ANDESITE RIDGE WATER SYSTEM
Montana — Community Water System — PWSID: MT0004468
System Information
| PWSID | MT0004468 |
| System Name | ANDESITE RIDGE WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Nov 28, 2005 |
| Last Reported | Jan 5, 2026 |
Location & Contact
| State | Montana |
| City | BIG SKY |
| ZIP Code | 59716 |
| Address | PO BOX 161097 |
| Organization | MARSH, TANNER R |
| Phone | 406-577-4936 |
Population & Service
| Population Served | 450 |
| Service Connections | 223 |
Drinking Water Violations (18)
This water system has 18 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 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 27, 2020 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 27, 2020 | Consumer Confidence Rule |
| Feb 1, 2015 | Feb 28, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 28, 2015 | Total Coliform Rule |
| Feb 1, 2015 | Feb 28, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 28, 2015 | Total Coliform Rule |
| Feb 1, 2015 | Feb 28, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 28, 2015 | Total Coliform Rule |
| Feb 1, 2015 | Feb 28, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 28, 2015 | Total Coliform Rule |
| Jul 1, 2012 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Jul 12, 2012 | Lead and Copper Rule |
| Jul 1, 2012 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Jul 12, 2012 | Lead and Copper Rule |
| Jul 1, 2012 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Jul 12, 2012 | Lead and Copper Rule |
| Nov 1, 2010 | — | Groundwater Rule | Other | No | No | — | — | — | Resolved | May 1, 2012 | Ground Water Rule |
| Nov 1, 2010 | — | Groundwater Rule | Other | No | No | — | — | — | Resolved | May 1, 2012 | Ground Water Rule |
| Nov 1, 2010 | — | Groundwater Rule | Other | No | No | — | — | — | Resolved | May 1, 2012 | Ground Water Rule |
| Nov 1, 2010 | Nov 30, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2010 | Total Coliform Rule |
| Nov 1, 2010 | Nov 30, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2010 | Total Coliform Rule |
| Nov 1, 2010 | Nov 30, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2010 | Total Coliform Rule |
| Nov 1, 2010 | Nov 30, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2010 | Total Coliform Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 10, 2011 | Lead and Copper Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 10, 2011 | Lead and Copper Rule |
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.