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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	1914300	Open	01-JUL-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1914298	Returned to Compliance	01-JUL-2022	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1914296	Returned to Compliance	01-MAR-2022	31-MAY-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1914297	Returned to Compliance	01-MAR-2022	31-MAY-2022	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	1914295	Returned to Compliance	30-DEC-2020	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	1914294	Returned to Compliance	01-JUL-2019	-	No
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	1914293	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
162408	1914300	SIA	State Violation/Reminder Notice	06-SEP-2025	State	-
162406	1914297	SIF	State Public Notification received	20-JUN-2023	State	-
162406	1914296	SIF	State Public Notification received	20-JUN-2023	State	-
162401	1914298	SIA	State Violation/Reminder Notice	18-JUL-2022	State	-
162398	1914295	SOX	State Compliance achieved	19-JAN-2021	State	-
162396	1914294	SOX	State Compliance achieved	05-JUL-2020	State	-
162394	1914293	SOX	State Compliance achieved	10-NOV-1993	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-TR MN SO PS RES CL HSP DISTR SYST	25889	Yes	Consecutive Connection	Surface water	Permanent	Active
CC02-CHICAGO CONNECTION TO CENTRAL PS	40755	Yes	Consecutive Connection	Surface water	Permanent	Active
PARK RIDGE	23396	No	Distribution System/Zone	-	-	Active
SSS	34667	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45960	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45961	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27055	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29477	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47084	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47085	No	Sampling Station	-	-	Active
1.0 MILLION GALLON ELEVATED STORAGE	10997	No	Storage	-	-	Active
TAP 01 GROUND STORAGE 4 MG	12643	No	Storage	-	-	Active
TAP 02 GROUND STORAGE 10.1 MG	33052	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12058	No	Storage	-	-	Inactive
TP 02-CENTRAL PUMPING STATION	22762	No	Treatment Plant	-	-	Active
TP 01-SOUTH PUMPING STATION	31926	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 02-CENTRAL PUMPING STATION	22762	Gaseous Chlorination, Pre	Disinfection
TP 01-SOUTH PUMPING STATION	31926	Gaseous Chlorination, Pre	Disinfection

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