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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.
Compare water quality across 26 counties in Florida
26 counties ranked by average water quality score
| Rank | County | Avg Score | Grade | Cities | Population | Score Range |
|---|---|---|---|---|---|---|
| 1 | Flagler County | 98 | A | 1 | 112,324 | 98 - 98 |
| 2 | Osceola County | 97 | A | 2 | 192,854 | 96 - 97 |
| 3 | Bay County | 97 | A | 1 | 34,345 | 97 - 97 |
| 4 | Lee County | 94 | A | 3 | 340,945 | 87 - 99 |
| 5 | Duval County | 94 | A | 1 | 826,664 | 94 - 94 |
| 6 | Manatee County | 92 | A | 1 | 58,584 | 92 - 92 |
| 7 | Volusia County | 91 | A | 4 | 299,380 | 74 - 100 |
| 8 | Sarasota County | 89 | B | 3 | 364,788 | 71 - 100 |
| 9 | Seminole County | 87 | B | 5 | 268,052 | 74 - 97 |
| 10 | Leon County | 86 | B | 1 | 200,480 | 86 - 86 |
| 11 | Orange County | 83 | B | 4 | 714,588 | 69 - 99 |
| 12 | Lake County | 82 | B | 5 | 186,236 | 71 - 93 |
| 13 | Highlands County | 81 | B | 1 | 46,295 | 81 - 81 |
| 14 | Pinellas County | 80 | B | 7 | 1,111,780 | 61 - 98 |
| 15 | Polk County | 79 | C | 2 | 280,834 | 63 - 95 |
| 16 | Brevard County | 78 | C | 3 | 365,721 | 54 - 91 |
| 17 | Pasco County | 78 | C | 1 | 214,403 | 78 - 78 |
| 18 | St. Lucie County | 77 | C | 2 | 282,485 | 64 - 90 |
| 19 | Palm Beach County | 76 | C | 9 | 787,472 | 54 - 96 |
| 20 | Escambia County | 74 | C | 1 | 242,172 | 74 - 74 |
| 21 | Marion County | 74 | C | 1 | 66,449 | 74 - 74 |
| 22 | Hillsborough County | 73 | C | 2 | 765,136 | 72 - 74 |
| 23 | Monroe County | 69 | D | 1 | 86,000 | 69 - 69 |
| 24 | Miami-Dade County | 67 | D | 6 | 3,064,809 | 61 - 78 |
| 25 | Broward County | 64 | D | 19 | 1,506,702 | 21 - 90 |
| 26 | Collier County | 64 | D | 1 | 83,804 | 64 - 64 |
3 cities • 340,945 residents
1 cities • 826,664 residents
4 cities • 714,588 residents
7 cities • 1,111,780 residents
2 cities • 280,834 residents
3 cities • 365,721 residents
9 cities • 787,472 residents
2 cities • 765,136 residents
6 cities • 3,064,809 residents
19 cities • 1,506,702 residents
See all 26 counties in the ranking table above
Our county-level water quality analysis aggregates data from municipal water systems across Florida. Each county's score represents the average water quality across all analyzed cities within that county, weighted by population served.
With 26 counties and 87 cities analyzed, this data helps residents understand regional water quality patterns in Florida. County scores range from 21/100 to 100/100, reflecting the diversity of water sources and treatment infrastructure across the state.
Currently, 4 counties in Florida have average scores below 70, indicating potential water quality concerns. Residents in these areas should review their city's specific report and consider water filtration options.