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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	7013600	Open	02-JUL-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7013598	Returned to Compliance	01-JUL-2020	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4093198	Known	01-JUN-1998	30-JUN-1998	Yes
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	3955197	Returned to Compliance	01-JUL-1997	31-DEC-1997	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	3784497	Returned to Compliance	01-APR-1997	30-JUN-1997	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	3784397	Returned to Compliance	01-JAN-1997	31-MAR-1997	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	3618996	Returned to Compliance	01-JAN-1996	-	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	2732194	Returned to Compliance	01-JAN-1994	-	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	2226793	Returned to Compliance	01-JAN-1993	-	Yes
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	1912793	Returned to Compliance	07-DEC-1992	-	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1546692	Known	01-SEP-1992	30-SEP-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1292491	Known	01-MAR-1991	31-MAR-1991	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1292591	Known	01-MAR-1991	31-MAR-1991	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7013280	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
7958707	7013600	SIE	State Public Notification requested	03-JUL-2025	State	-
7958703	7013598	SOX	State Compliance achieved	04-SEP-2020	State	-
7958599	3955197	SOX	State Compliance achieved	19-APR-1999	State	-
7958399	3784497	SOX	State Compliance achieved	16-APR-1999	State	-
7958399	3784397	SOX	State Compliance achieved	16-APR-1999	State	-
7313298	4093198	SIE	State Public Notification requested	15-AUG-1998	State	-
6138697	3618996	SOX	State Compliance achieved	03-MAR-1997	State	-
4924295	2732194	SOX	State Compliance achieved	05-FEB-1995	State	-
4924295	2226793	SOX	State Compliance achieved	05-FEB-1995	State	-
1452794	1912793	SOX	State Compliance achieved	28-JAN-1994	State	-
1452593	1546692	SIE	State Public Notification requested	24-OCT-1992	State	-
885691	1292591	SIE	State Public Notification requested	25-APR-1991	State	-
885691	1292491	SIE	State Public Notification requested	25-APR-1991	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 01-PUMPING STATION	25858	Yes	Consecutive Connection	Surface water	Emergency	Inactive
W1 ABANDONED	20300	Yes	Well	Ground water	Other	Inactive
W2 NE CORNER JOLIET AVE AND COLLINS	18023	Yes	Well	Ground water	Other	Inactive
CC02-WATER FROM MCCOOK	43688	Yes	Consecutive Connection	Surface water	Permanent	Active
LYONS	23370	No	Distribution System/Zone	-	-	Active
IDSE	34778	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45649	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45650	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27029	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29451	No	Sampling Station	-	-	Active
LYONS 250 K ELEVATED TANK	44743	No	Storage	-	-	Active
LYONS GROUND STORAGE TANK	44744	No	Storage	-	-	Active
DISTRIBUTION ELEVATED STORAGE	10978	No	Storage	-	-	Inactive
DISTRIBUTION GROUND STORAGE	12036	No	Storage	-	-	Inactive
TP 01-BOOSTER STATION	31894	No	Treatment Plant	-	-	Active
TP 02-WELL NO 1	14775	No	Treatment Plant	-	-	Inactive
TP 03-WELL 2	14776	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-BOOSTER STATION	31894	Hypochlorination, Post	Disinfection

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