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The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

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Violations

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Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7118010	Open	01-JUL-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7118004	Returned to Compliance	01-JUL-2004	-	No
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	1551392	Known	01-SEP-1992	30-SEP-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1551492	Known	01-SEP-1992	30-SEP-1992	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1551592	Known	01-SEP-1992	30-SEP-1992	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1261591	Returned to Compliance	21-DEC-1990	20-DEC-1994	Yes
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	788	Known	01-NOV-1986	31-OCT-1989	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	288	Known	01-NOV-1986	31-OCT-1989	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	388	Known	01-NOV-1986	31-OCT-1989	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	588	Known	01-NOV-1986	31-OCT-1989	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	188	Known	01-NOV-1986	31-OCT-1989	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	488	Known	01-NOV-1986	31-OCT-1989	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	988	Known	01-NOV-1986	31-OCT-1989	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	888	Known	01-NOV-1986	31-OCT-1989	No
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Barium	237386	Returned to Compliance	01-JUN-1986	31-MAY-1989	Yes
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Barium	237283	Known	01-JUN-1983	31-MAY-1986	Yes
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Barium	237180	Known	01-JUN-1980	31-MAY-1983	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7117880	Known	30-JUN-1977	29-JUN-1981	No

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Enforcement Actions

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Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1470107	7118010	SIA	State Violation/Reminder Notice	06-AUG-2025	State	-
1470105	7118004	SOX	State Compliance achieved	02-OCT-2004	State	-
1469893	1551392	SIF	State Public Notification received	05-NOV-1992	State	-
1469893	1551492	SIF	State Public Notification received	05-NOV-1992	State	-
1469893	1551592	SIF	State Public Notification received	05-NOV-1992	State	-
1136392	1261591	SOX	State Compliance achieved	05-MAR-1992	State	-
288	988	SIE	State Public Notification requested	30-SEP-1988	State	-
288	888	SIE	State Public Notification requested	30-SEP-1988	State	-
288	788	SIE	State Public Notification requested	30-SEP-1988	State	-
288	588	SIE	State Public Notification requested	30-SEP-1988	State	-
288	488	SIE	State Public Notification requested	30-SEP-1988	State	-
288	388	SIE	State Public Notification requested	30-SEP-1988	State	-
288	288	SIE	State Public Notification requested	30-SEP-1988	State	-
288	188	SIE	State Public Notification requested	30-SEP-1988	State	-
586	237386	SIF	State Public Notification received	30-SEP-1986	State	-
383	237283	SIF	State Public Notification received	30-SEP-1983	State	-
3E80	237180	SIF	State Public Notification received	30-SEP-1980	State	-

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC 06-METER FROM DUPAGE WATER	26030	Yes	Consecutive Connection	Surface water	Permanent	Active
WELL 9 (20723) INACTIVE	20431	Yes	Well	Ground water	Other	Inactive
WELL 8 (20722) ABANDONED	20430	Yes	Well	Ground water	Other	Inactive
WELL 7 (20721) ABANDONED	20429	Yes	Well	Ground water	Other	Inactive
WELL 5 (20720) INACTIVE	20428	Yes	Well	Ground water	Other	Inactive
WELL 2 (20719) ABANDONED	20427	Yes	Well	Ground water	Other	Inactive
CC 07-METER FROM DUPAGE WATER	26031	Yes	Consecutive Connection	Surface water	Permanent	Active
BLOOMINGDALE	23570	No	Distribution System/Zone	-	-	Active
SSS	34594	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46482	No	Distribution System/Zone	-	-	Active
CHILD CARE FACILITY LEAD SAMPLING	46483	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27229	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29651	No	Sampling Station	-	-	Active
ELEV01-200K GALLON ELEVATED TANK	11079	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12124	No	Storage	-	-	Active
GR08-1.0 MG GROUND TANK AT TP08	12722	No	Storage	-	-	Active
GR05-TWO 1.3 MG GROUND TANKS AT TP05	33873	No	Storage	-	-	Active
ELEV02-1.0 MG ELEVATED TANK	45666	No	Storage	-	-	Active
TP 02-WELL 5 (EMERGENCY)	15157	No	Treatment Plant	-	-	Active
TP 04-WELL #9 (EMERGENCY)	15159	No	Treatment Plant	-	-	Active
TP 05-PUMPING STATION #8	15160	No	Treatment Plant	-	-	Active
TP 08-EASTSIDE PS	22807	No	Treatment Plant	-	-	Active
TP 06-GARY PUMPING STATION	32017	No	Treatment Plant	-	-	Active
TP 07-WINSTON PS	32018	No	Treatment Plant	-	-	Active
TP 01-WELL 2 (ABANDONED)	15156	No	Treatment Plant	-	-	Inactive
TP 03-WELL 7 (ABANDONED)	15158	No	Treatment Plant	-	-	Inactive
TP 09-BOOSTER STATION (INACTIVE)	22808	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 02-WELL 5 (EMERGENCY)	15157	Gaseous Chlorination, Pre	Disinfection
TP 02-WELL 5 (EMERGENCY)	15157	Gaseous Chlorination, Pre	Iron removal
TP 04-WELL #9 (EMERGENCY)	15159	Gaseous Chlorination, Pre	Disinfection
TP 05-PUMPING STATION #8	15160	Gaseous Chlorination, Pre	Disinfection
TP 05-PUMPING STATION #8	15160	Gaseous Chlorination, Pre	Iron removal
TP 08-EASTSIDE PS	22807	Gaseous Chlorination, Pre	Disinfection
TP 06-GARY PUMPING STATION	32017	Gaseous Chlorination, Pre	Disinfection
TP 07-WINSTON PS	32018	Gaseous Chlorination, Pre	Disinfection

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