Chlorine (MRDL) violations in Oregon
7 active public water systems in Oregon had a Chlorine (MRDL) violation in the past three years, 3 of them in the latest quarter of EPA's data. What Chlorine (MRDL) is and why it matters.
Systems with a Chlorine (MRDL) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Warm Springs Water Treatment Plant Warm Springs · County |
3,800 | 16 | 5 | |
|
Burns Paiute Burns · County |
155 | 13 | 3 | |
|
Provolt Community Church Josephine County |
33 | 3 | 0 | |
|
Ctuir Pwd Mission Pendelton · County |
1,310 | 4 | 0 | |
|
Simnasho Schoolie Warm Springs · County |
350 | 9 | 3 | |
|
Sidwalter Warm Springs · County |
130 | 10 | 3 | |
|
Bia Celilo Village County |
75 | 2 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) 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 Oregon 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.