DUQUOIN

Illinois — Community Water System — PWSID: IL1450100

System Information

PWSID	IL1450100
System Name	DUQUOIN
System Type	Community Water System
Water Source	Surface Water Purchased
Activity Status	Active
Owner Type	Local
EPA Region	05
Serves School	No
Wholesaler	No
First Reported	Feb 13, 1981
Last Reported	Dec 4, 2025

Location & Contact

State	Illinois
City	DUQUOIN
ZIP Code	62832
Address	P.O. Box 466
Organization	HALE, RUTH
Phone	618-542-3841

Population & Service

Population Served	7,169
Service Connections	3,039

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
Aug 22, 2025	—	Public Notice	Other	No	No	—	—	—	Resolved	Aug 25, 2025	Public Notice Rule and Revised PN Rule
Aug 22, 2025	—	Public Notice	Other	No	No	—	—	—	Resolved	Aug 25, 2025	Public Notice Rule and Revised PN Rule
Jul 2, 2025	—	LEAD AND COPPER RULE REVISIONS	RPT	No	No	—	—	—	Unaddressed	—	Lead and Copper Rule Revisions
Jul 2, 2025	—	LEAD AND COPPER RULE REVISIONS	RPT	No	No	—	—	—	Unaddressed	—	Lead and Copper Rule Revisions
Jul 1, 2025	Jul 31, 2025	Revised Total Coliform Rule	MON	No	No	—	—	—	Archived	Jul 31, 2025	Revised Total Coliform Rule
Jul 1, 2025	Jul 31, 2025	Chloramine	MR	No	Yes	—	4.0 mg/L	—	Resolved	Jul 31, 2025	Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 17, 2024	—	LEAD AND COPPER RULE REVISIONS	TT	Yes	No	—	—	—	Unaddressed	—	Lead and Copper Rule Revisions
Oct 17, 2024	—	LEAD AND COPPER RULE REVISIONS	TT	Yes	No	—	—	—	Unaddressed	—	Lead and Copper Rule Revisions
Oct 17, 2024	—	LEAD AND COPPER RULE REVISIONS	TT	Yes	No	—	—	—	Unaddressed	—	Lead and Copper Rule Revisions
Jul 1, 2023	Sep 30, 2023	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023	Sep 30, 2023	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023	Sep 30, 2023	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023	Sep 30, 2023	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023	Sep 30, 2023	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023	Sep 30, 2023	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023	Sep 30, 2023	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023	Sep 30, 2023	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Dec 30, 2020	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jan 28, 2021	Lead and Copper Rule
Dec 30, 2020	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jan 28, 2021	Lead and Copper Rule
Jul 1, 2015	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 28, 2015	Consumer Confidence Rule
Jul 1, 2015	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 28, 2015	Consumer Confidence Rule
Feb 1, 1998	Feb 28, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Feb 28, 1998	Total Coliform Rule
Feb 1, 1998	Feb 28, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Feb 28, 1998	Total Coliform Rule
Feb 1, 1998	Feb 28, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Feb 28, 1998	Total Coliform Rule
Feb 1, 1998	Feb 28, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Feb 28, 1998	Total Coliform Rule
Aug 1, 1993	Aug 31, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1993	Total Coliform Rule
Aug 1, 1993	Aug 31, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1993	Total Coliform Rule
Aug 1, 1993	Aug 31, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1993	Total Coliform Rule
Aug 1, 1993	Aug 31, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1993	Total Coliform Rule
Aug 1, 1993	Aug 31, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1993	Total Coliform Rule
Aug 1, 1993	Aug 31, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1993	Total Coliform Rule
Apr 1, 1993	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 27, 1993	Lead and Copper Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
—	—		—	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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