GRAND VALLEY ESTATES SUBDIVISION
Montana - Community Water System - PWSID: MT0004474
System Information
| PWSID | MT0004474 |
| System Name | GRAND VALLEY ESTATES 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 | Aug 19, 2014 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | HELENA |
| ZIP Code | 59602 |
| Address | 7504 GRAND VALLEY LOOP |
| Organization | WAGNER, TRISHA |
| Phone | 406-403-4816 |
Population & Service
| Population Served | 50 |
| Service Connections | 23 |
Drinking Water Violations (81)
This water system has 81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 15, 2022 | - | MR | No | Yes | - | - | - | Resolved | Aug 29, 2022 | - | |
| Jul 15, 2022 | - | MR | No | Yes | - | - | - | Resolved | Aug 29, 2022 | - | |
| Jul 15, 2022 | - | MR | No | Yes | - | - | - | Resolved | Aug 29, 2022 | - | |
| Oct 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2022 | - | |
| Oct 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2022 | - | |
| Oct 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2022 | - | |
| Jan 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.003 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.003 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.003 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.0004 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.4 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.4 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.4 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.0004 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.0004 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 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.