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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	7109308	Open	01-JUL-2025	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	7109307	Returned to Compliance	30-DEC-2020	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7109306	Returned to Compliance	01-JUL-2016	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	3618494	Returned to Compliance	01-OCT-1994	-	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7108980	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
4744010	7109308	SIA	State Violation/Reminder Notice	08-SEP-2025	State	-
4744009	7109307	SOX	State Compliance achieved	02-FEB-2021	State	-
4744007	7109306	SOX	State Compliance achieved	01-AUG-2016	State	-
4743595	3618494	SOX	State Compliance achieved	29-JUN-1995	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 01-CONNECTION TO OAK LAWN	25818	Yes	Consecutive Connection	Surface water	Permanent	Active
COUNTRY CLUB HILLS	23330	No	Distribution System/Zone	-	-	Active
IDSE	34724	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45656	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45657	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	26989	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29411	No	Sampling Station	-	-	Active
(1-2) 2.0 MG GROUND STORAGE TANK	44809	No	Storage	-	-	Active
(2-2) 2.0 MG GROUND STORAGE TANK	44810	No	Storage	-	-	Active
500 K ELEVATED TANK	44811	No	Storage	-	-	Active
200 K SOUTH ELEVATED TANK	44812	No	Storage	-	-	Active
200 K NOB HILL ELEVATED TANK	44813	No	Storage	-	-	Active
DISTRIBUTION ELEVATED STORAGE	10949	No	Storage	-	-	Inactive
DISTRIBUTION GROUND STORAGE	12005	No	Storage	-	-	Inactive
TP 01-183RD STREET PUMP STATION	31849	No	Treatment Plant	-	-	Active
TP04-NA HYPOCHLORITE FOR SOUTH TOWER	40896	No	Treatment Plant	-	-	Active
TP05-NA HYPOCHLORITE FOR NOB HILL TOWER	40897	No	Treatment Plant	-	-	Active
TP 02-PUMPING STATION WELL NO 1	22721	No	Treatment Plant	-	-	Inactive
TP 03-PUMPING STATION WELL NO4	22722	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-183RD STREET PUMP STATION	31849	Gaseous Chlorination, Pre	Disinfection
TP04-NA HYPOCHLORITE FOR SOUTH TOWER	40896	Hypochlorination, Post	Disinfection
TP05-NA HYPOCHLORITE FOR NOB HILL TOWER	40897	Hypochlorination, Post	Disinfection

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