TOMAHAWK RANCH
Colorado — Transient Non-Community — PWSID: CO0247014
System Information
| PWSID | CO0247014 |
| System Name | TOMAHAWK 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 | Jan 24, 1981 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | Colorado |
| City | WINDSOR |
| ZIP Code | 80550 |
| Address | 7352 GREENRIDGE RD UNIT A2 |
| Organization | DIBBLE, SEAN D |
| Phone | 406-361-5633 |
Population & Service
| Population Served | 216 |
| Service Connections | 8 |
Drinking Water Violations (20)
This water system has 20 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 16, 2021 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Sep 1, 2021 | Ground Water Rule |
| Jul 16, 2021 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Sep 1, 2021 | Ground Water Rule |
| Jul 16, 2021 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Sep 1, 2021 | Ground Water Rule |
| Feb 17, 2021 | — | Revised Total Coliform Rule | Other | No | No | — | — | — | Resolved | Feb 17, 2021 | Revised Total Coliform Rule |
| Feb 17, 2021 | — | Revised Total Coliform Rule | Other | No | No | — | — | — | Resolved | Feb 17, 2021 | Revised Total Coliform Rule |
| Feb 17, 2021 | — | Revised Total Coliform Rule | Other | No | No | — | — | — | Resolved | Feb 17, 2021 | Revised Total Coliform Rule |
| Oct 1, 2014 | Dec 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | Total Coliform Rule |
| Oct 1, 2014 | Dec 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | Total Coliform Rule |
| Oct 1, 2014 | Dec 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | Total Coliform Rule |
| Oct 1, 2014 | Dec 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | Total Coliform Rule |
| Jul 1, 2011 | Sep 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2011 | Total Coliform Rule |
| Jul 1, 2011 | Sep 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2011 | Total Coliform Rule |
| Jul 1, 2011 | Sep 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2011 | Total Coliform Rule |
| Jan 1, 2005 | Dec 31, 2005 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2005 | Nitrate Rule |
| Jan 1, 2005 | Dec 31, 2005 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2005 | Nitrate Rule |
| Jan 1, 2005 | Dec 31, 2005 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2005 | Nitrate Rule |
| Jan 1, 2005 | Dec 31, 2005 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2005 | Nitrate Rule |
| Jan 1, 1993 | Dec 31, 1993 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1993 | Nitrate Rule |
| Jan 1, 1993 | Dec 31, 1993 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1993 | Nitrate Rule |
| Jan 1, 1993 | Dec 31, 1993 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1993 | Nitrate 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.