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SIERRA MIDDLE SCHOOL

Colorado — Non-Transient Non-Community — PWSID: CO0218018

System Information

PWSIDCO0218018
System NameSIERRA MIDDLE SCHOOL
System TypeNon-Transient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolYes
WholesalerNo
First ReportedMar 20, 1979
Last ReportedNov 17, 2025

Location & Contact

StateColorado
CityCASTLE ROCK
ZIP Code80109
Address2806 N HWY 85, BLDG A
OrganizationANDERSON, TERRY L
Phone720-618-8309

Population & Service

Population Served750
Service Connections1

Drinking Water Violations (243)

This water system has 243 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 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Oct 25, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Oct 25, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Oct 25, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Oct 25, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Oct 25, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Oct 25, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Dec 31, 2021 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Dec 31, 2021 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Dec 31, 2021 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Oct 1, 2018 Lead and Copper Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Oct 1, 2018 Lead and Copper Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Oct 1, 2018 Lead and Copper Rule
Jan 1, 2017 Dec 31, 2019 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Xylenes, Total MR No Yes — 10 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Benzene MR No Yes — 0.005 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Ethylbenzene MR No Yes — 0.7 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Toluene MR No Yes — 1 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Tetrachloroethylene MR No Yes — 0.005 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Carbon tetrachloride MR No Yes — 0.005 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Trichloroethylene MR No Yes — 0.005 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Styrene MR No Yes — 0.1 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Vinyl chloride MR No Yes — 0.002 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 CHLOROBENZENE MR No Yes — 0.1 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2019 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Archived Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2014 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2014 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2014 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2014 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2014 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2014 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2014 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2014 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2012 Feb 29, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 29, 2012 Total Coliform Rule
Feb 1, 2012 Feb 29, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 29, 2012 Total Coliform Rule
Feb 1, 2012 Feb 29, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 29, 2012 Total Coliform Rule
Jan 1, 2012 Mar 31, 2012 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Mar 31, 2012 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts 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.

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