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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	3859405	Open	01-JUL-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	3859404	Returned to Compliance	01-JUL-2023	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	3859403	Returned to Compliance	30-DEC-2022	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	3859401	Returned to Compliance	01-JUL-2016	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3859399	Returned to Compliance	01-SEP-2015	30-SEP-2015	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	3859400	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	100	Known	01-SEP-2000	30-SEP-2000	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3859397	Known	01-AUG-1997	31-AUG-1997	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	2227193	Returned to Compliance	01-JAN-1993	-	Yes
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	1913993	Returned to Compliance	07-DEC-1992	-	Yes

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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
6767216	3859405	SIA	State Violation/Reminder Notice	06-SEP-2025	State	-
6767215	3859404	SOX	State Compliance achieved	17-MAY-2024	State	-
6767211	3859403	SIA	State Violation/Reminder Notice	24-JAN-2023	State	-
6767209	3859401	SOX	State Compliance achieved	23-JUN-2017	State	-
6767207	3859399	SIF	State Public Notification received	20-JUN-2016	State	-
6767206	3859400	SIF	State Public Notification received	20-JUN-2016	State	-
90001	100	SIE	State Public Notification requested	05-DEC-2000	State	-
6767198	3859397	SIE	State Public Notification requested	25-OCT-1997	State	-
4924895	2227193	SOX	State Compliance achieved	05-FEB-1995	State	-
576594	1913993	SOX	State Compliance achieved	18-JAN-1994	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
CC03-EMER CONN WITH CHICAGO	39764	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 01-REICH PS CHGO MTR TRNMS MN	25880	Yes	Consecutive Connection	Surface water	Permanent	Active
CC02-30" LINE FROM CHICAGO TO HARKER PS	40741	Yes	Consecutive Connection	Surface water	Permanent	Active
OAK LAWN	23386	No	Distribution System/Zone	-	-	Active
IDSE	34947	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45233	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45234	No	Distribution System/Zone	-	-	Active
PF 05-BOOSTER STATION 5288 W 105TH ST	39765	No	Pump Facility	-	-	Active
PF 04 BOOSTER STATION 16792 S CICERO	39766	No	Pump Facility	-	-	Active
GENERIC FINISHED SAMPLING STATION	27045	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29467	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47072	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47073	No	Sampling Station	-	-	Active
ELEV1-1.0 MG ELEVATED TANK	10992	No	Storage	-	-	Active
TAP 01 GROUND STORAGE	12636	No	Storage	-	-	Active
TAP 02 GROUND STORAGE	12637	No	Storage	-	-	Active
ELEV2-1.0 MG ELEVATED TANK	44512	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12051	No	Storage	-	-	Inactive
TP 01-REICH PS CHGO MTR TRNMS MN	31914	No	Treatment Plant	-	-	Active
TP 02-HARKER PS CHGO TRNMS	31915	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-REICH PS CHGO MTR TRNMS MN	31914	Gaseous Chlorination, Pre	Disinfection
TP 02-HARKER PS CHGO TRNMS	31915	Gaseous Chlorination, Pre	Disinfection

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