SIERRA MIDDLE SCHOOL
Colorado — Non-Transient Non-Community — PWSID: CO0218018
System Information
| PWSID | CO0218018 |
| System Name | SIERRA MIDDLE SCHOOL |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Mar 20, 1979 |
| Last Reported | Feb 23, 2026 |
Location & Contact
| State | Colorado |
| City | CASTLE ROCK |
| ZIP Code | 80109 |
| Address | 2806 N HWY 85, BLDG A |
| Organization | ANDERSON, TERRY L |
| Phone | 720-618-8309 |
Population & Service
| Population Served | 750 |
| Service Connections | 1 |
Drinking Water Violations (246)
This water system has 246 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, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.080 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.080 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.060 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.060 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Oct 25, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Oct 25, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Oct 25, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Oct 25, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Oct 25, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Oct 25, 2024 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2018 | — | MR | No | No | — | TT | — | Resolved | Oct 1, 2018 | — | |
| Jan 1, 2018 | — | MR | No | No | — | TT | — | Resolved | Oct 1, 2018 | — | |
| Jan 1, 2018 | — | MR | No | No | — | TT | — | Resolved | Oct 1, 2018 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.6 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.2 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.7 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.07 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.075 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.007 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.07 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 1 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2019 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Feb 1, 2012 | Feb 29, 2012 | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 2012 | — | |
| Feb 1, 2012 | Feb 29, 2012 | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 2012 | — | |
| Feb 1, 2012 | Feb 29, 2012 | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 2012 | — | |
| Jan 1, 2012 | Mar 31, 2012 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2012 | — | |
| Jan 1, 2012 | Mar 31, 2012 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2012 | — |
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.