Combined Radium (-226 and -228) violations in Montana
16 active public water systems in Montana had a Combined Radium (-226 and -228) violation in the past three years, 1 of them in the latest quarter of EPA's data. What Combined Radium (-226 and -228) is and why it matters.
Systems with a Combined Radium (-226 and -228) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ashland Community Water System County |
210 | 3 | 0 | |
|
Malta City of Malta · Phillips County |
1,800 | 3 | 0 | |
|
White Sulphur Springs City of White Sulphur Springs · Meagher County |
1,000 | 4 | 1 | |
|
Gore Hill County Water Dist Great Falls · Cascade County |
500 | 4 | 0 | |
|
Indian Springs Ranch Sub Eureka · Lincoln County |
455 | 3 | 0 | |
|
Pryor Water System County |
406 | 7 | 1 | |
|
Heart Butte Water System County |
400 | 5 | 0 | |
|
Sun Prairie Water District Great Falls · Cascade County |
350 | 5 | 1 | |
|
Keller Subdivision NO 2 HOA Dillon · Beaverhead County |
300 | 2 | 0 | |
|
Cskt Division of Fire Management County |
190 | 7 | 1 | |
|
Cherry Creek Wua Glasgow Glasgow · Valley County |
180 | 5 | 0 | |
|
Harveys Mobile Home Park Missoula · Missoula County |
98 | 2 | 0 | |
|
Hi-Line Colony Whitlash · Liberty County |
92 | 4 | 0 | |
|
Buffalo Ranch Water Company Livingston · Park County |
33 | 2 | 0 | |
|
Fishermans Village Subdivision West Yellowstone · Gallatin County |
25 | 9 | 1 | |
|
Riceville Heights Subdivision Belt · Cascade County |
25 | 5 | 2 |
About this data
A system is counted once if any of its violations in the past three years involved Combined Radium (-226 and -228), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Combined Radium (-226 and -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.