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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)	7015811	Returned to Compliance	01-OCT-2024	31-DEC-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7015810	Returned to Compliance	01-OCT-2024	31-DEC-2024	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7015809	Returned to Compliance	01-JUL-2023	-	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3423496	Known	01-JUN-1996	30-JUN-1996	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	3423396	Known	01-JUN-1996	30-JUN-1996	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7015680	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
8	7015810	SIF	State Public Notification received	21-JUN-2025	State	-
8	7015811	SIF	State Public Notification received	21-JUN-2025	State	-
4	7015809	SOX	State Compliance achieved	12-JAN-2024	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
CC08 - EMER CONN W PEKARA SUBDIVISION	40320	Yes	Consecutive Connection	Ground water	Emergency	Active
WELL 7 (01929) EMERGENCY	40160	Yes	Well	Ground water	Emergency	Active
WELL 2 (00881) EMERGENCY	18686	Yes	Well	Ground water	Emergency	Active
WELL 1 (00880) EMERGENCY	18685	Yes	Well	Ground water	Emergency	Active
WELL 6 (00532) EMERGENCY	18345	Yes	Well	Ground water	Emergency	Active
CC07 - EMER CONN W ARLINGTON HEIGHTS	40319	Yes	Consecutive Connection	Surface water	Emergency	Active
CC 01-DISCH TO DIST FROM PS1	25920	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 02-DISCH TO DIST FROM PS2	25921	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 05-DISCH TO DIST FROM PS6	25922	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 06-DISCH TO DIST FROM PS7	25923	Yes	Consecutive Connection	Surface water	Permanent	Active
BUFFALO GROVE	23424	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46140	No	Distribution System/Zone	-	-	Active
CHILD CARE FACILITY LEAD SAMPLING	46142	No	Distribution System/Zone	-	-	Active
PF 03-RESERVOIR NO 3	22775	No	Pump Facility	-	-	Inactive
PF 04-RESERVOIR NO4	22776	No	Pump Facility	-	-	Inactive
GENERIC FINISHED SAMPLING STATION	27083	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29505	No	Sampling Station	-	-	Active
DISTRIBUTION GROUND STORAGE	12084	No	Storage	-	-	Active
GR06 PUMP STATION 6	33368	No	Storage	-	-	Active
GR01 PUMP STATION 1	33370	No	Storage	-	-	Active
GR02 PUMP STATION 2	33371	No	Storage	-	-	Active
GR07 PUMP STATION 7	44968	No	Storage	-	-	Active
GR05-GROUND STORAGE	33369	No	Storage	-	-	Inactive
TP 01-DISCH TO DIST FROM PS1	31959	No	Treatment Plant	-	-	Active
TP 02-DISCH TO DIST FROM PS2	31960	No	Treatment Plant	-	-	Active
TP 05-DISCH TO DIST FROM PS6	31961	No	Treatment Plant	-	-	Active
TP 06-DISCH TO DIST FROM PS7	31962	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-DISCH TO DIST FROM PS1	31959	Gaseous Chlorination, Pre	Disinfection
TP 02-DISCH TO DIST FROM PS2	31960	Gaseous Chlorination, Pre	Disinfection
TP 05-DISCH TO DIST FROM PS6	31961	Gaseous Chlorination, Pre	Disinfection
TP 06-DISCH TO DIST FROM PS7	31962	Gaseous Chlorination, Pre	Disinfection

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