MILLS SPRING RANCH
Wyoming - Transient Non-Community - PWSID: WY5600631
System Information
| PWSID | WY5600631 |
| System Name | MILLS SPRING RANCH |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | Wyoming |
| City | CASPER |
| ZIP Code | 82601 |
| Address | 8000 Tower Hill Road |
| Organization | LEARNED, BRENT |
| Phone | 307-215-8938 |
Population & Service
| Population Served | 200 |
| Service Connections | 8 |
Drinking Water Violations (63)
This water system has 63 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2018 | - | |
| Aug 1, 2017 | Aug 31, 2017 | MON | No | Yes | - | - | - | Archived | Aug 31, 2017 | - | |
| Aug 1, 2017 | Aug 31, 2017 | MON | No | Yes | - | - | - | Archived | Aug 31, 2017 | - | |
| Aug 1, 2017 | Aug 31, 2017 | MON | No | Yes | - | - | - | Archived | Aug 31, 2017 | - | |
| Jul 1, 2017 | Jul 31, 2017 | MON | No | Yes | - | - | - | Archived | Jul 31, 2017 | - | |
| Jul 1, 2017 | Jul 31, 2017 | MON | No | Yes | - | - | - | Archived | Jul 31, 2017 | - | |
| Jul 1, 2017 | Jul 31, 2017 | MON | No | Yes | - | - | - | Archived | Jul 31, 2017 | - | |
| Jan 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | Jul 11, 2017 | - | |
| Sep 1, 2016 | Sep 30, 2016 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2016 | - | |
| Aug 1, 2016 | Aug 31, 2016 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2016 | - | |
| Jul 1, 2016 | Sep 30, 2016 | MR | No | Yes | - | 1 mg/L | - | Resolved | Sep 30, 2016 | - | |
| Jul 1, 2016 | Jul 31, 2016 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2016 | - | |
| Jul 1, 2016 | Sep 30, 2016 | MR | No | Yes | - | 1 mg/L | - | Resolved | Sep 30, 2016 | - | |
| Jul 1, 2016 | Sep 30, 2016 | MR | No | Yes | - | 1 mg/L | - | Resolved | Sep 30, 2016 | - | |
| Jun 1, 2016 | Jun 30, 2016 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2016 | - | |
| Jun 1, 2016 | Jun 30, 2016 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2016 | - | |
| Apr 1, 2016 | Jun 30, 2016 | MR | No | Yes | - | 1 mg/L | - | Resolved | Jun 30, 2016 | - | |
| Apr 1, 2016 | Jun 30, 2016 | MR | No | Yes | - | 1 mg/L | - | Resolved | Jun 30, 2016 | - | |
| Apr 1, 2016 | Jun 30, 2016 | MR | No | Yes | - | 1 mg/L | - | Resolved | Jun 30, 2016 | - | |
| Apr 1, 2016 | Jun 30, 2016 | MR | No | Yes | - | 1 mg/L | - | Resolved | Jun 30, 2016 | - | |
| Apr 1, 2015 | Jun 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2015 | - | |
| Apr 1, 2015 | Jun 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2015 | - | |
| Jan 1, 2015 | Dec 31, 2015 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2015 | - | |
| Jan 1, 2015 | Dec 31, 2015 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2015 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | No | - | 10 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | No | - | 10 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 2007 | - | |
| Aug 1, 2004 | Aug 31, 2004 | MR | No | No | - | 5% of samples | - | Archived | Aug 31, 2004 | - | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 2004 | - | |
| Jul 1, 2003 | Sep 30, 2003 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 2003 | - | |
| Apr 1, 2003 | Jun 30, 2003 | MR | No | No | - | 5% of samples | - | Archived | Jun 30, 2003 | - | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | No | - | 10 mg/L | - | Resolved | Dec 31, 2003 | - | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | No | - | 10 mg/L | - | Resolved | Dec 31, 2003 | - | |
| Apr 1, 2002 | Jun 30, 2002 | MR | No | No | - | 5% of samples | - | Archived | Jun 30, 2002 | - | |
| Jul 1, 2001 | Sep 30, 2001 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2001 | - | |
| Jul 1, 2000 | Sep 30, 2000 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 2000 | - | |
| Jan 1, 2000 | Dec 31, 2000 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2000 | - | |
| Jan 1, 2000 | Dec 31, 2000 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2000 | - | |
| Jan 1, 2000 | Dec 31, 2000 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2000 | - | |
| Jul 1, 1999 | Sep 30, 1999 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1999 | - | |
| Jan 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Jan 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Jan 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1999 | - |
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.