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JEFFERSON

South Dakota — Community Water System — PWSID: SD4600060

System Information

PWSIDSD4600060
System NameJEFFERSON
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
CityJEFFERSON
ZIP Code57038
AddressPO BOX 276
OrganizationJEFFERSON
Phone6059665838

Population & Service

Population Served475
Service Connections235

Drinking Water Violations (57)

This water system has 57 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
Feb 1, 2014 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Apr 14, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2014 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Apr 14, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2010 Sep 30, 2010 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2010 Total Coliform Rule
Sep 1, 2010 Sep 30, 2010 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2010 Total Coliform Rule
Sep 1, 2010 Sep 30, 2010 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2010 Total Coliform Rule
Dec 2, 2004 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved May 19, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 2, 2004 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved May 19, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2000 May 31, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2000 Total Coliform Rule
May 1, 2000 May 31, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2000 Total Coliform Rule
May 1, 2000 May 31, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2000 Total Coliform Rule
Oct 1, 1994 Oct 31, 1994 Coliform (TCR) MR No Yes — 5% of samples — Archived Oct 31, 1994 Total Coliform Rule
Oct 1, 1994 Oct 31, 1994 Coliform (TCR) MR No Yes — 5% of samples — Archived Oct 31, 1994 Total Coliform Rule
Jul 1, 1994 Sep 30, 1994 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Toluene MR No Yes — 1 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Toluene MR No Yes — 1 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Styrene MR No Yes — 0.1 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Styrene MR No Yes — 0.1 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Jul 1, 1994 Sep 30, 1994 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1994 Volatile Organic Chemicals
Dec 1, 1993 Dec 31, 1993 Coliform (TCR) MR No Yes — 5% of samples — Archived Dec 31, 1993 Total Coliform Rule
Dec 1, 1993 Dec 31, 1993 Coliform (TCR) MR No Yes — 5% of samples — Archived Dec 31, 1993 Total Coliform Rule
Jan 1, 1991 Jan 31, 1991 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jan 31, 1991 Total Coliform Rule
Jan 10, 1990 Jan 9, 1993 Cadmium MR No Yes — 0.005 mg/L — Resolved Jan 9, 1993 Inorganic Chemicals
Jan 10, 1990 Jan 9, 1993 Cadmium MR No Yes — 0.005 mg/L — Resolved Jan 9, 1993 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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