Barium violations in Oregon
13 active public water systems in Oregon had a Barium violation in the past three years. What Barium is and why it matters.
Health effects: Short-term exposure above the MCL can cause increases in blood pressure. Chronic exposure is associated with cardiovascular effects, kidney damage, and gastrointestinal disturbance. The general population is at risk; those with pre-existing hypertension or kidney disease face greater concern.
Systems with a Barium violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Tigard, City of Washington County |
62,500 | 2 | 0 | |
|
Warm Springs Water Treatment Plant Warm Springs · County |
3,800 | 16 | 5 | |
|
Rickreall Water Association Polk County |
1,650 | 6 | 0 | |
|
Interlachen Water Pud Multnomah County |
360 | 7 | 0 | |
|
Area 61 Josephine County |
260 | 8 | 1 | |
|
Sunshine Plaza Jackson County |
200 | 11 | 1 | |
|
Burns Paiute Burns · County |
155 | 13 | 3 | |
|
Medford Gold Hill KOA Jackson County |
100 | 7 | 0 | |
|
Currinsville Mobile Home Park Clackamas County |
90 | 7 | 2 | |
|
Nps Oregon Caves National Monument O&m Josephine County |
75 | 8 | 0 | |
|
Galice Subdivision Water CO Josephine County |
33 | 13 | 3 | |
|
Big Oak Marina Multnomah County |
30 | 9 | 2 | |
|
Kashmir Business Park LLC Marion County |
30 | 7 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Barium, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Barium 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.