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THRALL MTN. PROPERTY OWNERS ASSOCIAT

South Dakota — Community Water System — PWSID: SD4600513

System Information

PWSIDSD4600513
System NameTHRALL MTN. PROPERTY OWNERS ASSOCIAT
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 4, 1980
Last ReportedDec 9, 2025

Location & Contact

StateSouth Dakota
CityBLACK HAWK
ZIP Code57718
AddressPO BOX 761
OrganizationTHRALL MTN. PROPERTY OWNERS ASSOCIAT
Phone6057864366

Population & Service

Population Served70
Service Connections28

Drinking Water Violations (79)

This water system has 79 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
Jul 1, 2004 — Consumer Confidence Rule Other No No — — — Resolved Aug 2, 2004 Consumer Confidence Rule
Jul 1, 2004 — Consumer Confidence Rule Other No No — — — Resolved Aug 2, 2004 Consumer Confidence Rule
Jul 1, 2000 Jul 21, 2000 Consumer Confidence Rule Other No Yes — — — Resolved Jul 21, 2000 Consumer Confidence Rule
Jul 1, 2000 Jul 21, 2000 Consumer Confidence Rule Other No Yes — — — Resolved Jul 21, 2000 Consumer Confidence Rule
Jun 1, 1996 Jun 30, 1996 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 1996 Total Coliform Rule
Jan 1, 1996 Dec 31, 1998 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Glyphosate MR No Yes — 0.7 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Total Polychlorinated Biphenyls (PCB) MR No Yes — 0.0005 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Total Polychlorinated Biphenyls (PCB) MR No Yes — 0.0005 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 2,4-D MR No Yes — 0.07 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 2,4-D MR No Yes — 0.07 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 2,4-D MR No Yes — 0.07 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Toxaphene MR No Yes — 0.003 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Toxaphene MR No Yes — 0.003 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Glyphosate MR No Yes — 0.7 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Glyphosate MR No Yes — 0.7 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Simazine MR No Yes — 0.004 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Simazine MR No Yes — 0.004 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Aldicarb sulfoxide MR No Yes — — — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 LASSO MR No Yes — — — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 LASSO MR No Yes — — — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Carbofuran MR No Yes — 0.04 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Carbofuran MR No Yes — 0.04 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Aldicarb sulfoxide MR No Yes — — — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Aldicarb sulfoxide MR No Yes — — — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Dec 31, 1998 Synthetic Organic Chemicals
Jan 1, 1996 Dec 31, 1998 Aldicarb sulfone MR No Yes — — — Resolved Dec 31, 1998 Synthetic 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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