Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	IL1970500
PWS Name	LOCKPORT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	23100
County Served	Will

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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	7085657	Known	01-DEC-2025	31-DEC-2025	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7085658	Known	01-DEC-2025	31-DEC-2025	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	7085616	Known	01-NOV-2025	30-NOV-2025	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7085617	Known	01-NOV-2025	30-NOV-2025	No
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	7085614	Open	02-JUL-2025	-	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	7085619	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	7085653	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	7085620	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	7085655	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	7085650	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	7085649	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	7085648	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	7085647	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	7085646	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	7085652	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	7085644	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	7085643	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	7085642	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	7085641	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	7085640	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	7085639	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	7085638	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	7085637	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	7085636	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	7085635	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	7085634	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	7085633	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	7085632	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	7085621	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	7085631	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	7085630	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	7085629	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	7085628	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	7085622	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	7085627	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	7085626	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	7085625	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	7085624	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	7085623	Known	01-JAN-2023	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	7085654	Known	01-JAN-2023	31-DEC-2025	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7085527	Returned to Compliance	01-JUN-2015	30-JUN-2015	Yes
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	7085517	Returned to Compliance	01-JUL-2012	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	7085524	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7085514	Returned to Compliance	15-AUG-2009	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7085513	Returned to Compliance	15-AUG-2009	-	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	7085512	Returned to Compliance	01-JUL-2008	31-JUL-2008	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7085510	Returned to Compliance	01-DEC-2006	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7085507	Returned to Compliance	01-OCT-2006	31-DEC-2006	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7085205	Returned to Compliance	01-JAN-2005	31-MAR-2005	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7085305	Returned to Compliance	01-JAN-2005	31-MAR-2005	No

1 - 50 of 73

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9867443	7085614	SIF	State Public Notification received	30-DEC-2025	State	-
9867442	7085617	SIE	State Public Notification requested	30-DEC-2025	State	-
9867440	7085616	SIE	State Public Notification requested	30-DEC-2025	State	-
9867336	7085527	SOX	State Compliance achieved	31-JUL-2015	State	-
9867331	7085524	SIF	State Public Notification received	10-JUN-2014	State	-
9867328	7085517	SIF	State Public Notification received	07-JUN-2013	State	-
9867320	7085513	SOX	State Compliance achieved	14-SEP-2009	State	Supply issued PN 9/2/09 (LATE), IEPA rcvd copy 9/14/09.
9867320	7085514	SOX	State Compliance achieved	14-SEP-2009	State	Supply issued PN 9/2/09 (LATE), IEPA rcvd copy 9/14/09.
9867318	7085512	SOX	State Compliance achieved	31-JAN-2009	State	-
9867315	7085510	SIA	State Violation/Reminder Notice	13-FEB-2008	State	-
9867313	7085507	SIF	State Public Notification received	11-FEB-2008	State	-
9866906	7085205	SIF	State Public Notification received	14-OCT-2005	State	Supply issued PN 6/23/05 in their CCR (on-time), IEPA rcvd copy of PN along with PN cert form 10/14/05.
9866906	7085305	SIF	State Public Notification received	14-OCT-2005	State	Supply issued PN 6/23/05 in their CCR (on-time), IEPA rcvd copy of PN along with PN cert form 10/14/05.
9865703	4527299	SIF	State Public Notification received	19-FEB-2003	State	-
9865302	4005498	SOX	State Compliance achieved	30-SEP-2002	State	-
9865302	2368294	SOX	State Compliance achieved	30-SEP-2002	State	-
9865302	2201394	SOX	State Compliance achieved	30-SEP-2002	State	-
9865302	1151590	SOX	State Compliance achieved	30-SEP-2002	State	-
9865302	285186	SOX	State Compliance achieved	30-SEP-2002	State	-
9865302	5070094	SOX	State Compliance achieved	30-SEP-2002	State	-
9865302	5435902	SOX	State Compliance achieved	30-SEP-2002	State	-
9865302	5408390	SOX	State Compliance achieved	30-SEP-2002	State	-
8193999	4596299	SIE	State Public Notification requested	15-SEP-1999	State	-
7915399	4376799	SIE	State Public Notification requested	15-FEB-1999	State	-
7915399	4376699	SIE	State Public Notification requested	15-FEB-1999	State	-
9864998	2368194	SOX	State Compliance achieved	30-JUN-1998	State	-
9864998	5069994	SOX	State Compliance achieved	30-JUN-1998	State	-
9864998	5069897	SOX	State Compliance achieved	30-JUN-1998	State	-
6995198	4005597	SIE	State Public Notification requested	17-FEB-1998	State	-
4269895	2838595	SIE	State Public Notification requested	12-MAR-1995	State	-
4630695	7083380	SOX	State Compliance achieved	12-JAN-1995	State	-
4630695	1704593	SOX	State Compliance achieved	12-JAN-1995	State	-
4630695	1048789	SOX	State Compliance achieved	12-JAN-1995	State	-
4630695	284981	SOX	State Compliance achieved	12-JAN-1995	State	-
4630695	285085	SOX	State Compliance achieved	12-JAN-1995	State	-
1011191	1337591	SIE	State Public Notification requested	20-JUL-1991	State	-

