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DEER MOUNTAIN SANITARY DISTRICT

South Dakota — Community Water System — PWSID: SD4600549

System Information

PWSIDSD4600549
System NameDEER MOUNTAIN SANITARY DISTRICT
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 4, 1980
Last ReportedDec 9, 2025

Location & Contact

StateSouth Dakota
CityLEAD
ZIP Code57754
Address1204 WASHINGTON
OrganizationDEER MOUNTAIN SANITARY DISTRICT
Phone—

Population & Service

Population Served125
Service Connections100

Drinking Water Violations (239)

This water system has 239 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, 2018 Mar 31, 2018 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 2018 Nitrate Rule
Jan 1, 2018 Mar 31, 2018 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 2018 Nitrate Rule
Jun 1, 2015 — Long Term 2 Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Jul 21, 2015 Long Term 2 Enhanced Surface Water Treatment Rule
Jun 1, 2015 — Long Term 2 Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Jul 21, 2015 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2014 Mar 31, 2014 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 2014 Nitrate Rule
Jan 1, 2014 Mar 31, 2014 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 2014 Nitrate Rule
Apr 9, 2013 — Public Notice Other No No — — — Resolved Jul 1, 2013 Public Notice Rule and Revised PN Rule
Mar 3, 2013 — Public Notice Other No No — — — Resolved Jul 1, 2013 Public Notice Rule and Revised PN Rule
Mar 1, 2013 Mar 31, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Mar 1, 2013 Mar 31, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Mar 1, 2013 Mar 31, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Feb 5, 2013 — Public Notice Other No No — — — Resolved Jul 1, 2013 Public Notice Rule and Revised PN Rule
Feb 5, 2013 — Public Notice Other No No — — — Resolved Jul 1, 2013 Public Notice Rule and Revised PN Rule
Feb 1, 2013 Feb 28, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2013 Total Coliform Rule
Feb 1, 2013 Feb 28, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Feb 28, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Feb 1, 2013 Feb 28, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Feb 28, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Feb 1, 2013 Feb 28, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Feb 28, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Feb 1, 2013 Feb 28, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2013 Total Coliform Rule
Feb 1, 2013 Feb 28, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2013 Total Coliform Rule
Feb 1, 2013 Feb 28, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Feb 28, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Feb 1, 2013 Feb 28, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Feb 28, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Feb 1, 2013 Feb 28, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2013 Total Coliform Rule
Jan 6, 2013 — Public Notice Other No No — — — Resolved Jul 1, 2013 Public Notice Rule and Revised PN Rule
Jan 6, 2013 — Public Notice Other No No — — — Resolved Jul 1, 2013 Public Notice Rule and Revised PN Rule
Jan 1, 2013 Mar 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Mar 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Mar 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Jan 31, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jan 31, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jan 1, 2013 Jan 31, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jan 31, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jan 1, 2013 Jan 31, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jan 31, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jan 1, 2013 Jan 31, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jan 31, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jan 1, 2013 Jan 31, 2013 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jan 31, 2013 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jan 1, 2013 Mar 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2012 Dec 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2012 Dec 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2012 Dec 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2012 Dec 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2012 Dec 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Oct 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Jul 1, 2013 Consumer Confidence Rule
Oct 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Jul 1, 2013 Consumer Confidence Rule
Oct 1, 2012 Oct 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Oct 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Jul 1, 2013 Consumer Confidence Rule
Oct 1, 2012 Oct 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Oct 1, 2012 Oct 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Oct 1, 2012 Oct 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Oct 1, 2012 Oct 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Aug 1, 2012 Sep 30, 2012 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2012 Sep 30, 2012 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Sep 30, 2012 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 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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