Loading water data...
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 17 counties in Alabama
17 counties ranked by average water quality score
| Rank | County | Avg Score | Grade | Cities | Population | Score Range |
|---|---|---|---|---|---|---|
| 1 | Montgomery County | 100 | A | 1 | 276,000 | 100 - 100 |
| 2 | Calhoun County | 99 | A | 1 | 56,646 | 99 - 99 |
| 3 | Coffee County | 97 | A | 1 | 48,000 | 97 - 97 |
| 4 | Houston County | 96 | A | 1 | 97,146 | 96 - 96 |
| 5 | Morgan County | 96 | A | 1 | 77,103 | 96 - 96 |
| 6 | Limestone County | 90 | A | 1 | 43,431 | 90 - 90 |
| 7 | Tuscaloosa County | 88 | B | 2 | 207,075 | 76 - 99 |
| 8 | Jefferson County | 86 | B | 2 | 671,091 | 80 - 91 |
| 9 | Madison County | 83 | B | 2 | 364,221 | 74 - 92 |
| 10 | Lee County | 79 | C | 2 | 130,812 | 76 - 82 |
| 11 | Baldwin County | 79 | C | 1 | 33,372 | 79 - 79 |
| 12 | Lauderdale County | 72 | C | 1 | 77,766 | 72 - 72 |
| 13 | Mobile County | 70 | C | 2 | 308,190 | 52 - 87 |
| 14 | Russell County | 67 | D | 1 | 42,267 | 67 - 67 |
| 15 | Autauga County | 64 | D | 1 | 46,614 | 64 - 64 |
| 16 | Etowah County | 64 | D | 1 | 44,637 | 64 - 64 |
| 17 | Shelby County | 61 | D | 1 | 40,986 | 61 - 61 |
2 cities • 671,091 residents
2 cities • 308,190 residents
See all 17 counties in the ranking table above
Our county-level water quality analysis aggregates data from municipal water systems across Alabama. Each county's score represents the average water quality across all analyzed cities within that county, weighted by population served.
With 17 counties and 22 cities analyzed, this data helps residents understand regional water quality patterns in Alabama. County scores range from 52/100 to 100/100, reflecting the diversity of water sources and treatment infrastructure across the state.
Currently, 4 counties in Alabama 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.