CITY ON THE HILL
Colorado - Transient Non-Community - PWSID: CO0207122
System Information
| PWSID | CO0207122 |
| System Name | CITY ON THE HILL |
| 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 | Mar 1, 1980 |
| Last Reported | Jun 17, 2026 |
Location & Contact
| State | Colorado |
| City | BOULDER |
| ZIP Code | 80303 |
| Address | 7483 ARAPAHOE ROAD |
| Organization | RATZLAFF, JIMMY |
| Phone | 303-440-3873 |
Population & Service
| Population Served | 82 |
| Service Connections | 2 |
Drinking Water Violations (17)
This water system has 17 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 12, 2026 | - | Other | No | No | - | - | - | Resolved | Feb 25, 2026 | - | |
| Jan 12, 2026 | - | Other | No | No | - | - | - | Resolved | Feb 25, 2026 | - | |
| Jan 12, 2026 | - | Other | No | No | - | - | - | Resolved | Feb 25, 2026 | - | |
| Mar 28, 2021 | - | Other | No | No | - | - | - | Resolved | Apr 19, 2021 | - | |
| Mar 28, 2021 | - | Other | No | No | - | - | - | Resolved | Apr 19, 2021 | - | |
| Aug 1, 2012 | Aug 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2012 | - | |
| Aug 1, 2012 | Aug 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2012 | - | |
| Aug 1, 2012 | Aug 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2012 | - | |
| Mar 1, 2008 | Mar 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2008 | - | |
| Mar 1, 2008 | Mar 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2008 | - | |
| Mar 1, 2008 | Mar 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2008 | - | |
| Mar 1, 2008 | Mar 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2008 | - | |
| Jul 1, 1995 | Sep 30, 1995 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1995 | - | |
| Jul 1, 1995 | Sep 30, 1995 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1995 | - | |
| Jul 1, 1995 | Sep 30, 1995 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1995 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.