ASSINIBOINE & SIOUX RURAL WATER SYSTEM
Montana — Community Water System — PWSID: 083090050
System Information
| PWSID | 083090050 |
| System Name | ASSINIBOINE & SIOUX RURAL WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Nov 14, 2011 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | Montana |
| City | POPLAR |
| ZIP Code | 59255 |
| Address | P.O. Box 10 |
| Organization | WEEKS, ASHLEIGH |
| Phone | 406-768-5719 |
Population & Service
| Population Served | 1,726 |
| Service Connections | 245 |
Drinking Water Violations (18)
This water system has 18 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Sep 1, 2023 | Nov 30, 2023 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Nov 30, 2023 | — | |
| Sep 1, 2023 | Nov 30, 2023 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Nov 30, 2023 | — | |
| Sep 1, 2023 | Nov 30, 2023 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Nov 30, 2023 | — | |
| Sep 1, 2023 | Nov 30, 2023 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Nov 30, 2023 | — | |
| Jan 1, 2018 | Jan 31, 2018 | MON | No | No | — | — | — | Resolved | Jan 31, 2018 | — | |
| Apr 1, 2015 | Jun 30, 2015 | TT | Yes | No | .97 RATIO | TT | — | Resolved | Jun 30, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | TT | Yes | No | .93 RATIO | TT | — | Resolved | Mar 31, 2015 | — | |
| Oct 1, 2014 | Dec 31, 2014 | TT | Yes | No | .8 RATIO | TT | — | Resolved | Dec 31, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | TT | Yes | No | .74 RATIO | TT | — | Resolved | Sep 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | TT | Yes | No | .87 RATIO | TT | — | Resolved | Jun 30, 2014 | — | |
| Jun 1, 2013 | Jun 30, 2013 | TT | Yes | No | — | — | — | Resolved | Jun 30, 2013 | — | |
| Jun 1, 2013 | Jun 30, 2013 | TT | Yes | No | — | — | — | Resolved | Jun 30, 2013 | — | |
| Jun 1, 2013 | Jun 30, 2013 | TT | Yes | No | — | — | — | Resolved | Jun 30, 2013 | — | |
| Jun 1, 2013 | Jun 30, 2013 | TT | Yes | No | — | — | — | Resolved | Jun 30, 2013 | — | |
| Jun 1, 2013 | Jun 30, 2013 | TT | Yes | No | — | — | — | Resolved | Jun 30, 2013 | — | |
| Jun 1, 2013 | Jun 30, 2013 | TT | Yes | No | — | — | — | Resolved | Jun 30, 2013 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.