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BLACK HAWK WATER USER DISTRICT

South Dakota — Community Water System — PWSID: SD4600043

System Information

PWSIDSD4600043
System NameBLACK HAWK WATER USER DISTRICT
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
CityBLACK HAWK
ZIP Code57718
AddressPO BOX 476
OrganizationBLACK HAWK WATER USER DISTRICT
Phone6057875777

Population & Service

Population Served4,500
Service Connections1,538

Drinking Water Violations (93)

This water system has 93 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, 2017 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved May 15, 2017 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2017 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved May 15, 2017 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 26, 2015 — E. COLI MR No Yes — — — Resolved Aug 11, 2015 Ground Water Rule
Jul 1, 2015 Jul 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2015 Total Coliform Rule
Jul 1, 2015 Jul 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2015 Total Coliform Rule
Jul 1, 2015 Jul 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2015 Total Coliform Rule
Feb 1, 2012 Feb 29, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Feb 29, 2012 Total Coliform Rule
Feb 1, 2012 Feb 29, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Feb 29, 2012 Total Coliform Rule
Feb 1, 2012 Feb 29, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Feb 29, 2012 Total Coliform Rule
Aug 1, 2005 Aug 31, 2005 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2005 Total Coliform Rule
Aug 1, 2005 Aug 31, 2005 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2005 Total Coliform Rule
Aug 1, 2005 Aug 31, 2005 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2005 Total Coliform Rule
Jan 1, 1999 Dec 31, 1999 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 1999 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 1999 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 1999 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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