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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
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7109999	Returned to Compliance	01-OCT-2024	31-DEC-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7109998	Returned to Compliance	01-OCT-2024	31-DEC-2024	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3954298	Known	01-OCT-1997	31-OCT-1997	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	2226493	Returned to Compliance	01-JAN-1993	-	Yes
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	1911593	Returned to Compliance	07-DEC-1992	-	Yes
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	1724492	Returned to Compliance	01-JUL-1992	31-DEC-1992	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7109780	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
6765604	7109999	SOX	State Compliance achieved	04-MAR-2025	State	-
6765604	7109998	SOX	State Compliance achieved	04-MAR-2025	State	-
6765598	3954298	SIE	State Public Notification requested	20-DEC-1997	State	-
2053394	2226493	SIE	State Public Notification requested	24-MAR-1994	State	-
2053194	1911593	SOX	State Compliance achieved	14-FEB-1994	State	-
2052993	1724492	SOX	State Compliance achieved	28-SEP-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 12-EMERG CONNECT WITH NORTHBROOK	32272	Yes	Consecutive Connection	Ground water	Emergency	Active
CC 11-EMERG CONNECTION WITH NORTHFIELD	32320	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 09 -EMERG IC TO NORTHBROOK	34602	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 02-18-INCH FEED FROM WILLMETTE	25837	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 13-24-INCH FEED FROM WILMETTE	34603	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 10- EAST FEED TO NORTH MAINE	32319	Yes	Consecutive Connection	Surface water	Permanent	Inactive
CC 01-CONNECTION FROM IL0313300 TAP 01	32757	Yes	Consecutive Connection	Surface water	Permanent	Inactive
CC 06-FORMER NAVAL AIR STATION PUMP STAT	32758	Yes	Consecutive Connection	Surface water	Permanent	Inactive
CC14-WEST FEED TO NORTH MAINE	43564	Yes	Consecutive Connection	Surface water	Permanent	Inactive
GLENVIEW	23347	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45624	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45625	No	Distribution System/Zone	-	-	Active
PF 07-DS POINT TO IL AM CHGO SBN DVN	32316	No	Pump Facility	-	-	Active
PF 08-WEDEL BOOSTER STATION	32317	No	Pump Facility	-	-	Active
PF 09-PATRIOT BOOSTER STATION	32318	No	Pump Facility	-	-	Active
PF 10-WASHINGTON BOOSTER STATION	34606	No	Pump Facility	-	-	Active
PF 11-NORTHFIELD BOOSTER STATION	34607	No	Pump Facility	-	-	Active
PF 12-WILLOW ROAD BOOSTER STATION	34608	No	Pump Facility	-	-	Active
GENERIC FINISHED SAMPLING STATION	27006	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29428	No	Sampling Station	-	-	Active
DISTRIBUTION ELEVATED STORAGE	10962	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12018	No	Storage	-	-	Active
TAP 05 GROUND STORAGE	32314	No	Storage	-	-	Active
TAP 02 GROUND STORAGE	32341	No	Storage	-	-	Active
TAP 13 GROUND STORAGE	34605	No	Storage	-	-	Active
TAP 06 GROUND STORAGE	32340	No	Storage	-	-	Inactive
TAP 03 GROUND STORAGE	32342	No	Storage	-	-	Inactive
TAP 04 GROUND STORAGE	32343	No	Storage	-	-	Inactive
TP 01-LARAMIE PUMP STATION	25836	No	Treatment Plant	-	-	Active
TP 02-RUGEN RD SENIOR PUMP STATION	31871	No	Treatment Plant	-	-	Active
TP 05-WEST LAKE PMP STATION	32313	No	Treatment Plant	-	-	Active
TP13-RUGEN JUNIOR PUMP STATION	34604	No	Treatment Plant	-	-	Active
TP 03-EXECUTIVE PUMPING STATION	22732	No	Treatment Plant	-	-	Inactive
TP 04-PORTAGE RUN PMP STA	22733	No	Treatment Plant	-	-	Inactive
TP 06-FORMER NAVAL AIR STATION PUMP STAT	32315	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 03-EXECUTIVE PUMPING STATION	22732	Gaseous Chlorination, Post	Disinfection
TP 04-PORTAGE RUN PMP STA	22733	Gaseous Chlorination, Post	Disinfection
TP 01-LARAMIE PUMP STATION	25836	Hypochlorination, Post	Disinfection
TP 02-RUGEN RD SENIOR PUMP STATION	31871	Hypochlorination, Post	Disinfection
TP 05-WEST LAKE PMP STATION	32313	Hypochlorination, Post	Disinfection
TP 06-FORMER NAVAL AIR STATION PUMP STAT	32315	Gaseous Chlorination, Post	Disinfection
TP13-RUGEN JUNIOR PUMP STATION	34604	Hypochlorination, Post	Disinfection

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