Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	IL0970050
PWS Name	ANTIOCH
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	14175
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
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7043220	Open	01-JUL-2025	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	7043217	Returned to Compliance	01-OCT-2023	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7043209	Returned to Compliance	07-AUG-2008	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7043210	Returned to Compliance	07-AUG-2008	-	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	7043208	Returned to Compliance	01-JAN-2007	30-JUN-2007	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	7043007	Returned to Compliance	01-DEC-2006	31-DEC-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	7042807	Returned to Compliance	01-NOV-2006	30-NOV-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7043107	Returned to Compliance	01-OCT-2006	31-DEC-2006	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	7043207	Returned to Compliance	01-JUL-2006	31-DEC-2006	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	5252001	Known	01-DEC-2000	31-DEC-2000	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	5252101	Known	01-NOV-2000	30-NOV-2000	No
TT	WQP Entry Point/Tap Treatment Technique Non-Compliance	Lead and Copper Rule	Lead and Copper Rule	7042201	Returned to Compliance	01-OCT-2000	31-DEC-2000	Yes
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	5366899	Returned to Compliance	01-OCT-1998	31-DEC-1998	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	5366798	Returned to Compliance	01-JUL-1998	30-SEP-1998	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3881497	Known	01-JUL-1997	31-JUL-1997	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3806497	Known	01-JUN-1997	30-JUN-1997	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3715397	Known	01-MAR-1997	31-MAR-1997	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	2993195	Known	01-MAY-1995	31-MAY-1995	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2625294	Known	01-JUL-1994	31-JUL-1994	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	2777894	Returned to Compliance	01-JAN-1994	-	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1956193	Known	01-JUL-1993	31-JUL-1993	No
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	2228393	Returned to Compliance	27-APR-1993	-	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	2289993	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	2289893	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	2290293	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	2289693	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	2289593	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	2289493	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	4718593	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	2289293	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	4718493	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	4718393	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	2289193	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	2289093	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	2288993	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	2290093	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	2290593	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	2290393	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	2290493	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	2289393	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	2228593	Returned to Compliance	01-JAN-1993	-	Yes
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	1740492	Returned to Compliance	01-APR-1992	30-SEP-1992	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7041880	Known	30-JUN-1977	29-JUN-1981	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
8541631	7043220	SIA	State Violation/Reminder Notice	01-AUG-2025	State	-
8541630	7043217	SIF	State Public Notification received	01-OCT-2024	State	-
8541613	7043210	SOX	State Compliance achieved	03-OCT-2008	State	Supply issued PN 9/30/08 (LATE), IEPA rcvd copy 10/3/08.
8541613	7043209	SOX	State Compliance achieved	03-OCT-2008	State	Supply issued PN 9/30/08 (LATE), IEPA rcvd copy 10/3/08.
8541614	7043208	SIF	State Public Notification received	03-OCT-2008	State	-
8541608	7042807	SOX	State Compliance achieved	01-JUL-2007	State	Supply went 6 months without a coliform violation.
8541608	7043007	SOX	State Compliance achieved	01-JUL-2007	State	Supply went 6 months without a coliform violation.
8541407	7043107	SOX	State Compliance achieved	15-JAN-2007	State	-
8541407	7043207	SOX	State Compliance achieved	15-JAN-2007	State	-
8539801	7042201	SOX	State Compliance achieved	31-MAR-2001	State	-
449501	5252001	SIE	State Public Notification requested	15-FEB-2001	State	-
449701	5252101	SIE	State Public Notification requested	15-JAN-2001	State	-
8539399	5366899	SOX	State Compliance achieved	30-JUN-1999	State	-
8539399	5366798	SOX	State Compliance achieved	30-JUN-1999	State	-
6796398	3881497	SIE	State Public Notification requested	05-OCT-1997	State	-
6603197	3806497	SIE	State Public Notification requested	30-AUG-1997	State	-
6202997	1740492	SOX	State Compliance achieved	21-FEB-1997	State	-
4778895	2993195	SIF	State Public Notification received	04-AUG-1995	State	-
4987395	2777894	SOX	State Compliance achieved	26-JUN-1995	State	-
4179595	2228393	SOX	State Compliance achieved	22-DEC-1994	State	-
3904495	2625294	SIF	State Public Notification received	10-OCT-1994	State	-
4461194	2228593	SIE	State Public Notification requested	30-MAR-1994	State	-
2106193	1956193	SIE	State Public Notification requested	11-SEP-1993	State	-
4460693	2290393	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2290293	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2290593	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	4718393	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	4718493	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	4718593	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2290093	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2289993	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2289893	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2289693	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2289593	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2289493	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2289393	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2289293	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2289193	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2289093	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2288993	SOX	State Compliance achieved	16-AUG-1993	State	-
4460693	2290493	SOX	State Compliance achieved	16-AUG-1993	State	-

