Water quality for ZIP code 39503
ZIP 39503 covers Gulfport, Lyman, and Biloxi in Harrison County, Mississippi, one of 11 ZIP codes in the county. 52 active public water systems serve the county; 31 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Harrison County
34 systems, nearest firstNon-community systems in Harrison County (17: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
County Farm RD Hurricane Shelter Gulfport |
25 | 0 | 0 | |
|
Sutter Water Service, INC |
500 | 0 | 0 | |
|
West Harrison High School |
1,385 | 1 | 0 | |
|
Harrison Central High School |
1,573 | 1 | 0 | |
|
Lizana Elementary School |
461 | 1 | 0 | |
|
Lobouy Road Hurricane Shelter Gulfport |
25 | 0 | 0 | |
|
Cousins Foodmart |
100 | 2 | 0 | |
|
Bernard Bayou Industrial District |
779 | 1 | 0 | |
|
West Harrison Wtr & Sewer Dist #2 Pass Christian |
40 | 0 | 0 | |
|
Pineville Elementary School |
173 | 1 | 0 | |
|
ST Patrick High School |
650 | 1 | 0 | |
|
Clc Enterprises Gulfport |
50 | 3 | 1 | |
|
Saucier Hurricane Shelter Gulfport |
25 | 0 | 0 | |
|
The Chemours Company Fc, LLC |
630 | 2 | 0 | |
|
Diberville High School |
1,599 | 2 | 0 | |
|
Lakeview RV Resort Gulfport |
50 | 0 | 0 | |
|
Fallen Oaks Golf Course |
40 | 2 | 0 |
About this data
Water systems are matched to Harrison County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
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.