Arsenic violations in Louisiana
4 active public water systems in Louisiana had a Arsenic violation in the past three years, 3 of them in the latest quarter of EPA's data. What Arsenic is and why it matters.
Systems with a Arsenic violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
ST Martin Water District 4 Catahoula St. Martin County |
3,000 | 2 | 1 | |
|
Tokai Carbon CB West Baton Rouge County |
85 | 1 | 0 | |
|
Badger Trail Water System Iberia County |
42 | 5 | 1 | |
|
Cvd Ceramics Iberia County |
25 | 2 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Arsenic, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Arsenic 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.