1 - 41 of 41

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 5 (20313) EMERGENCY	20026	Yes	Well	Ground water	Emergency	Active
WELL 10 (01650)	34174	Yes	Well	Ground water	Permanent	Active
WELL 9 (01649)	34173	Yes	Well	Ground water	Permanent	Active
WELL 8 (01648)	34172	Yes	Well	Ground water	Permanent	Active
WELL 3 (20311)	20024	Yes	Well	Ground water	Permanent	Active
WELL 2 (20310)	20023	Yes	Well	Ground water	Permanent	Active
WELL 1 (20309)	20022	Yes	Well	Ground water	Permanent	Active
WELL 7 (01053)	18849	Yes	Well	Ground water	Permanent	Active
WELL 6 (00633)	18443	Yes	Well	Ground water	Permanent	Active
WELL 4 (20312) ABANDONED	20025	Yes	Well	Ground water	Other	Inactive
ANTIOCH	24128	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46284	No	Distribution System/Zone	-	-	Active
CHILD CARE FACILITY LEAD SAMPLING	46285	No	Distribution System/Zone	-	-	Active
PF09 - BOOSTER STATION	39577	No	Pump Facility	-	-	Active
PF10-PUMP FOR OAKWOOD KNOLLS SUBDIVISION	40793	No	Pump Facility	-	-	Active
GENERIC FINISHED SAMPLING STATION	27787	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	30209	No	Sampling Station	-	-	Active
DISTRIBUTION ELEVATED STORAGE	11346	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	34571	No	Storage	-	-	Active
TP 01-WELL 1	15974	No	Treatment Plant	-	-	Active
TP 02-WELL 2	15975	No	Treatment Plant	-	-	Active
TP 03-WELL 3	15976	No	Treatment Plant	-	-	Active
TP 05-WELL 5	15978	No	Treatment Plant	-	-	Active
TP 06-WELL 6	15979	No	Treatment Plant	-	-	Active
TP 07-WELL 7	15980	No	Treatment Plant	-	-	Active
TP08 - WELLS 8,9,10	34572	No	Treatment Plant	-	-	Active
WELL	15973	No	Treatment Plant	-	-	Inactive
TP 04-WELL 4	15977	No	Treatment Plant	-	-	Inactive

1 - 28 of 28

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-WELL 1	15974	Inhibitor, Polyphosphate	Corrosion control
TP 01-WELL 1	15974	Gaseous Chlorination, Pre	Disinfection
TP 01-WELL 1	15974	Gaseous Chlorination, Pre	Iron removal
TP 01-WELL 1	15974	Sequestration	Iron removal
TP 02-WELL 2	15975	Inhibitor, Polyphosphate	Corrosion control
TP 02-WELL 2	15975	Gaseous Chlorination, Pre	Disinfection
TP 02-WELL 2	15975	Gaseous Chlorination, Pre	Iron removal
TP 02-WELL 2	15975	Sequestration	Iron removal
TP 03-WELL 3	15976	Inhibitor, Polyphosphate	Corrosion control
TP 03-WELL 3	15976	Gaseous Chlorination, Pre	Disinfection
TP 03-WELL 3	15976	Gaseous Chlorination, Pre	Iron removal
TP 03-WELL 3	15976	Sequestration	Iron removal
TP 05-WELL 5	15978	Inhibitor, Polyphosphate	Corrosion control
TP 05-WELL 5	15978	Gaseous Chlorination, Pre	Disinfection
TP 05-WELL 5	15978	Gaseous Chlorination, Pre	Iron removal
TP 05-WELL 5	15978	Sequestration	Iron removal
TP 06-WELL 6	15979	Inhibitor, Polyphosphate	Corrosion control
TP 06-WELL 6	15979	Gaseous Chlorination, Pre	Disinfection
TP 06-WELL 6	15979	Gaseous Chlorination, Pre	Iron removal
TP 06-WELL 6	15979	Sequestration	Iron removal
TP 07-WELL 7	15980	Inhibitor, Polyphosphate	Corrosion control
TP 07-WELL 7	15980	Gaseous Chlorination, Pre	Disinfection
TP 07-WELL 7	15980	Gaseous Chlorination, Pre	Iron removal
TP 07-WELL 7	15980	Sequestration	Iron removal
TP08 - WELLS 8,9,10	34572	Innovative	Radionuclides removal
TP08 - WELLS 8,9,10	34572	Inhibitor, Polyphosphate	Corrosion control
TP08 - WELLS 8,9,10	34572	Gaseous Chlorination, Post	Disinfection

1 - 27 of 27

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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