Louisiana
St. John the Baptist Parish drinking water quality
12 active public water systems serve 47,793 people in St. John the Baptist Parish. 4 are compliant, 8 had at least one EPA violation in the past three years, 0 are designated serious violators, and 2 carry a health flag.
Needs attention
Community water systems
4 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
ST John Water District 3 |
31,965 | 0 | 0 | |
|
ST John Water District 1 |
10,484 | 1 | 0 | |
|
ST John Water District 2 |
3,702 | 1 | 0 | |
|
Pleasure Bend Water Supply |
528 | 1 | 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 |
|---|---|---|---|---|
|
Marathon Petroleum Company LLC |
817 | 3 | 0 | |
|
Pinnacle Polymers |
110 | 1 | 0 | |
|
Frenier Landing Restaurant |
50 | 1 | 1 | |
|
Pinnacle Polymer Admin Bldg |
32 | 2 | 0 | |
|
Gators Den Cajun Cafe |
30 | 0 | 0 | |
|
Beacon Lounge |
25 | 0 | 0 | |
|
Cajun Pride Water System |
25 | 0 | 0 | |
|
Zip Nola Laplace |
25 | 1 | 1 |
Inactive systems (40, 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 Louisiana 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.