Mississippi drinking water quality
Mississippi has 1,196 active public water systems serving 3.3 million people. 815 of them, 68%, had at least one EPA violation in the past three years, 138 have an unresolved violation today, and 7 are designated serious violators by the EPA.
Active systems
1,196
in 82 counties
People served
3.3M
1,015 community systems serve 3.2M
Violations, past 3 years
815
68% of active systems
Serious violators
7
25 systems carry a health flag
Largest counties
All 82 countiesLargest community water systems
All 1,196 systems| System | Serves | Status |
|---|---|---|
| City of Jackson Hinds County |
189,673 | |
| City of Gulfport Harrison County |
75,056 | |
| City of Southaven DeSoto County |
56,000 | |
| City of Olive Branch DeSoto County |
54,025 | |
| City of Hattiesburg Forrest County |
43,449 | |
| City of Tupelo Lee County |
37,000 | |
| City of Meridian Lauderdale County |
34,466 | |
| City of Starkville Oktibbeha County |
32,027 | |
| City of Brandon Rankin County |
31,852 | |
| City of Flowood Rankin County |
31,574 |
About the Mississippi data
Retrieved from EPA ECHO on Oct 11, 2026. EPA records for Mississippi systems do not include town names, so searches here match on ZIP code, street address, or county.