---

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
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	7047707	Returned to Compliance	02-JUL-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7047708	Open	01-JUL-2025	-	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7047706	Returned to Compliance	01-OCT-2021	31-DEC-2021	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7047405	Returned to Compliance	10-JUL-2004	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7047305	Returned to Compliance	10-JUL-2004	-	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7047505	Returned to Compliance	01-JUL-2004	30-SEP-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7047104	Returned to Compliance	01-APR-2004	30-JUN-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046904	Returned to Compliance	01-JAN-2004	31-MAR-2004	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7047705	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046404	Returned to Compliance	01-OCT-2003	31-DEC-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046204	Returned to Compliance	01-JUL-2003	30-SEP-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046003	Returned to Compliance	01-APR-2003	30-JUN-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045803	Returned to Compliance	01-JAN-2003	31-MAR-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045403	Returned to Compliance	01-OCT-2002	31-DEC-2002	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045602	Returned to Compliance	01-APR-2002	30-SEP-2002	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	4115798	Returned to Compliance	01-APR-1998	31-MAR-2002	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5399794	Returned to Compliance	01-MAY-1994	31-MAR-1998	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	2478894	Returned to Compliance	01-APR-1994	31-MAR-1998	Yes
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	2792394	Returned to Compliance	01-JAN-1994	-	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1191490	Returned to Compliance	05-APR-1990	04-APR-1994	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7045280	Known	30-JUN-1977	29-JUN-1981	No

• 1 - 21 of 21

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
5013612	7047708	SIA	State Violation/Reminder Notice	21-OCT-2025	State	-
5013611	7047707	SIE	State Public Notification requested	03-JUL-2025	State	-
5013609	7047706	SOX	State Compliance achieved	28-JAN-2022	State	result received
5013606	7047705	SOX	State Compliance achieved	25-OCT-2005	State	-
5013005	7047505	SIF	State Public Notification received	06-DEC-2004	State	-
5012905	7045602	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	7047104	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	7046904	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	1191490	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	2478894	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	4115798	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	5399794	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	7045403	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	7045803	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	7046003	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	7046204	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012905	7046404	SOX	State Compliance achieved	22-NOV-2004	State	9/21/2004 SAMPLE RESULTS RECEIVED WHICH INDICATE A RTC.
5012705	7047305	SOX	State Compliance achieved	03-NOV-2004	State	Supply issued PN 10/30/04, IEPA rcvd. copy 11/03/04
5012705	7047405	SOX	State Compliance achieved	03-NOV-2004	State	Supply issued PN 10/30/04, IEPA rcvd. copy 11/03/04
2114394	2792394	SOX	State Compliance achieved	15-SEP-1994	State	-

• 1 - 20 of 20

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 02-EMER CONN W/ MUNDELEIN (DISCONNECT	31647	Yes	Consecutive Connection	Surface water	Other	Inactive
WELL 3 (01550)	33731	Yes	Well	Ground water	Permanent	Active
WELL 1 (20249)	19963	Yes	Well	Ground water	Permanent	Active
WELL 2 (01055)	18851	Yes	Well	Ground water	Permanent	Active
WEST SHORE PARK SBDV	24252	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27911	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	30333	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47046	No	Sampling Station	-	-	Active
HD01-900K GALLON PRES TANK AT TP01	12288	No	Storage	-	-	Active
GR01-116,500 GALLON GROUND TANK AT TP01	31652	No	Storage	-	-	Active
TP 01-WELLS #1,#2, & #3 RADIUM BLENDING	16249	No	Treatment Plant	-	-	Active

• 1 - 11 of 11

Column Actions

Search

---

Treatment Processes

Go

Rows1510152025501001000All

Actions

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-WELLS #1,#2, & #3 RADIUM BLENDING	16249	Innovative	Radionuclides removal
TP 01-WELLS #1,#2, & #3 RADIUM BLENDING	16249	Hypochlorination, Post	Disinfection

• 1 - 2 of 2

Column Actions

Search