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 | Mar 26, 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 (34)
This water system has 34 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 | — | Other | No | No | — | — | — | Resolved | Jul 27, 2020 | — | |
| Jul 1, 2020 | — | Other | No | No | — | — | — | Resolved | Jul 27, 2020 | — | |
| Feb 1, 2015 | Feb 28, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 28, 2015 | — | |
| Feb 1, 2015 | Feb 28, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 28, 2015 | — | |
| Feb 1, 2015 | Feb 28, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 28, 2015 | — | |
| Feb 1, 2015 | Feb 28, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 28, 2015 | — | |
| Jul 1, 2012 | — | TT | Yes | No | — | TT | — | Resolved | Jul 12, 2012 | — | |
| Jul 1, 2012 | — | TT | Yes | No | — | TT | — | Resolved | Jul 12, 2012 | — | |
| Jul 1, 2012 | — | TT | Yes | No | — | TT | — | Resolved | Jul 12, 2012 | — | |
| Nov 1, 2010 | — | Other | No | No | — | — | — | Resolved | May 1, 2012 | — | |
| Nov 1, 2010 | — | Other | No | No | — | — | — | Resolved | May 1, 2012 | — | |
| Nov 1, 2010 | Nov 30, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2010 | — | |
| Nov 1, 2010 | Nov 30, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2010 | — | |
| Nov 1, 2010 | Nov 30, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2010 | — | |
| Nov 1, 2010 | Nov 30, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2010 | — | |
| Nov 1, 2010 | Nov 30, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2010 | — | |
| Nov 1, 2010 | — | Other | No | No | — | — | — | Resolved | May 1, 2012 | — | |
| Feb 1, 2010 | Feb 28, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2010 | — | |
| Feb 1, 2010 | Feb 28, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2010 | — | |
| Feb 1, 2010 | Feb 28, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2010 | — | |
| Feb 1, 2010 | Feb 28, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2010 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Feb 10, 2011 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Feb 10, 2011 | — | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2007 | — | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2007 | — | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2007 | — | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2007 | — | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2007 | — | |
| Jan 1, 2007 | Jan 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2007 | — | |
| Jan 1, 2007 | Jan 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2007 | — | |
| Jan 1, 2007 | Jan 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2007 | — | |
| Apr 1, 2006 | Apr 30, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2006 | — | |
| Apr 1, 2006 | Apr 30, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2006 | — | |
| Apr 1, 2006 | Apr 30, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2006 | — |
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.