DAVE JOHNSTON POWER PLANT
Wyoming — Non-Transient Non-Community — PWSID: WY5600291
System Information
| PWSID | WY5600291 |
| System Name | DAVE JOHNSTON POWER PLANT |
| System Type | Non-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 | GLENROCK |
| ZIP Code | 82637 |
| Address | 1591 Tank Farm Road |
| Organization | SAUL, ANNE |
| Phone | 307-995-5055 |
Population & Service
| Population Served | 165 |
| Service Connections | 3 |
Drinking Water Violations (39)
This water system has 39 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, 2022 | Jun 30, 2022 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2016 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2016 | — | |
| Jan 1, 2016 | Mar 31, 2016 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2016 | — | |
| Jan 1, 2016 | Mar 31, 2016 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2016 | — | |
| Nov 1, 2015 | Nov 30, 2015 | TT | Yes | No | — | — | — | Resolved | Nov 30, 2015 | — | |
| Nov 1, 2015 | Nov 30, 2015 | TT | Yes | No | — | — | — | Resolved | Nov 30, 2015 | — | |
| Nov 1, 2015 | Nov 30, 2015 | TT | Yes | No | — | — | — | Resolved | Nov 30, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | Yes | — | — | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | TT | Yes | No | — | — | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | TT | Yes | No | — | — | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | TT | Yes | No | — | — | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | Yes | — | — | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2015 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2015 | — | |
| Oct 1, 2013 | Oct 31, 2013 | TT | Yes | No | — | — | — | Resolved | Oct 31, 2013 | — | |
| Oct 1, 2013 | Oct 31, 2013 | TT | Yes | No | — | — | — | Resolved | Oct 31, 2013 | — | |
| Oct 1, 2013 | Oct 31, 2013 | TT | Yes | No | — | — | — | Resolved | Oct 31, 2013 | — | |
| Jan 1, 2011 | Mar 31, 2011 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2011 | — | |
| Jan 1, 2011 | Mar 31, 2011 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2011 | — | |
| Oct 1, 2010 | Dec 31, 2010 | MCL | Yes | No | .0983 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2010 | — | |
| Oct 1, 2010 | Dec 31, 2010 | MCL | Yes | No | .0983 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2010 | — | |
| Jul 1, 2010 | Sep 30, 2010 | MCL | Yes | No | .1135 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2010 | — | |
| Jul 1, 2010 | Sep 30, 2010 | MCL | Yes | No | .1135 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | .102 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2010 | — | |
| Apr 1, 2005 | Jun 30, 2005 | MCL | Yes | No | .091 | 0.080 mg/L | .08 | Resolved | Jun 30, 2005 | — | |
| Apr 1, 2005 | Jun 30, 2005 | MCL | Yes | No | .091 | 0.080 mg/L | .08 | Resolved | Jun 30, 2005 | — | |
| Apr 1, 2005 | Jun 30, 2005 | MCL | Yes | No | .091 | 0.080 mg/L | .08 | Resolved | Jun 30, 2005 | — | |
| Apr 1, 2005 | Jun 30, 2005 | MCL | Yes | No | .069 | 0.060 mg/L | .06 | Resolved | Jun 30, 2005 | — | |
| Apr 1, 2005 | Jun 30, 2005 | MCL | Yes | No | .069 | 0.060 mg/L | .06 | Resolved | Jun 30, 2005 | — | |
| Apr 1, 2005 | Jun 30, 2005 | MCL | Yes | No | .069 | 0.060 mg/L | .06 | Resolved | Jun 30, 2005 | — | |
| Apr 1, 2005 | Jun 30, 2005 | MCL | Yes | No | .069 | 0.060 mg/L | .06 | Resolved | Jun 30, 2005 | — | |
| Apr 1, 2005 | Jun 30, 2005 | MCL | Yes | No | .069 | 0.060 mg/L | .06 | Resolved | Jun 30, 2005 | — | |
| Dec 1, 1993 | Dec 31, 1993 | MR | No | No | — | 5% of samples | — | Archived | Dec 31, 1993 | — | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | — | 10 mg/L | — | Archived | Sep 30, 1993 | — | |
| Jul 1, 1991 | Jul 31, 1991 | MR | No | No | — | 5% of samples | — | Archived | Jul 31, 1991 | — | |
| Jan 1, 1991 | Jan 31, 1991 | MR | No | No | — | 5% of samples | — | Archived | Jan 31, 1991 | — |
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.