Radium-228 violations in Montana
4 active public water systems in Montana had a Radium-228 violation in the past three years, 1 of them in the latest quarter of EPA's data. What Radium-228 is and why it matters.
Systems with a Radium-228 violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ashland Community Water System County |
210 | 3 | 0 | |
|
Pryor Water System County |
406 | 7 | 1 | |
|
Heart Butte Water System County |
400 | 5 | 0 | |
|
Cskt Division of Fire Management County |
190 | 7 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Radium-228, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Radium-228 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 Montana 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.