Mississippi
Hancock County drinking water quality
22 active public water systems serve 56,970 people in Hancock County. 9 are compliant, 13 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.
Community water systems
14 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Diamondhead Utilities-North |
12,577 | 1 | 0 | |
|
City of Bay ST Louis Bay St Louis |
9,284 | 3 | 0 | |
|
Kiln Utility and Fire District of Hancoc |
7,051 | 1 | 0 | |
|
City of Waveland Waveland |
6,400 | 2 | 0 | |
|
Standard Dedeaux Water Association |
5,386 | 1 | 0 | |
|
Stennis Space Center |
4,700 | 0 | 0 | |
|
Hancock County Water & Sewer |
3,254 | 3 | 1 | |
|
Hancock County Water & Sewer Bayside Bay St Louis |
2,458 | 0 | 0 | |
|
Pearlington Water and Sewer District |
1,412 | 1 | 0 | |
|
White Cypress Lakes |
507 | 3 | 0 | |
|
Clermont Harbor |
61 | 3 | 0 | |
|
Sunrise Mobile Home Park |
25 | 1 | 0 | |
|
Hancock County Utility Authority |
0 | 0 | 0 | |
|
Hancua-Pearlington |
0 | 0 | 0 |
Non-community systems (8: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Silver Slipper Casino & Hotel Bay St Louis |
3,285 | 1 | 0 | |
|
Coffee Culture Gulfport |
150 | 3 | 0 | |
|
Hancock County Welcome Center |
100 | 0 | 0 | |
|
Lafrance Fishing Camp |
100 | 0 | 0 | |
|
Port Bienville Ind Park |
95 | 0 | 0 | |
|
Bay Hide Away RV Park & Campground Bay St Louis |
50 | 0 | 0 | |
|
Kapalama Well Pass Christian |
50 | 2 | 0 | |
|
Infinity Science Center |
25 | 0 | 0 |
Inactive systems (54, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Mississippi records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.