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EDGEMONT

South Dakota — Community Water System — PWSID: SD4600114

System Information

PWSIDSD4600114
System NameEDGEMONT
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1979
Last ReportedDec 9, 2025

Location & Contact

StateSouth Dakota
CityEDGEMONT
ZIP Code57735
AddressPO BOX A
OrganizationEDGEMONT
Phone—

Population & Service

Population Served725
Service Connections506

Drinking Water Violations (434)

This water system has 434 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
Oct 20, 2021 — Groundwater Rule TT Yes No — — — Resolved Nov 3, 2022 Ground Water Rule
Oct 20, 2021 — Groundwater Rule TT Yes No — — — Resolved Nov 3, 2022 Ground Water Rule
Sep 5, 2021 — Revised Total Coliform Rule TT Yes No — — — Resolved Nov 2, 2022 Revised Total Coliform Rule
Sep 5, 2021 — Revised Total Coliform Rule TT Yes No — — — Resolved Nov 2, 2022 Revised Total Coliform Rule
Sep 5, 2021 — Revised Total Coliform Rule TT Yes No — — — Resolved Nov 2, 2022 Revised Total Coliform Rule
May 1, 2015 May 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2015 Total Coliform Rule
May 1, 2015 May 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2015 Total Coliform Rule
May 1, 2015 May 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2015 Total Coliform Rule
Mar 1, 2015 Mar 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2015 Total Coliform Rule
Mar 1, 2015 Mar 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2015 Total Coliform Rule
Mar 1, 2015 Mar 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2015 Total Coliform Rule
Jul 1, 2014 Jul 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2014 Total Coliform Rule
Jul 1, 2014 Jul 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2014 Total Coliform Rule
Jul 1, 2014 Sep 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Jul 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2014 Total Coliform Rule
Jun 1, 2014 Jun 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2014 Total Coliform Rule
Jun 1, 2014 Jun 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2014 Total Coliform Rule
Jun 1, 2014 Jun 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2014 Total Coliform Rule
Apr 1, 2014 Jun 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2014 Jun 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Jan 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2014 Total Coliform Rule
Jan 1, 2014 Jan 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2014 Total Coliform Rule
Jan 1, 2014 Jan 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2014 Total Coliform Rule
Jan 1, 2014 Mar 31, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Mar 31, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2013 Dec 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2013 Total Coliform Rule
Dec 1, 2013 Dec 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2013 Total Coliform Rule
Dec 1, 2013 Dec 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2013 Total Coliform Rule
Oct 1, 2013 Dec 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2013 Dec 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Jan 31, 2013 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jan 31, 2013 Total Coliform Rule
Jan 1, 2013 Dec 31, 2013 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Jan 31, 2013 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jan 31, 2013 Total Coliform Rule
Jan 1, 2013 Dec 31, 2013 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2013 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2013 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Jan 31, 2013 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jan 31, 2013 Total Coliform Rule
Jan 1, 2013 Dec 31, 2013 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2013 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Mar 28, 2011 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Jan 24, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Mar 28, 2011 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Jan 24, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2011 Dec 31, 2011 Nickel MR No Yes — — — Resolved Dec 31, 2011 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2011 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2011 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2011 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2011 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2011 Nickel MR No Yes — — — Resolved Dec 31, 2011 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2011 Selenium MR No Yes — 0.05 mg/L — Resolved Dec 31, 2011 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2011 Nickel MR No Yes — — — Resolved Dec 31, 2011 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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