---

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.

---

Violations

Go

Rows1510152025501001000All

Actions

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	TTHM	7043644	Returned to Compliance	01-JUL-2024	30-SEP-2024	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7043187	Returned to Compliance	01-JUL-2012	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2997895	Known	01-JUN-1995	30-JUN-1995	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2633594	Known	01-AUG-1994	31-AUG-1994	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	2633494	Known	01-AUG-1994	31-AUG-1994	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1136890	Returned to Compliance	01-DEC-1989	30-NOV-1993	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	255786	Returned to Compliance	09-DEC-1985	08-DEC-1989	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7043180	Known	30-JUN-1977	29-JUN-1981	No

• 1 - 8 of 8

Column Actions

Search

---

Enforcement Actions

Go

Rows1510152025501001000All

Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
4784505	7043644	SIF	State Public Notification received	30-JUN-2025	State	-
4784499	7043187	SOX	State Compliance achieved	10-JUL-2013	State	-
4784495	2997895	SIF	State Public Notification received	22-SEP-1995	State	-
3917295	2633594	SIE	State Public Notification requested	29-OCT-1994	State	-
3917295	2633494	SIE	State Public Notification requested	29-OCT-1994	State	-
1278792	255786	SOX	State Compliance achieved	30-JUN-1992	State	-
1278792	1136890	SOX	State Compliance achieved	30-JUN-1992	State	-

• 1 - 7 of 7

Column Actions

Search

---

All Facilities

Go

Rows1510152025501001000All

Actions

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC 09-INTERCONNECTION (EMERGENCY)	33999	Yes	Consecutive Connection	Surface water	Other	Inactive
WELL 2 (21043) ABANDONED	20535	Yes	Well	Ground water	Other	Inactive
WELL 1 (21042)ABANDONED	20534	Yes	Well	Ground water	Other	Inactive
WELL 5 (21041) ABANDONED	20533	Yes	Well	Ground water	Other	Inactive
WELL 4 (21040) ABANDONED	20532	Yes	Well	Ground water	Other	Inactive
WELL 3 (21039) ABANDONED	20531	Yes	Well	Ground water	Other	Inactive
WELL 2 (21038) ABANDONED	20530	Yes	Well	Ground water	Other	Inactive
WELL 1 (21037) ABANDONED	20529	Yes	Well	Ground water	Other	Inactive
WELL 3 (00325) ABANDONED	18145	Yes	Well	Ground water	Other	Inactive
CC 05-METER FROM CLCJAWA	26289	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 06-CLC-JAWA DELIVERY STRUCTURE 2	33031	Yes	Consecutive Connection	Surface water	Permanent	Active
CC10-CLCJAWA WATER @ BALLARD ROAD	41718	Yes	Consecutive Connection	Surface water	Permanent	Active
VERNON HILLS	24185	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45664	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45667	No	Distribution System/Zone	-	-	Active
PF11-BALLARD ROAD PUMP STATION	41719	No	Pump Facility	-	-	Active
PF 07-PUMP STATION	34000	No	Pump Facility	-	-	Inactive
PF 08-PUMP STATION	34001	No	Pump Facility	-	-	Inactive
GENERIC FINISHED SAMPLING STATION	27844	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	30266	No	Sampling Station	-	-	Active
ELEV1-40K ELEVATED TANK	11367	No	Storage	-	-	Active
GR04-500K GROUND TANK AT TP04	12881	No	Storage	-	-	Active
GR07-500K GROUND TANK AT TP07	33997	No	Storage	-	-	Active
GR08-600K GROUND TANK AT TP08	33998	No	Storage	-	-	Active
GR03-1.2 MG RESERVOIR @ HAWTHORN PS	41000	No	Storage	-	-	Active
GR10-1.0 MG GROUND TANK @ BALLARD PS	41720	No	Storage	-	-	Active
ELEV2-500K GALLON ET AT BUTTERFIELD	44313	No	Storage	-	-	Active
ELEV3-500K GALLON ET AT HAWTHORN	44314	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12276	No	Storage	-	-	Inactive
TP 03-HAWTHORN PS (EMERGENCY)	16122	No	Treatment Plant	-	-	Active
TP 04-CORP WOODS PS (EMERGENCY)	16123	No	Treatment Plant	-	-	Active
TP 07-GREGG'S LANDING PS (EMERGENCY)	33994	No	Treatment Plant	-	-	Active
TP 08-WW GRAINGER PUMP STAT (EMERGENCY)	33996	No	Treatment Plant	-	-	Active
TP 01-WELL 1 ABANDONED	16120	No	Treatment Plant	-	-	Inactive
TP 02-WELLS 4 AND 5 (ABANDONED)	16121	No	Treatment Plant	-	-	Inactive

• 1 - 35 of 35

Column Actions

Search

---

Treatment Processes

Go

Rows1510152025501001000All

Actions

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-WELL 1 ABANDONED	16120	Hypochlorination, Post	Disinfection
TP 03-HAWTHORN PS (EMERGENCY)	16122	Hypochlorination, Post	Disinfection
TP 04-CORP WOODS PS (EMERGENCY)	16123	Hypochlorination, Post	Disinfection
TP 07-GREGG'S LANDING PS (EMERGENCY)	33994	Hypochlorination, Post	Disinfection
TP 08-WW GRAINGER PUMP STAT (EMERGENCY)	33996	Hypochlorination, Post	Disinfection

• 1 - 5 of 5

Column Actions

Search