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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	7014408	Open	02-JUL-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7014409	Open	01-JUL-2025	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	7014405	Returned to Compliance	30-DEC-2020	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7014404	Returned to Compliance	01-JUL-2019	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7014403	Returned to Compliance	01-JUL-2016	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7014402	Returned to Compliance	01-JUL-2009	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7014399	Returned to Compliance	03-SEP-2008	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7014395	Returned to Compliance	01-JUL-2007	-	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7014180	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
307	7014409	SIA	State Violation/Reminder Notice	08-SEP-2025	State	-
306	7014408	SIE	State Public Notification requested	03-JUL-2025	State	-
302	7014405	SOX	State Compliance achieved	03-FEB-2021	State	-
298	7014404	SIA	State Violation/Reminder Notice	29-OCT-2019	State	-
297	7014403	SOX	State Compliance achieved	03-AUG-2016	State	-
295	7014399	SOX	State Compliance achieved	20-JUL-2009	State	Supply issued a satisfactory CCR on 6/1/09 (on time), IEPA rcvd copy 7/20/09.
295	7014402	SOX	State Compliance achieved	20-JUL-2009	State	Supply issued a satisfactory CCR on 6/1/09 (on time), IEPA rcvd copy 7/20/09.
287	7014395	SOX	State Compliance achieved	27-JUL-2007	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 02-EMERGENCY CONNECTION	34260	Yes	Consecutive Connection	Surface water	Emergency	Active
WELL 6 (00854) INACTIVE	18660	Yes	Well	Ground water	Permanent	Inactive
WELL 4 (00853) INACTIVE	18659	Yes	Well	Ground water	Permanent	Inactive
WELL 1 (00852) INACTIVE	18658	Yes	Well	Ground water	Other	Inactive
CC 03-EMERGENCY CONNECTION 2	34261	Yes	Consecutive Connection	Surface water	Emergency	Inactive
CC 01-WATER FROM OAK LAWN	25879	Yes	Consecutive Connection	Surface water	Permanent	Active
OAK FOREST	23385	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46925	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	46926	No	Distribution System/Zone	-	-	Active
PF 05-DISCH TO HS DISTR WEST FROM BOOSTE	33291	No	Pump Facility	-	-	Active
PF 06-DISCH TO HIGH DSTR SOUTH FROM BOOS	33292	No	Pump Facility	-	-	Active
GENERIC FINISHED SAMPLING STATION	27044	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29466	No	Sampling Station	-	-	Active
OAK FOREST 500K ELEVATED TANK	45918	No	Storage	-	-	Active
OAK FOREST 250K ELEVATED TANK	45919	No	Storage	-	-	Active
OAK FOREST 500K ELEVATED TANK	45921	No	Storage	-	-	Active
OAK FOREST 500K ELEVATED TANK	45922	No	Storage	-	-	Active
OAK FOREST 3.0MG GROUND STROAGE TANK	45923	No	Storage	-	-	Active
OAK FOREST 5.0MG GROUND STORAGE TANK	45924	No	Storage	-	-	Active
DISTRIBUTION ELEVATED STORAGE	10991	No	Storage	-	-	Inactive
DISTRIBUTION GROUND STORAGE	12050	No	Storage	-	-	Inactive
TAP 01 GROUND STORAGE	12635	No	Storage	-	-	Inactive
TP 01-LOREL AVENUE PUMPING STATION	31913	No	Treatment Plant	-	-	Active
TP 02-WELL 1 (INACTIVE)	14781	No	Treatment Plant	-	-	Inactive
TP 03-WELL 4 (INACTIVE)	14782	No	Treatment Plant	-	-	Inactive
TP 04-WELL 6 (INACTIVE)	14783	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-LOREL AVENUE PUMPING STATION	31913	Gaseous Chlorination, Pre	Disinfection

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