Long Term 2 Enhanced Surface Water Treatment Rule (LT2) violations in Oregon
6 active public water systems in Oregon had a Long Term 2 Enhanced Surface Water Treatment Rule (LT2) violation in the past three years, 4 of them in the latest quarter of EPA's data. What Long Term 2 Enhanced Surface Water Treatment Rule (LT2) is and why it matters.
Systems with a Long Term 2 Enhanced Surface Water Treatment Rule (LT2) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Portland Water Bureau Multnomah County |
666,200 | 1 | 1 | |
|
Sandy, City of Clackamas County |
12,991 | 2 | 1 | |
|
Warm Springs Water Treatment Plant Warm Springs · County |
3,800 | 16 | 5 | |
|
Hamlet Quick-Stop Clatsop County |
30 | 2 | 1 | |
|
Canyon City Water Department Grant County |
666 | 3 | 1 | |
|
Coast Marina & RV Park Lane County |
50 | 2 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Long Term 2 Enhanced Surface Water Treatment Rule (LT2), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Long Term 2 Enhanced Surface Water Treatment Rule (LT2) 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.