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GREAT SAND DUNES HQ

Colorado — Non-Transient Non-Community — PWSID: CO0202300

System Information

PWSIDCO0202300
System NameGREAT SAND DUNES HQ
System TypeNon-Transient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypeFederal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 20, 1979
Last ReportedNov 17, 2025

Location & Contact

StateColorado
CityMOSCA
ZIP Code81146
Address11500 HWY 150
OrganizationWALTRIP III, OWEN R
Phone719-378-6373

Population & Service

Population Served1,400
Service Connections16

Drinking Water Violations (51)

This water system has 51 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
Nov 1, 2024 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Nov 4, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2024 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Nov 4, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2024 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Nov 4, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2024 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Nov 4, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 Dec 31, 2024 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Dec 31, 2024 Synthetic Organic Chemicals
Oct 1, 2024 Dec 31, 2024 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Dec 31, 2024 Synthetic Organic Chemicals
Oct 1, 2024 Dec 31, 2024 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Dec 31, 2024 Synthetic Organic Chemicals
Aug 1, 2021 Aug 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2021 Revised Total Coliform Rule
Aug 1, 2021 Aug 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2021 Revised Total Coliform Rule
Aug 1, 2021 Aug 31, 2021 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2021 Revised Total Coliform Rule
Oct 23, 2020 — Lead and Copper Rule MR No No — TT — Resolved Oct 26, 2020 Lead and Copper Rule
Oct 23, 2020 — Lead and Copper Rule MR No No — TT — Resolved Oct 26, 2020 Lead and Copper Rule
Oct 23, 2020 — Lead and Copper Rule MR No No — TT — Resolved Oct 26, 2020 Lead and Copper Rule
Jul 8, 2020 — Public Notice Other No No — — — Resolved Oct 26, 2020 Public Notice Rule and Revised PN Rule
Jul 8, 2020 — Public Notice Other No No — — — Resolved Oct 26, 2020 Public Notice Rule and Revised PN Rule
Nov 1, 2019 Nov 30, 2019 Revised Total Coliform Rule MON No No — — — Resolved Nov 30, 2019 Revised Total Coliform Rule
Nov 1, 2019 Nov 30, 2019 Revised Total Coliform Rule MON No No — — — Resolved Nov 30, 2019 Revised Total Coliform Rule
Nov 1, 2019 Nov 30, 2019 Revised Total Coliform Rule MON No No — — — Resolved Nov 30, 2019 Revised Total Coliform Rule
Oct 1, 2019 Dec 31, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 12, 2019 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2019 Dec 31, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 12, 2019 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2019 Dec 31, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 12, 2019 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019 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, 2019 Dec 31, 2021 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019 Dec 31, 2021 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019 Dec 31, 2021 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019 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, 2019 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 Jan 18, 2018 Lead and Copper Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Jan 18, 2018 Lead and Copper Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Jan 18, 2018 Lead and Copper Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Jan 18, 2018 Lead and Copper Rule
Jan 1, 2011 Dec 31, 2013 Total Polychlorinated Biphenyls (PCB) MR No Yes — 0.0005 mg/L — Resolved Dec 31, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Total Polychlorinated Biphenyls (PCB) MR No Yes — 0.0005 mg/L — Resolved Dec 31, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Total Polychlorinated Biphenyls (PCB) MR No Yes — 0.0005 mg/L — Resolved Dec 31, 2013 Synthetic Organic Chemicals
Dec 1, 2008 Dec 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2008 Total Coliform Rule
Dec 1, 2008 Dec 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2008 Total Coliform Rule
Dec 1, 2008 Dec 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2008 Total Coliform Rule
Oct 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Feb 1, 2007 Lead and Copper Rule
Oct 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Feb 1, 2007 Lead and Copper Rule
Oct 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Feb 1, 2007 Lead and Copper Rule
Oct 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Feb 1, 2007 Lead and Copper Rule
Oct 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Feb 1, 2007 Lead and Copper Rule
Jan 1, 2002 Dec 31, 2004 Barium MR No No — 2 mg/L — Resolved Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Barium MR No No — 2 mg/L — Resolved Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Antimony, Total MR No No — 0.006 mg/L — Resolved Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Antimony, Total MR No No — 0.006 mg/L — Resolved Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Antimony, Total MR No No — 0.006 mg/L — Resolved Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Barium MR No No — 2 mg/L — Resolved Dec 31, 2004 Inorganic Chemicals
Sep 1, 2001 Sep 30, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2001 Total Coliform Rule
Sep 1, 2001 Sep 30, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2001 Total Coliform 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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