1 - 36 of 36

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 8 (01325) ABANDONED	19105	Yes	Well	Ground water	Other	Inactive
WELL 15 (02118)	41388	Yes	Well	Ground water	Permanent	Active
WELL 14 (02074)	40961	Yes	Well	Ground water	Permanent	Active
WELL 13 (01866)	39767	Yes	Well	Ground water	Permanent	Active
WELL 12 (01736)	34510	Yes	Well	Ground water	Permanent	Active
WELL 11 (01466)	33001	Yes	Well	Ground water	Permanent	Active
WELL 10 (01467)	33000	Yes	Well	Ground water	Permanent	Active
WELL 6 (00927)	18732	Yes	Well	Ground water	Permanent	Active
WELL 2 (00991) ABANDONED	33355	Yes	Well	Ground water	Other	Inactive
WELL 1 (20358) ABANDONED	33354	Yes	Well	Ground water	Other	Inactive
WELL 3 (20433) ABANDONED	33346	Yes	Well	Ground water	Other	Inactive
WELL 4 (00239) PART OF LOCKPORT HEIGHTS	33345	Yes	Well	Ground water	Other	Inactive
WELL 9 (01404) ABANDONED	32630	Yes	Well	Ground water	Other	Inactive
WELL 7 (01327) ABANDONED	32278	Yes	Well	Ground water	Other	Inactive
WELL 5 (22135) ABANDONED	20764	Yes	Well	Ground water	Other	Inactive
WELL 4 (22134) ABANDONED	20763	Yes	Well	Ground water	Other	Inactive
WELL 2 (22133) ABANDONED	20762	Yes	Well	Ground water	Other	Inactive
LOCKPORT	25279	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46429	No	Distribution System/Zone	-	-	Active
CHILD CARE FACILITY LEAD SAMPLING	46430	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	28938	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	31360	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	43828	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	43829	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	43830	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	43831	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	43832	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	43833	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	43873	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	43874	No	Sampling Station	-	-	Active
ELEV01 - 1.0 MG ELEVATED TANK	11879	No	Storage	-	-	Active
GR 03-2.5 MG GROUND TANK	33348	No	Storage	-	-	Active
DISTRIBUTION STANDPIPE STORAGE	14459	No	Storage	-	-	Inactive
DISTRIBUTION GROUND STORAGE	33347	No	Storage	-	-	Inactive
TAP 07-PRESURE STORAGE	34467	No	Storage	-	-	Inactive
DISTRIBUTION ELEVATED STORAGE	45222	No	Storage	-	-	Inactive
TP 03-BOOSTER STATION W/ CL2 GAS	17571	No	Treatment Plant	-	-	Active
TP 04-WELL 6 IRON FILTER PLANT	17572	No	Treatment Plant	-	-	Active
TP 11-WELL 10 (SHALLOW WELL)	33495	No	Treatment Plant	-	-	Active
TP 12-WELL 11	33496	No	Treatment Plant	-	-	Active
TP13 - WELL 12 TREATED W/ IRON FILTER	35325	No	Treatment Plant	-	-	Active
TP14 - WELL 13 IRON FILTER PLANT	39790	No	Treatment Plant	-	-	Active
TP15-WELL #14 IRON FILTER	41335	No	Treatment Plant	-	-	Active
T16-WELL #15 ION-EXCHANGE SOFTENING	43807	No	Treatment Plant	-	-	Active
TP17-WELL #15 & #10 BLENDING FOR RADIUM	43871	No	Treatment Plant	-	-	Active
TP 01-WELL 2 (INACTIVE)	17569	No	Treatment Plant	-	-	Inactive
TP 02-WELL 4 (INACTIVE)	17570	No	Treatment Plant	-	-	Inactive
TP 05-WELL 7	32547	No	Treatment Plant	-	-	Inactive
TP 06-WELL 9 ABANDONED	32863	No	Treatment Plant	-	-	Inactive
TP 07-WELL 1 (INACTIVE)	33350	No	Treatment Plant	-	-	Inactive

