Combined Radium (-226 and -228) violations in South Dakota
7 active public water systems in South Dakota had a Combined Radium (-226 and -228) violation in the past three years. 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 |
|---|---|---|---|---|
|
Box Elder Box Elder · Pennington County |
14,000 | 1 | 0 | |
|
Standing Rock Rural Water System County |
6,839 | 4 | 1 | |
|
St. Francis County |
2,450 | 5 | 2 | |
|
Pine Ridge Hospital County |
316 | 7 | 0 | |
|
Vivos Xpoint Del Mar, Edgemont · Fall River County |
40 | 4 | 1 | |
|
Darlington Estates Rapid City · Pennington County |
25 | 2 | 0 | |
|
Provo Area Water System Edgemont · Fall River County |
25 | 4 | 1 |
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 South Dakota 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.