SWEETGRASS WATER USERS ASSN
Montana - Community Water System - PWSID: MT0000340
System Information
| PWSID | MT0000340 |
| System Name | SWEETGRASS WATER USERS ASSN |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Jun 29, 2026 |
Location & Contact
| State | Montana |
| City | SWEET GRASS |
| ZIP Code | 59484 |
| Address | PO BOX 91 |
| Organization | ROARK, BRENDA |
| Phone | 406-335-4150 |
Population & Service
| Population Served | 100 |
| Service Connections | 97 |
Drinking Water Violations (220)
This water system has 220 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.080 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.080 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.060 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.060 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Resolved | Aug 14, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Resolved | Aug 14, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Resolved | Aug 14, 2025 | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Jan 1, 2024 | Jan 31, 2024 | MR | No | Yes | - | - | - | Resolved | Jan 31, 2024 | - | |
| Jan 1, 2024 | Jan 31, 2024 | MR | No | Yes | - | - | - | Resolved | Jan 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Jan 31, 2024 | MR | No | Yes | - | - | - | Resolved | Jan 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Mar 31, 2022 | - | |
| Dec 30, 2021 | - | MR | No | No | - | TT | - | Resolved | Jan 25, 2022 | - | |
| Dec 30, 2021 | - | MR | No | No | - | TT | - | Resolved | Jan 25, 2022 | - | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2021 | - | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2021 | - | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2021 | - | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2021 | - | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2021 | - | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2021 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 14, 2020 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 14, 2020 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 14, 2020 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 14, 2020 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 14, 2020 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 14, 2020 | - | |
| Jan 1, 2017 | Jan 31, 2017 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2017 | - | |
| Jan 1, 2017 | Jan 31, 2017 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2017 | - | |
| Jan 1, 2017 | Jan 31, 2017 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2017 | - | |
| Jan 1, 2017 | Jan 31, 2017 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2017 | - |
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.