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CASTLEWOOD

South Dakota — Community Water System — PWSID: SD4600002

System Information

PWSIDSD4600002
System NameCASTLEWOOD
System TypeCommunity Water System
Water SourceGround Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1979
Last ReportedDec 9, 2025

Location & Contact

StateSouth Dakota
CityCASTLEWOOD
ZIP Code57223
AddressPO BOX 17
OrganizationCASTLEWOOD
Phone6057932220

Population & Service

Population Served698
Service Connections328

Drinking Water Violations (116)

This water system has 116 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 7, 2021 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Sep 12, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 7, 2021 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Sep 12, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2002 Sep 30, 2002 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2002 Total Coliform Rule
Sep 1, 2002 Sep 30, 2002 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2002 Total Coliform Rule
Sep 1, 2002 Sep 30, 2002 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2002 Total Coliform Rule
Jul 1, 2002 — Consumer Confidence Rule Other No No — — — Resolved Aug 13, 2002 Consumer Confidence Rule
Jul 1, 2002 — Consumer Confidence Rule Other No No — — — Resolved Aug 13, 2002 Consumer Confidence Rule
Jan 1, 1998 Jun 30, 1998 Lead and Copper Rule MR No No — TT — Resolved Jun 30, 1998 Lead and Copper Rule
Jan 1, 1998 Jun 30, 1998 Lead and Copper Rule MR No No — TT — Resolved Jun 30, 1998 Lead and Copper Rule
Jan 1, 1998 Jun 30, 1998 Lead and Copper Rule MR No No — TT — Resolved Jun 30, 1998 Lead and Copper Rule
Jan 1, 1997 Aug 25, 1997 Lead and Copper Rule MR No No — TT — Resolved Aug 25, 1997 Lead and Copper Rule
Jan 1, 1997 Aug 25, 1997 Lead and Copper Rule MR No No — TT — Resolved Aug 25, 1997 Lead and Copper Rule
Jan 1, 1997 Aug 25, 1997 Lead and Copper Rule MR No No — TT — Resolved Aug 25, 1997 Lead and Copper Rule
Jul 13, 1996 Aug 12, 1996 Coliform (TCR) Other No No — 5% of samples — Archived Aug 12, 1996 Total Coliform Rule
Jul 1, 1996 Sep 30, 1996 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Toluene MR No Yes — 1 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Toluene MR No Yes — 1 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Styrene MR No Yes — 0.1 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Styrene MR No Yes — 0.1 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Xylenes, Total MR No Yes — 10 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Sep 30, 1996 Volatile Organic Chemicals
Jul 1, 1996 Sep 30, 1996 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Sep 30, 1996 Volatile Organic 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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