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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
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	5487910	Open	02-JUL-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	5487912	Open	01-JUL-2025	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5487911	Returned to Compliance	01-APR-2025	30-JUN-2025	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	5487909	Returned to Compliance	11-APR-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5487907	Returned to Compliance	01-JAN-2023	31-MAR-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5487908	Returned to Compliance	01-JAN-2023	31-MAR-2023	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	5487906	Returned to Compliance	01-JUL-2013	31-DEC-2013	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3955498	Known	01-OCT-1997	31-OCT-1997	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1547592	Known	01-JUL-1992	31-JUL-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
6768115	5487912	SIA	State Violation/Reminder Notice	06-AUG-2025	State	-
6768116	5487911	SOX	State Compliance achieved	01-AUG-2025	State	-
6768112	5487910	SIE	State Public Notification requested	03-JUL-2025	State	-
6768110	5487907	SIF	State Public Notification received	30-MAY-2024	State	-
6768109	5487909	SOX	State Compliance achieved	30-MAY-2024	State	-
6768110	5487908	SIF	State Public Notification received	30-MAY-2024	State	-
6768104	5487906	SOX	State Compliance achieved	14-JAN-2014	State	Received WQPR Form Late. JL
6767398	3955498	SIE	State Public Notification requested	20-DEC-1997	State	-
1337292	1547592	SIE	State Public Notification requested	29-AUG-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 06-EVANSTON (EMERGENCY)	32348	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 07-LINCOLNWOOD (EMERGENCY)	32349	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 08-NILES (EMERGENCY)	32350	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 09-MORTON GROVE (EMERGENCY)	32860	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 03-MASTER METER 3 (EVANSTON)	25905	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 04-MASTER METER 2 (EVANSTON)	25906	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 05-MASTER METER 1 (EVANSTON)	32347	Yes	Consecutive Connection	Surface water	Permanent	Active
CC01-METER FEEDING MAIN PUMPING STATION	40624	Yes	Consecutive Connection	Surface water	Permanent	Active
SKOKIE	23410	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46687	No	Distribution System/Zone	-	-	Active
CHILD CARE FACILITY LEAD SAMPLING	46688	No	Distribution System/Zone	-	-	Active
PF 02-BOOSTER PUMP STATION	14813	No	Pump Facility	-	-	Active
GENERIC FINISHED SAMPLING STATION	27069	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29491	No	Sampling Station	-	-	Active
GR01-4.9 MG GROUND TANK AT TP01	12657	No	Storage	-	-	Active
SP02-4.9 MG STANDPIPE AT PF02	14337	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12071	No	Storage	-	-	Inactive
PF 02 GROUND STORAGE	12658	No	Storage	-	-	Inactive
TP 01-MAIN PUMPING STATION	22769	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-MAIN PUMPING STATION	22769	Gaseous Chlorination, Post	Disinfection

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