HIDDEN LAKE COLONY
Montana — Community Water System — PWSID: MT0003932
System Information
| PWSID | MT0003932 |
| System Name | HIDDEN LAKE COLONY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | May 29, 1997 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | CUT BANK |
| ZIP Code | 59427 |
| Address | 100 WELSH ROAD |
| Organization | HIDDEN LAKE COLONY INC |
| Phone | 406-336-3695 |
Population & Service
| Population Served | 80 |
| Service Connections | 7 |
Drinking Water Violations (236)
This water system has 236 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Oct 1, 2024 | — | Other | No | No | — | — | — | Resolved | Oct 1, 2024 | — | |
| Oct 1, 2024 | — | Other | No | No | — | — | — | Resolved | Oct 1, 2024 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2024 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2024 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2024 | — | |
| Apr 1, 2024 | Apr 30, 2024 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2024 | — | |
| Apr 1, 2024 | Apr 30, 2024 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2024 | — | |
| Apr 1, 2024 | Apr 30, 2024 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2024 | — | |
| Jun 1, 2023 | Jun 30, 2023 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2023 | — | |
| Jun 1, 2023 | Jun 30, 2023 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2023 | — | |
| Jun 1, 2023 | Jun 30, 2023 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Jun 27, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Jun 27, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 27, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 27, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 27, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Jun 27, 2023 | — | |
| Mar 1, 2023 | Mar 31, 2023 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2023 | — | |
| Mar 1, 2023 | Mar 31, 2023 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2023 | — | |
| Mar 1, 2023 | Mar 31, 2023 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2023 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Sep 22, 2022 | — | MR | No | Yes | — | — | — | Resolved | Sep 27, 2022 | — | |
| Sep 22, 2022 | — | MR | No | Yes | — | — | — | Resolved | Sep 27, 2022 | — | |
| Sep 22, 2022 | — | MR | No | Yes | — | — | — | Resolved | Sep 27, 2022 | — | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2022 | — | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2022 | — | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2022 | — | |
| Dec 1, 2021 | Dec 31, 2021 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2021 | — | |
| Dec 1, 2021 | Dec 31, 2021 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2021 | — | |
| Dec 1, 2021 | Dec 31, 2021 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2021 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | — | Other | No | No | — | — | — | Resolved | Jul 20, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | — | Other | No | No | — | — | — | Resolved | Jul 20, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Jun 27, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Jun 27, 2019 | — |
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.