Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	IL0970850
PWS Name	LAKE ZURICH
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	19759
County Served	Lake

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
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046226	Returned to Compliance	01-OCT-2023	31-DEC-2023	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046227	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046217	Returned to Compliance	01-APR-2009	30-JUN-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046216	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046215	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046214	Returned to Compliance	01-JUL-2008	30-SEP-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046213	Returned to Compliance	01-APR-2008	30-JUN-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046212	Returned to Compliance	01-JAN-2008	31-MAR-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046211	Returned to Compliance	01-OCT-2007	31-DEC-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046210	Returned to Compliance	01-JUL-2007	30-SEP-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046209	Returned to Compliance	01-APR-2007	30-JUN-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046208	Returned to Compliance	01-JAN-2007	31-MAR-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046207	Returned to Compliance	01-OCT-2006	31-DEC-2006	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7046007	Returned to Compliance	01-JUL-2006	30-SEP-2006	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045906	Returned to Compliance	01-APR-2006	30-JUN-2006	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045806	Returned to Compliance	01-JAN-2006	31-MAR-2006	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045706	Returned to Compliance	01-OCT-2005	31-DEC-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045606	Returned to Compliance	01-JUL-2005	30-SEP-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045405	Returned to Compliance	01-APR-2005	30-JUN-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045205	Returned to Compliance	01-JAN-2005	31-MAR-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7045005	Returned to Compliance	01-OCT-2004	31-DEC-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7044805	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)	7044404	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)	7043904	Returned to Compliance	01-JAN-2004	31-MAR-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7043704	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)	7043504	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)	7043303	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)	7043103	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)	7042903	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)	4497199	Returned to Compliance	01-MAY-1999	30-SEP-2002	Yes
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Barium	3134495	Returned to Compliance	01-JUL-1995	30-SEP-1995	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5392195	Returned to Compliance	01-JUN-1995	30-APR-1999	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	2997695	Returned to Compliance	01-MAY-1995	30-APR-1999	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1324891	Returned to Compliance	17-MAY-1991	16-MAY-1995	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	255386	Returned to Compliance	04-OCT-1985	15-OCT-1986	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	255285	Returned to Compliance	01-MAR-1985	28-FEB-1989	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	255181	Returned to Compliance	31-MAR-1981	30-MAR-1985	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7042580	Known	30-JUN-1977	29-JUN-1981	No

1 - 38 of 38

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
5329751	7046226	SOX	State Compliance achieved	26-DEC-2024	State	-
5329750	7046227	SOX	State Compliance achieved	10-OCT-2024	State	-
5329739	7046216	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046214	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046215	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046213	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046212	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046211	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046210	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046209	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046208	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046207	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046007	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329739	7046217	SOX	State Compliance achieved	28-AUG-2009	State	Samples submitted 08/28/09 brings TP05 and TP07 into radium compliance, all active TPs (TP01, TP02, TP04, TP05, TP07) now showing combined radium at or below 5 pCi/L. pbc 11/5/09
5329713	7045706	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7043103	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7045906	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7042903	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7045806	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7043303	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7043504	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7043704	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7045606	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7045405	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7045205	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7045005	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7044805	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7044404	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329713	7043904	SFK	State Bilateral Compliance Agreement signed	03-JUL-2007	State	W-2003-00537 and W-2004-00338
5329711	4497199	SOX	State Compliance achieved	27-JUL-2006	State	-
5329711	2997695	SOX	State Compliance achieved	27-JUL-2006	State	-
5329711	1324891	SOX	State Compliance achieved	27-JUL-2006	State	-
5329711	5392195	SOX	State Compliance achieved	27-JUL-2006	State	-
5323104	255386	SFK	State Bilateral Compliance Agreement signed	02-APR-2004	State	w-2003-00537
5323104	3134495	SFK	State Bilateral Compliance Agreement signed	02-APR-2004	State	w-2003-00537
1005985	255181	SOX	State Compliance achieved	19-MAY-1987	State	-
1005985	255285	SOX	State Compliance achieved	19-MAY-1987	State	-

1 - 37 of 37

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 11 (00860) SEALED	18666	Yes	Well	Ground water	Other	Inactive
WELL 8 (20260)	19974	Yes	Well	Ground water	Permanent	Active
WELL 7 (20259)	19973	Yes	Well	Ground water	Permanent	Active
WELL 12 (01073)	18869	Yes	Well	Ground water	Permanent	Active
WELL 9 (00691)	18498	Yes	Well	Ground water	Permanent	Active
WELL 10 (00636)	18446	Yes	Well	Ground water	Permanent	Active
WELL 6 (20258) ABANDONED	19972	Yes	Well	Ground water	Other	Inactive
WELL 5 (20257) ABANDONED	19971	Yes	Well	Ground water	Other	Inactive
WELL 3 (20256) ABANDONED	19970	Yes	Well	Ground water	Other	Inactive
WELL 2 (20255) ABANDONED	19969	Yes	Well	Ground water	Other	Inactive
LAKE ZURICH	24162	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46046	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	46047	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27821	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	30243	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47103	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47104	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47105	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47106	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	47107	No	Sampling Station	-	-	Active
ELEV1-750K GALLON ELEVATED TANK	11359	No	Storage	-	-	Active
ELEV2-1.5 MG ELEVATED TANK	44499	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12266	No	Storage	-	-	Inactive
TP 01-WELL 7 ION-EXCHANGE SOFTENING	16051	No	Treatment Plant	-	-	Active
TP 02-WELL 8 ION-EXCHANGE SOFTENING	16052	No	Treatment Plant	-	-	Active
TP 04-WELL 10 ION-EXCHANGE SOFTENING	16054	No	Treatment Plant	-	-	Active
TP 05-WELL 9 ION-EXCHANGE SOFTENING	16055	No	Treatment Plant	-	-	Active
TP 07-WELL 12 ION-EXCHANGE SOFTENING	16057	No	Treatment Plant	-	-	Active
TP 03-WELL 5 (ABANDONED)	16053	No	Treatment Plant	-	-	Inactive
TP 06-WELL 11 ABANDONED	16056	No	Treatment Plant	-	-	Inactive

1 - 30 of 30

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-WELL 7 ION-EXCHANGE SOFTENING	16051	Ion Exchange	Radionuclides removal
TP 01-WELL 7 ION-EXCHANGE SOFTENING	16051	Gaseous Chlorination, Pre	Disinfection
TP 02-WELL 8 ION-EXCHANGE SOFTENING	16052	Ion Exchange	Radionuclides removal
TP 02-WELL 8 ION-EXCHANGE SOFTENING	16052	Gaseous Chlorination, Pre	Disinfection
TP 04-WELL 10 ION-EXCHANGE SOFTENING	16054	Ion Exchange	Radionuclides removal
TP 04-WELL 10 ION-EXCHANGE SOFTENING	16054	Gaseous Chlorination, Pre	Disinfection
TP 05-WELL 9 ION-EXCHANGE SOFTENING	16055	Ion Exchange	Radionuclides removal
TP 05-WELL 9 ION-EXCHANGE SOFTENING	16055	Gaseous Chlorination, Post	Disinfection
TP 06-WELL 11 ABANDONED	16056	Gaseous Chlorination, Pre	Disinfection
TP 07-WELL 12 ION-EXCHANGE SOFTENING	16057	Ion Exchange	Radionuclides removal
TP 07-WELL 12 ION-EXCHANGE SOFTENING	16057	Gaseous Chlorination, Post	Disinfection

1 - 11 of 11

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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