Alabama drinking water quality
Alabama has 560 active public water systems serving 6.4 million people. 260 of them, 46%, had at least one EPA violation in the past three years, 72 have an unresolved violation today, and 6 are designated serious violators by the EPA.
Active systems
560
in 67 counties
People served
6.4M
502 community systems serve 6.4M
Violations, past 3 years
260
46% of active systems
Serious violators
6
10 systems carry a health flag
Largest counties
All 67 counties| County | People served | Systems | With violations |
|---|---|---|---|
| Jefferson | 875,880 | 15 | 8 |
| Madison | 607,701 | 9 | 3 |
| Mobile | 461,411 | 15 | 12 |
| Baldwin | 309,551 | 24 | 13 |
| Montgomery | 291,672 | 8 | 3 |
| Tuscaloosa | 272,754 | 10 | 4 |
| Shelby | 212,655 | 16 | 6 |
| Lee | 202,429 | 7 | 1 |
| Morgan | 159,987 | 6 | 0 |
| Calhoun | 152,923 | 10 | 3 |
Largest community water systems
All 560 systems| System | Serves | Status |
|---|---|---|
| Central Alabama Water Jefferson County |
653,322 | |
| Huntsville Utilities Water Dept. Madison County |
310,107 | |
| Mobile, Bd. of W&s Comm. of the City of Mobile County |
279,000 | |
| Montgomery, the Ww&ssb of the City of Montgomery County |
276,000 | |
| Tuscaloosa Water & Sewer Tuscaloosa County |
166,524 | |
| Madison County Water Department Madison County |
119,100 | |
| Dothan Utilities, City of Houston County |
97,146 | |
| Limestone County Water & Sewer Auth. Limestone County |
90,900 | |
| Bessemer Water Service Jefferson County |
86,091 | |
| Florence Water Department, City of Lauderdale County |
77,766 |
About the Alabama data
Retrieved from EPA ECHO on Oct 11, 2026.