DUQUOIN

Illinois — Community Water System — PWSID: IL1450100

System Information

PWSIDIL1450100
System NameDUQUOIN
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1981
Last ReportedFeb 26, 2026

Location & Contact

StateIllinois
CityDUQUOIN
ZIP Code62832
AddressP.O. Box 466
OrganizationHALE, RUTH
Phone618-542-3841

Population & Service

Population Served7,169
Service Connections3,039

Drinking Water Violations (63)

This water system has 63 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
Aug 22, 2025 Other No No Resolved Aug 25, 2025
Aug 22, 2025 Other No No Resolved Aug 25, 2025
Jul 2, 2025 RPT No No Resolved Dec 11, 2025
Jul 2, 2025 RPT No No Resolved Dec 11, 2025
Jul 2, 2025 RPT No No Resolved Dec 11, 2025
Jul 2, 2025 RPT No No Resolved Dec 11, 2025
Jul 1, 2025 Jul 31, 2025 MR No Yes 4.0 mg/L Resolved Jul 31, 2025
Jul 1, 2025 Jul 31, 2025 MON No No Resolved Jul 31, 2025
Jul 1, 2025 Jul 31, 2025 MON No No Resolved Jul 31, 2025
Jul 1, 2025 Jul 31, 2025 MON No No Resolved Jul 31, 2025
Jul 1, 2025 Jul 31, 2025 MR No Yes 4.0 mg/L Resolved Jul 31, 2025
Jul 1, 2025 Jul 31, 2025 MR No Yes 4.0 mg/L Resolved Jul 31, 2025
Jul 1, 2025 Jul 31, 2025 MR No Yes 4.0 mg/L Resolved Jul 31, 2025
Jul 1, 2025 Jul 31, 2025 MON No No Resolved Jul 31, 2025
Oct 17, 2024 TT Yes No Unaddressed
Oct 17, 2024 TT Yes No Unaddressed
Oct 17, 2024 TT Yes No Unaddressed
Jul 1, 2023 Sep 30, 2023 MR No Yes 0.080 mg/L Resolved Sep 30, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 0.080 mg/L Resolved Sep 30, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 0.080 mg/L Resolved Sep 30, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 0.060 mg/L Resolved Sep 30, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 0.060 mg/L Resolved Sep 30, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 0.060 mg/L Resolved Sep 30, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 0.060 mg/L Resolved Sep 30, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 0.080 mg/L Resolved Sep 30, 2023
Dec 30, 2020 MR No No TT Resolved Jan 28, 2021
Dec 30, 2020 MR No No TT Resolved Jan 28, 2021
Jul 1, 2015 Other No No Resolved Jul 28, 2015
Jul 1, 2015 Other No No Resolved Jul 28, 2015
Feb 1, 1998 Feb 28, 1998 MCL Yes No 5% of samples Archived Feb 28, 1998
Feb 1, 1998 Feb 28, 1998 MCL Yes No 5% of samples Archived Feb 28, 1998
Feb 1, 1998 Feb 28, 1998 MCL Yes No 5% of samples Archived Feb 28, 1998
Feb 1, 1998 Feb 28, 1998 MCL Yes No 5% of samples Archived Feb 28, 1998
Aug 1, 1993 Aug 31, 1993 MCL Yes No 5% of samples Archived Aug 31, 1993
Aug 1, 1993 Aug 31, 1993 MCL Yes No 5% of samples Archived Aug 31, 1993
Aug 1, 1993 Aug 31, 1993 MCL Yes No 5% of samples Archived Aug 31, 1993
Aug 1, 1993 Aug 31, 1993 MCL Yes No 5% of samples Archived Aug 31, 1993
Aug 1, 1993 Aug 31, 1993 MCL Yes No 5% of samples Archived Aug 31, 1993
Aug 1, 1993 Aug 31, 1993 MCL Yes No 5% of samples Archived Aug 31, 1993
Apr 1, 1993 MR No No TT Resolved Sep 27, 1993
Sep 1, 1992 Sep 30, 1992 MCL Yes No 5% of samples Archived Sep 30, 1992
Sep 1, 1992 Sep 30, 1992 MR No No 5% of samples Archived Sep 30, 1992
Sep 1, 1992 Sep 30, 1992 MCL Yes No 5% of samples Archived Sep 30, 1992
Sep 1, 1992 Sep 30, 1992 MCL Yes No 5% of samples Archived Sep 30, 1992
Sep 1, 1992 Sep 30, 1992 MCL Yes No 5% of samples Archived Sep 30, 1992
Sep 1, 1992 Sep 30, 1992 MR No No 5% of samples Archived Sep 30, 1992
No No
No No
No No
No No

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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