Louisiana
Concordia Parish drinking water quality
8 active public water systems serve 25,845 people in Concordia Parish. 2 are compliant, 6 had at least one EPA violation in the past three years, 2 are designated serious violators, and 2 carry a health flag.
Needs attention
Community water systems
7 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Concordia Waterworks District 1 |
6,921 | 0 | 0 | |
|
Town of Vidalia Water System |
6,354 | 2 | 0 | |
|
Monterey Rural Water System INC |
5,250 | 1 | 0 | |
|
Town of Ferriday Water System |
3,816 | 6 | 2 | |
|
Lake ST John Waterworks District 1 |
2,067 | 2 | 0 | |
|
Village of Clayton Water System |
723 | 2 | 2 | |
|
Village of Ridgecrest Water Supply |
684 | 5 | 4 |
Non-community systems (1: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
LA Hydroelectric Limited Partnership |
30 | 0 | 0 |
Inactive systems (4, 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.