Water and Sewer alone covering 2.3 million. One utility's treatment decisions therefore reach more Florida households than any other in the state.
What this does and does not mean
EWG's health guidelines are stricter than federal EPA limits, so water that exceeds them is usually still legal to serve. The dataset reports how many contaminants were detected above guideline, not which ones — the only way to know what is in the water at your tap is to test it there.
Source: EWG Tap Water Database (ewg.org/tapwater), data years 2015–2024
What we install in Miami
Whole-home filtration
Six media beds at the point of entry — catalytic carbon for chlorine, chloramine and PFAS, resins for hardness, KDF for heavy metals, garnet down to 10-20 microns.
Alkaline reverse osmosis
Six stages under the sink for unlimited remineralized drinking water at pH 8.5 to 9.5.
Well water treatment
For homes off city water: a lab analysis first, then a three-tank system tuned to your well's chemistry.
Free water test in Miami
José Molina will walk your home, test your water on site, and recommend a system. No cost, no obligation, in English or Spanish.
Serving Miami-Dade County · Serving Central Florida, the Treasure Coast & South Florida