ANGEL ISLAND SUBDIVISION
Montana — Community Water System — PWSID: MT0000582
System Information
| PWSID | MT0000582 |
| System Name | ANGEL ISLAND SUBDIVISION |
| 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 | Mar 5, 1980 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | TROY |
| ZIP Code | 59935 |
| Address | PO BOX 595 |
| Organization | ANGEL ISLAND ASSOCIATION |
| Phone | 406-295-5259 |
Population & Service
| Population Served | 150 |
| Service Connections | 184 |
Drinking Water Violations (17)
This water system has 17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun 1, 2003 | Jun 30, 2003 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2003 | — | |
| Jun 1, 2003 | Jun 30, 2003 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2003 | — | |
| Jun 1, 2003 | Jun 30, 2003 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2003 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1996 | Dec 31, 1996 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1996 | — | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Jul 23, 1981 | — | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | — | 0.05 mg/L | — | Archived | Jul 23, 1981 | — | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | — | 4.0 mg/L | — | Archived | Jul 23, 1981 | — | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | — | 10 mg/L | — | Archived | Jul 23, 1981 | — | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Jul 23, 1981 | — | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | — | 0.010 mg/L | — | Archived | Jul 23, 1981 | — | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Jul 23, 1981 | — | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | — | 2 mg/L | — | Archived | Jul 23, 1981 | — | |
| — | — | — | No | No | — | — | — | — | — | — |
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.