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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, Regular	Synthetic Organic Chemicals	Diquat	7114351	Known	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	7114352	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	7114353	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7114110	Returned to Compliance	01-JUL-2015	-	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	7114107	Returned to Compliance	01-JUL-2006	31-DEC-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	7113903	Known	01-MAY-2003	31-MAY-2003	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7113780	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
258628	7114352	SIF	State Public Notification received	09-JUN-2025	State	-
258630	7114353	SIF	State Public Notification received	09-JUN-2025	State	-
258629	7114351	SIF	State Public Notification received	09-JUN-2025	State	-
258609	7114110	SOX	State Compliance achieved	06-JUN-2016	State	-
258607	7114107	SOX	State Compliance achieved	16-JAN-2007	State	-
258203	7113903	SIE	State Public Notification requested	10-JUL-2003	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 21-MASTER METER 1 LOW PRES AREA	25943	Yes	Consecutive Connection	Surface water	Permanent	Active
WELL 21 (21159) (ABANDONED)	20625	Yes	Well	Ground water	Other	Inactive
WELL 19 (22157) ABANDONED	20623	Yes	Well	Ground water	Other	Inactive
WELL 12 (21156) ABANDONED	20622	Yes	Well	Ground water	Other	Inactive
WELL 2 (21155) ABANDONED	20621	Yes	Well	Ground water	Other	Inactive
WELL 09 (00523) ABANDONED	18336	Yes	Well	Ground water	Other	Inactive
WELL 07 (00522) ABANDONED	18335	Yes	Well	Ground water	Other	Inactive
WELL 06 (00521) ABANDONED	18334	Yes	Well	Ground water	Other	Inactive
WELL 05 (00520) ABANDONED	18333	Yes	Well	Ground water	Other	Inactive
WELL 04 (00519) ABANDONED	18332	Yes	Well	Ground water	Other	Inactive
WELL 13A (00518) ABANDONED	18331	Yes	Well	Ground water	Other	Inactive
WELL 17 (00517) ABANDONED	18330	Yes	Well	Ground water	Other	Inactive
WELL 14 (00516) ABANDONED	18329	Yes	Well	Ground water	Other	Inactive
WELL 10 (00514) ABANDONED	18327	Yes	Well	Ground water	Other	Inactive
WELL 20 (21158) (EMERGENCY)	20624	Yes	Well	Ground water	Emergency	Active
WELL 11 (00515) (EMERGENCY)	18328	Yes	Well	Ground water	Emergency	Active
WELL 15 (00278) (EMERGENCY)	18099	Yes	Well	Ground water	Emergency	Active
CC 22-MASTER METER 2 LOW PRES AREA	25944	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 23-MASTER METER 3 HIGH PRES AREA	25945	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 26-MASTER METER 4 HIGH PRES AREA	25948	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 27-PEAKING STATION 19 (INACTIVE)	32227	Yes	Consecutive Connection	Surface water	Permanent	Inactive
SCHAUMBURG	23430	No	Distribution System/Zone	-	-	Active
IDSE	34681	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45993	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45994	No	Distribution System/Zone	-	-	Active
PF 06-STATION 3	22785	No	Pump Facility	-	-	Active
PF 25-STATION 21	25947	No	Pump Facility	-	-	Active
PF 29-STATION 2	31636	No	Pump Facility	-	-	Active
PF 28-STATION 22	31638	No	Pump Facility	-	-	Active
PF 27-STATION 19	34288	No	Pump Facility	-	-	Active
PF 07-STATION 24 (ABANDONED)	22786	No	Pump Facility	-	-	Inactive
PF 18-STATION 22 (ABANDONED)	22787	No	Pump Facility	-	-	Inactive
PF 20-STATION 12	22788	No	Pump Facility	-	-	Inactive
PF 24-STATION 20	25946	No	Pump Facility	-	-	Inactive
GENERIC FINISHED SAMPLING STATION	27089	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29511	No	Sampling Station	-	-	Active
ELEV01-1.0 MG TOWER	12676	No	Storage	-	-	Active
GR02-2.0 MG GROUND TANK AT PF06	12677	No	Storage	-	-	Active
GR03-TWO 1.0 MG GROUND TANKS AT TP20	12678	No	Storage	-	-	Active
GR04-2.0 MG GROUND TANK AT PF27	12679	No	Storage	-	-	Active
GR05-2.0 MG GROUND TANK AT TP24	12680	No	Storage	-	-	Active
GR06-2.0 MG GROUND TANK AT TP25	12681	No	Storage	-	-	Active
SP01-6.5 MG STANDPIPE	44928	No	Storage	-	-	Active
ELEV02-750K GALLON TOWER	44929	No	Storage	-	-	Active
SP02-6.0 MG STANDPIPE AT PF28	44930	No	Storage	-	-	Active
DISTRIBUTION ELEVATED STORAGE	11023	No	Storage	-	-	Inactive
DISTRIBUTION GROUND STORAGE	12089	No	Storage	-	-	Inactive
TAP 19 GROUND STORAGE (INACTIVE)	12682	No	Storage	-	-	Inactive
TAP 20 GROUND STORAGE	12683	No	Storage	-	-	Inactive
TAP 24 GROUND STORAGE	12684	No	Storage	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 04-WELL 20 (EMERGENCY)	14858	Hypochlorination, Post	Disinfection
TP 05-WELL 21 (INACTIVE)	14859	Hypochlorination, Post	Disinfection
TP 14-WELL 11 (EMERGENCY)	14866	Hypochlorination, Post	Disinfection
TP 19-WELL 15 (EMERGENCY)	14870	Hypochlorination, Post	Disinfection
TP20-STATION 12 & EMERGENCY WELL #15	40738	Hypochlorination, Pre	Disinfection
TP24-STATION 20 W/ EMERGENCY WELL #20	40739	Hypochlorination, Pre	Disinfection
TP25-STATION 21	40740	Hypochlorination, Pre	Disinfection

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