Find the utility that serves a ZIP code and how its public test results compare with published health guidelines.
Florida has 291 scored ZIP codes in Miami-Dade, Broward and Palm Beach, plus 64 cities and 114 water utilities statewide. Water Scores range from 49 to 100 (median 82) using EPA SDWA, EPA UCMR and Florida DEP data, 2015-2026.
| County | ZIP codes | Cities | Utilities | Median Water Score |
|---|---|---|---|---|
| Broward County | 88 | 19 | 23 | 87 |
| Miami-Dade County | 128 | 12 | 9 | 50 |
| Palm Beach County | 75 | 18 | 13 | 95 |
Public water system records for Florida cities outside Miami-Dade, Broward and Palm Beach counties.
The score starts at 100. It goes down 8 for each contaminant above a cited health guideline whose source states a cancer basis, 5 for each other contaminant above its cited guideline, 5 for each of PFOA and PFOS averaging above the 4.0 ppt limit in EPA's 2024 PFAS rule, 10 for each contaminant whose average of all samples is above EPA's legal limit (instead of its guideline step), and 1 for each contaminant with a cited cancer-based guideline that is detected below it. Only guidelines with a cited document count. The lowest score is 5. Higher is better.
Bands: Low 0 to 39, Weak 40 to 59, Fair 60 to 79 and Strong 80 to 100. Weights: 8, 5 and 1. Read the full methodology, the sources or the questions and answers.
Counted once per utility across Florida. Source: EPA SDWA, EPA UCMR and Florida DEP data, 2015-2026.
| Contaminant | Utilities above guideline | ZIP codes | Highest level | Years |
|---|---|---|---|---|
| Arsenic | 27 of 63 | 211 | 480 times its guideline | 2018-2022 |
| Bromodichloromethane | 12 of 63 | 142 | 277 times its guideline | 2020-2022 |
| Dibromochloromethane | 12 of 63 | 142 | 125 times its guideline | 2020-2022 |
| Chloroform | 12 of 63 | 142 | 68 times its guideline | 2020-2022 |
| Bromoform | 5 of 63 | 113 | 4.1 times its guideline | 2020-2022 |
| Chromium (hexavalent) | 2 of 63 | 2 | 9.5 times its guideline | 2015-2016 |
Pages update automatically when new or additional data arrives. Each page shows when its own data last changed.
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