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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	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	3790214	Open	22-AUG-2025	-	No
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	3790212	Returned to Compliance	02-JUL-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	3790213	Returned to Compliance	01-JUL-2025	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	3790211	Open	17-OCT-2024	-	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	3790209	Returned to Compliance	01-JUL-2011	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	3790208	Returned to Compliance	01-OCT-2007	31-DEC-2007	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	301	Known	01-MAY-2001	31-MAY-2001	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	3789297	Returned to Compliance	01-JAN-1997	30-JUN-1997	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2868895	Known	01-FEB-1995	28-FEB-1995	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	2425194	Returned to Compliance	01-JAN-1994	30-JUN-1994	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	2075893	Returned to Compliance	01-OCT-1993	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1453892	Known	01-FEB-1992	29-FEB-1992	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1453792	Known	01-JAN-1992	31-JAN-1992	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
7096120	3790214	SIA	State Violation/Reminder Notice	24-SEP-2025	State	-
7096118	3790213	SIA	State Violation/Reminder Notice	30-JUL-2025	State	-
7096115	3790211	SIE	State Public Notification requested	22-JUL-2025	State	-
7096117	3790212	SIE	State Public Notification requested	03-JUL-2025	State	-
7096112	3790209	SOX	State Compliance achieved	30-APR-2012	State	-
7096108	3790208	SIA	State Violation/Reminder Notice	28-NOV-2007	State	-
7095098	3789297	SOX	State Compliance achieved	09-APR-1998	State	-
6142797	2425194	SOX	State Compliance achieved	20-FEB-1997	State	-
4347595	2868895	SIF	State Public Notification received	20-APR-1995	State	-
3047994	2075893	SOX	State Compliance achieved	30-JUN-1994	State	-
1132192	1453892	SIE	State Public Notification requested	27-MAR-1992	State	-
1131892	1453792	SIE	State Public Notification requested	01-MAR-1992	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 03-EMERGENCY CONN. W/CHICAGO	31667	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 01-MASTER METER CHICAGO	25967	Yes	Consecutive Connection	Surface water	Permanent	Active
CENTRAL STICKNEY SNDST	23451	No	Distribution System/Zone	-	-	Active
IDSE	34716	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45366	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45368	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27110	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29532	No	Sampling Station	-	-	Active
377,000 /10,000 GALLON GROUND STORAGE	31669	No	Storage	-	-	Active
TAP 01 GROUND STORAGE	12699	No	Storage	-	-	Inactive
TP 02-PUMP STATION W/ NA HYPOCHLORITE	31990	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 02-PUMP STATION W/ NA HYPOCHLORITE	31990	Hypochlorination, Post	Disinfection

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