Interim Enhanced Surface Water Treatment Rule violations in Louisiana
15 active public water systems in Louisiana had a Interim Enhanced Surface Water Treatment Rule violation in the past three years, 2 of them in the latest quarter of EPA's data. What Interim Enhanced Surface Water Treatment Rule is and why it matters.
Systems with a Interim Enhanced Surface Water Treatment Rule violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Pendleton Water Association Sabine County |
2,634 | 6 | 1 | |
|
Town of Newellton Water System Tensas County |
1,100 | 9 | 5 | |
|
New Orleans Carrollton Water Works Orleans County |
334,903 | 1 | 0 | |
|
City of Shreveport Water System Caddo County |
192,378 | 3 | 0 | |
|
City of Monroe Water System Ouachita County |
57,000 | 3 | 0 | |
|
New Orleans Algiers Water Works Orleans County |
52,785 | 1 | 0 | |
|
City of Morgan City Water System St. Mary County |
12,703 | 1 | 0 | |
|
City of Franklin Water Supply St. Mary County |
8,325 | 5 | 2 | |
|
City of Mansfield Water System De Soto County |
7,512 | 2 | 0 | |
|
Intracoastal Water System West Iberville County |
6,489 | 2 | 0 | |
|
Tensas Water District Association Tensas County |
3,843 | 2 | 1 | |
|
Town of Logansport Water System De Soto County |
2,448 | 3 | 0 | |
|
Fairview Union Water System Red River County |
2,346 | 4 | 0 | |
|
Domino Sugar St. Bernard County |
360 | 4 | 1 | |
|
Berwick Bayou Vista WW Commission St. Mary County |
0 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Interim Enhanced Surface Water Treatment Rule, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Interim Enhanced Surface Water Treatment Rule alone.
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.