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PWS ID	IL1110200
PWS Name	FOX RIVER GROVE
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	4702
County Served	McHenry

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

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
TT	WQP Entry Point/Tap Treatment Technique Non-Compliance	Lead and Copper Rule	Lead and Copper Rule	7146515	Returned to Compliance	01-JUL-2020	31-DEC-2020	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7146514	Returned to Compliance	01-JUL-2014	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	7146510	Returned to Compliance	01-OCT-2009	-	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	7146509	Returned to Compliance	01-JAN-2008	30-JUN-2008	No
TT	WQP Entry Point/Tap Treatment Technique Non-Compliance	Lead and Copper Rule	Lead and Copper Rule	7146406	Returned to Compliance	01-JAN-2006	30-JUN-2006	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7146507	Returned to Compliance	01-JAN-2004	31-DEC-2006	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5217400	Known	01-JUL-2000	31-JUL-2000	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	4209198	Known	01-JUL-1998	31-JUL-1998	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	4054098	Known	01-MAR-1998	31-MAR-1998	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2646794	Known	01-AUG-1994	31-AUG-1994	No
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	1977393	Returned to Compliance	07-DEC-1992	-	Yes
MCL	Maximum Contaminant Level Violation, Average	Volatile Organic Chemicals	Trichloroethylene	1478692	Known	01-JAN-1992	31-MAR-1992	Yes
MCL	Maximum Contaminant Level Violation, Average	Volatile Organic Chemicals	Trichloroethylene	1407292	Known	01-OCT-1991	31-DEC-1991	Yes
MCL	Maximum Contaminant Level Violation, Average	Volatile Organic Chemicals	Trichloroethylene	1478591	Known	01-JUL-1991	30-SEP-1991	Yes
MCL	Maximum Contaminant Level Violation, Average	Volatile Organic Chemicals	Trichloroethylene	1407191	Known	01-APR-1991	30-JUN-1991	Yes
MCL	Maximum Contaminant Level Violation, Average	Volatile Organic Chemicals	Trichloroethylene	1407091	Known	01-JAN-1991	31-MAR-1991	Yes
MCL	Maximum Contaminant Level Violation, Average	Volatile Organic Chemicals	Trichloroethylene	1406991	Known	01-OCT-1990	31-DEC-1990	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7144080	Known	30-JUN-1977	29-JUN-1981	No

1 - 18 of 18

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
7366623	7146515	SOX	State Compliance achieved	02-JUL-2021	State	-
7366617	7146514	SOX	State Compliance achieved	08-JUN-2015	State	-
7366615	7146510	SOX	State Compliance achieved	09-OCT-2009	State	Sent in LCRN example and Certification Form
7366613	7146509	SOX	State Compliance achieved	17-JUL-2008	State	Received form
7366610	7146406	SOX	State Compliance achieved	05-JUL-2007	State	Requested change in ranges on approximately 8/7/2007. Request approved on 9/28/2007
7366607	7146507	SOX	State Compliance achieved	26-OCT-2006	State	-
180400	5217400	SIE	State Public Notification requested	15-SEP-2000	State	-
7362098	4209198	SIE	State Public Notification requested	15-SEP-1998	State	-
7199798	4054098	SIE	State Public Notification requested	30-MAY-1998	State	-
3948795	2646794	SIE	State Public Notification requested	29-OCT-1994	State	-
4204693	1977393	SOX	State Compliance achieved	17-SEP-1993	State	-
1E92	1478591	EFJ	Federal issued Formal Notice of Violation	02-SEP-1992	ODSWeb	-
1E92	1407091	EFJ	Federal issued Formal Notice of Violation	02-SEP-1992	ODSWeb	-
1E92	1407292	EFJ	Federal issued Formal Notice of Violation	02-SEP-1992	ODSWeb	-
1E92	1407191	EFJ	Federal issued Formal Notice of Violation	02-SEP-1992	ODSWeb	-
1572092	1406991	SIE	State Public Notification requested	07-MAY-1992	State	-
1573092	1478692	SIE	State Public Notification requested	01-JAN-1992	State	-

1 - 17 of 17

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC 03-EMERGENCY CONNECTION	33986	Yes	Consecutive Connection	Ground water	Emergency	Active
WELL 6 (02196)	43845	Yes	Well	Ground water	Permanent	Active
WELL 4 (01394)	32614	Yes	Well	Ground water	Permanent	Active
WELL 2 (20155)	19870	Yes	Well	Ground water	Permanent	Active
WELL 1 (20154)	19869	Yes	Well	Ground water	Permanent	Active
WELL 5 (02125) (SEALED)	41384	Yes	Well	Ground water	Other	Inactive
WELL 3 (00983) ABANDONED	18786	Yes	Well	Ground water	Other	Inactive
FOX RIVER GROVE	24402	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45069	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45070	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	28061	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	30483	No	Sampling Station	-	-	Active
ELEV1 - 0.5MG ELEVATED TANK	11455	No	Storage	-	-	Active
TP 01-WELL #1 & #2 IRON REMOVAL PLANT	16469	No	Treatment Plant	-	-	Active
TP 02-WELL #4 & #6 IRON REMOVAL PLANT	16470	No	Treatment Plant	-	-	Active

1 - 15 of 15

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-WELL #1 & #2 IRON REMOVAL PLANT	16469	Fluoridation	Other
TP 01-WELL #1 & #2 IRON REMOVAL PLANT	16469	Aeration, Slat Tray	Organics removal
TP 01-WELL #1 & #2 IRON REMOVAL PLANT	16469	Inhibitor, Polyphosphate	Corrosion control
TP 01-WELL #1 & #2 IRON REMOVAL PLANT	16469	Gaseous Chlorination, Post	Disinfection
TP 01-WELL #1 & #2 IRON REMOVAL PLANT	16469	Filtration, Greensand	Iron removal
TP 01-WELL #1 & #2 IRON REMOVAL PLANT	16469	Aeration, Slat Tray	Iron removal
TP 01-WELL #1 & #2 IRON REMOVAL PLANT	16469	Gaseous Chlorination, Pre	Iron removal
TP 01-WELL #1 & #2 IRON REMOVAL PLANT	16469	Permanganate	Iron removal
TP 02-WELL #4 & #6 IRON REMOVAL PLANT	16470	Fluoridation	Other
TP 02-WELL #4 & #6 IRON REMOVAL PLANT	16470	Aeration, Slat Tray	Organics removal
TP 02-WELL #4 & #6 IRON REMOVAL PLANT	16470	Gaseous Chlorination, Pre	Iron removal
TP 02-WELL #4 & #6 IRON REMOVAL PLANT	16470	Gaseous Chlorination, Post	Disinfection
TP 02-WELL #4 & #6 IRON REMOVAL PLANT	16470	Filtration, Greensand	Iron removal
TP 02-WELL #4 & #6 IRON REMOVAL PLANT	16470	Aeration, Slat Tray	Iron removal
TP 02-WELL #4 & #6 IRON REMOVAL PLANT	16470	Permanganate	Iron removal
TP 02-WELL #4 & #6 IRON REMOVAL PLANT	16470	Inhibitor, Polyphosphate	Corrosion control

1 - 16 of 16

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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