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RIO GRANDE WATER COMPANY

Colorado — Community Water System — PWSID: CO0253860

System Information

PWSIDCO0253860
System NameRIO GRANDE WATER COMPANY
System TypeCommunity Water System
Water SourceGround Water Under Influence
Activity StatusActive
Owner TypePrivate
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMay 20, 1996
Last ReportedNov 17, 2025

Location & Contact

StateColorado
CitySOUTH FORK
ZIP Code81154
Address—
OrganizationGARCIA, MARY GRACE
Phone719-873-9710

Population & Service

Population Served265
Service Connections100

Drinking Water Violations (169)

This water system has 169 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
Jun 22, 2023 — Revised Total Coliform Rule Other No No — — — Resolved Jul 21, 2023 Revised Total Coliform Rule
Jun 22, 2023 — Revised Total Coliform Rule Other No No — — — Resolved Jul 21, 2023 Revised Total Coliform Rule
Jun 22, 2023 — Revised Total Coliform Rule Other No No — — — Resolved Jul 21, 2023 Revised Total Coliform Rule
Nov 1, 2021 — Public Notice Other No No — — — Resolved Dec 8, 2021 Public Notice Rule and Revised PN Rule
Nov 1, 2021 — Public Notice Other No No — — — Resolved Dec 8, 2021 Public Notice Rule and Revised PN Rule
Jul 1, 2019 — Lead and Copper Rule MR No No — TT — Resolved Jan 13, 2022 Lead and Copper Rule
Jul 1, 2019 — Lead and Copper Rule MR No No — TT — Resolved Jan 13, 2022 Lead and Copper Rule
Jul 1, 2019 — Lead and Copper Rule MR No No — TT — Resolved Jan 13, 2022 Lead and Copper Rule
May 1, 2019 May 31, 2019 Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2019 Surface Water Treatment Rule
May 1, 2019 May 31, 2019 Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2019 Surface Water Treatment Rule
May 1, 2019 May 31, 2019 Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2019 Surface Water Treatment Rule
May 1, 2019 May 31, 2019 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2019 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2019 May 31, 2019 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2019 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2019 May 31, 2019 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2019 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2018 May 31, 2018 Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2018 Surface Water Treatment Rule
May 1, 2018 May 31, 2018 Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2018 Surface Water Treatment Rule
May 1, 2018 May 31, 2018 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2018 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2018 May 31, 2018 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2018 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2018 May 31, 2018 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2018 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2018 May 31, 2018 Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2018 Surface Water Treatment Rule
Feb 19, 2018 — Public Notice Other No No — — — Resolved Jul 2, 2018 Public Notice Rule and Revised PN Rule
Feb 19, 2018 — Public Notice Other No No — — — Resolved Jul 2, 2018 Public Notice Rule and Revised PN Rule
Dec 30, 2016 — Lead and Copper Rule MR No No — TT — Resolved Feb 17, 2017 Lead and Copper Rule
Dec 30, 2016 — Lead and Copper Rule MR No No — TT — Resolved Feb 17, 2017 Lead and Copper Rule
Dec 30, 2016 — Lead and Copper Rule MR No No — TT — Resolved Feb 17, 2017 Lead and Copper Rule
Aug 1, 2013 Aug 31, 2013 Surface Water Treatment Rule MR No Yes — — — Resolved Aug 31, 2013 Surface Water Treatment Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2013 Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2013 Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Surface Water Treatment Rule MR No Yes — — — Resolved Aug 31, 2013 Surface Water Treatment Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2013 Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Surface Water Treatment Rule MR No Yes — — — Resolved Aug 31, 2013 Surface Water Treatment Rule
Jul 1, 2013 Sep 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Dec 31, 2012 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Fluoride MR No Yes — 4.0 mg/L — Resolved Dec 31, 2012 Inorganic Chemicals

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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