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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)	7119609	Returned to Compliance	01-OCT-2024	31-DEC-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7119608	Returned to Compliance	01-OCT-2024	31-DEC-2024	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	7119607	Returned to Compliance	01-OCT-2023	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	7119606	Returned to Compliance	30-DEC-2020	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7119405	Returned to Compliance	01-JUL-2005	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	7119605	Returned to Compliance	01-JUL-2005	31-JUL-2005	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	1729892	Returned to Compliance	01-OCT-1992	-	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1088089	Returned to Compliance	01-AUG-1989	31-JUL-1993	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	238385	Returned to Compliance	23-AUG-1985	22-AUG-1989	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7119280	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
9038716	7119609	SIF	State Public Notification received	08-AUG-2025	State	-
9038716	7119608	SIF	State Public Notification received	08-AUG-2025	State	-
9038712	7119607	SIF	State Public Notification received	24-JUN-2024	State	-
9038708	7119606	SOX	State Compliance achieved	13-JAN-2021	State	-
9038706	7119605	SIF	State Public Notification received	18-MAY-2006	State	-
9038105	7119405	SIA	State Violation/Reminder Notice	28-JUL-2005	State	-
9037992	1729892	SOX	State Compliance achieved	30-JUN-2000	State	-
394490	238385	SOX	State Compliance achieved	07-NOV-1989	State	-
394490	1088089	SOX	State Compliance achieved	07-NOV-1989	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 11-EMERGENCY CONNECTION	31719	Yes	Consecutive Connection	Surface water	Emergency	Active
WELL 7 (20572) ABANDONED)	20280	Yes	Well	Ground water	Other	Inactive
WELL 6 (20569) ABANDONED	20277	Yes	Well	Ground water	Other	Inactive
WELL 5 (20568) ABANDONED	20276	Yes	Well	Ground water	Other	Inactive
WELL 4 (20567) ABANDONED	20275	Yes	Well	Ground water	Other	Inactive
WELL 3 (ABANDONED)	20274	Yes	Well	Ground water	Other	Inactive
WELL 2 (ABANDONED)	20273	Yes	Well	Ground water	Other	Inactive
WELL 1 (ABANDONED)	20272	Yes	Well	Ground water	Other	Inactive
CC 12-SCHAUMBURG EMERGY CONNECTION	34322	Yes	Consecutive Connection	Surface water	Emergency	Active
CC13 - ELK GROVE VILLAGE EMERGY CONNECTI	47048	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 08-WEST STA METER	26091	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 09-CENTRAL STA METER	26092	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 10-EAST STA METER	26093	Yes	Consecutive Connection	Surface water	Permanent	Active
ROSELLE	23607	No	Distribution System/Zone	-	-	Active
IDSE	34679	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45570	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45571	No	Distribution System/Zone	-	-	Active
PF13 - BOOSTER STATION	35394	No	Pump Facility	-	-	Active
GENERIC FINISHED SAMPLING STATION	27266	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29688	No	Sampling Station	-	-	Active
ELEV1 - 250,000GAL ELEVATED TANK	11106	No	Storage	-	-	Active
GR1 - 1MG GROUND TANK	12145	No	Storage	-	-	Active
ELEV2 - 500,000GAL ELEVATED TANK	47021	No	Storage	-	-	Active
TP 01-WELL 1 (ABANDONED)	15319	No	Treatment Plant	-	-	Inactive
TP 02-WELL 2 (ABANDONED)	15320	No	Treatment Plant	-	-	Inactive
TP 03-WELL 3 (ABANDONED)	15321	No	Treatment Plant	-	-	Inactive
TP 04-WELL 4 (ABANDONED)	15322	No	Treatment Plant	-	-	Inactive
TP 05-WELL 5 (ABANDONED)	15323	No	Treatment Plant	-	-	Inactive
TP 06-WELL 6 (ABANDONED)	15324	No	Treatment Plant	-	-	Inactive
TP 07-WELL 7 (ABANDONED)	15325	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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