GRASS LAND ESTATES
Montana - Community Water System - PWSID: MT0004448
System Information
| PWSID | MT0004448 |
| System Name | GRASS LAND ESTATES |
| 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 | Jan 22, 2007 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | EAST HELENA |
| ZIP Code | 59635 |
| Address | 34 INDUSTRY LOOP BLDG E |
| Organization | ROCKY MOUNTAIN OPERATIONS |
| Phone | 406-442-2949 |
Population & Service
| Population Served | 228 |
| Service Connections | 91 |
Drinking Water Violations (65)
This water system has 65 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, 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 | - | |
| Sep 1, 2018 | Sep 30, 2018 | MON | No | Yes | - | - | - | Resolved | Sep 25, 2018 | - | |
| Sep 1, 2018 | Sep 30, 2018 | MON | No | Yes | - | - | - | Resolved | Sep 25, 2018 | - | |
| Sep 1, 2018 | Sep 30, 2018 | MON | No | Yes | - | - | - | Resolved | Sep 25, 2018 | - | |
| Jan 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Sep 20, 2012 | - | |
| Jan 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Sep 20, 2012 | - | |
| Jul 1, 2008 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Jul 1, 2008 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Jul 1, 2008 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Jul 1, 2008 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Jul 1, 2008 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Jul 1, 2008 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Jul 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Jul 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Jul 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Jul 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jan 21, 2009 | - | |
| Feb 1, 2007 | Feb 28, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2007 | - | |
| Feb 1, 2007 | Feb 28, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2007 | - | |
| Feb 1, 2007 | Feb 28, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2007 | - | |
| Feb 1, 2007 | Feb 28, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2007 | - | |
| Feb 1, 2007 | Feb 28, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2007 | - | |
| Feb 1, 2007 | Feb 28, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Dec 31, 2007 | - |
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.