Vehicle Safety
Recalls Search 320,000+ NHTSA safety recalls Complaints 2.1M+ consumer safety complaints TSBs 4.7M technical service bulletins VIN Lookup Decode any vehicle VIN instantly OBD Codes 12,000+ diagnostic trouble codes Fuel Economy EPA MPG data for all vehicles Safety Ratings 11,700+ NHTSA crash test ratings Investigations 5,300+ NHTSA defect investigations Statistics Recall trends & safety analysis
Consumer Safety
Product Safety 9,700+ CPSC product recalls Food Safety 28,600+ FDA food recalls Pet Safety 1.3M FDA animal adverse events Drug Safety 17,500+ FDA drug recalls Device Safety 38,400+ FDA device recalls Workplace Safety 102,900+ OSHA injury reports Brand History Cross-category recall lookup by company
Infrastructure
Bridge Safety 624,000 bridge inspections Aviation Safety 30,000+ NTSB aviation events Dam Safety 92,600 dam safety records Water Safety 433,000+ public water systems Railroad Safety 438,000+ rail crossings Pipeline Safety 8,800+ pipeline incidents
Public Health
Nursing Homes 14,700 CMS rated facilities Environmental 80,000+ hazardous sites & releases

COPPER OAKS I

South Dakota — Community Water System — PWSID: SD4602136

System Information

PWSIDSD4602136
System NameCOPPER OAKS I
System TypeCommunity Water System
Water SourceGround Water Purchased
Activity StatusActive
Owner TypePrivate
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 11, 1994
Last ReportedDec 9, 2025

Location & Contact

StateSouth Dakota
CityNEW UNDERWOOD
ZIP Code57761
Address824 S. A AVE
OrganizationCOPPER OAKS I
Phone—

Population & Service

Population Served64
Service Connections23

Drinking Water Violations (40)

This water system has 40 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, 2024 Mar 31, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 29, 2023 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Apr 16, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 29, 2023 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Apr 16, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Oct 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2023 Revised Total Coliform Rule
Oct 1, 2023 Oct 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2023 Revised Total Coliform Rule
Oct 1, 2023 Oct 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2023 Revised Total Coliform Rule
Feb 1, 2015 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Mar 31, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2015 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Mar 31, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 1998 Dec 31, 1998 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 1998 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 1998 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 1998 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.

Browse All Water Systems Water Safety Stats Water Safety Home
Browse All Water Systems Water Systems in South Dakota