1 - 50 of 53

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 03-BOOSTER STATION W/ CL2 GAS	17571	Gaseous Chlorination, Post	Disinfection
TP 04-WELL 6 IRON FILTER PLANT	17572	Gaseous Chlorination, Pre	Disinfection
TP 04-WELL 6 IRON FILTER PLANT	17572	Gaseous Chlorination, Pre	Iron removal
TP 04-WELL 6 IRON FILTER PLANT	17572	Filtration, Pressure Sand	Iron removal
TP 04-WELL 6 IRON FILTER PLANT	17572	Filtration, Pressure Sand	Manganese removal
TP 04-WELL 6 IRON FILTER PLANT	17572	Fluoridation	Other
TP 04-WELL 6 IRON FILTER PLANT	17572	Gaseous Chlorination, Post	Disinfection
TP 05-WELL 7	32547	Fluoridation	Other
TP 05-WELL 7	32547	Filtration, Pressure Sand	Iron removal
TP 05-WELL 7	32547	Filtration, Pressure Sand	Manganese removal
TP 05-WELL 7	32547	Gaseous Chlorination, Pre	Disinfection
TP 05-WELL 7	32547	Gaseous Chlorination, Pre	Iron removal
TP 05-WELL 7	32547	Inhibitor, Polyphosphate	Corrosion control
TP 06-WELL 9 ABANDONED	32863	Gaseous Chlorination, Post	Disinfection
TP 06-WELL 9 ABANDONED	32863	Fluoridation	Other
TP 07-WELL 1 (INACTIVE)	33350	Hypochlorination, Post	Disinfection
TP 07-WELL 1 (INACTIVE)	33350	Fluoridation	Disinfection
TP 08- WELL 2	33351	Hypochlorination, Post	Disinfection
TP 08- WELL 2	33351	Fluoridation	Disinfection
TP 08- WELL 2	33351	Sequestration	Corrosion control
TP 10- WELL 4 (INACTIVE)	33353	Hypochlorination, Post	Disinfection
TP 11-WELL 10 (SHALLOW WELL)	33495	Gaseous Chlorination, Pre	Disinfection
TP 11-WELL 10 (SHALLOW WELL)	33495	Fluoridation	Other
TP 12-WELL 11	33496	Gaseous Chlorination, Post	Disinfection
TP 12-WELL 11	33496	Fluoridation	Other
TP13 - WELL 12 TREATED W/ IRON FILTER	35325	Fluoridation	Other
TP13 - WELL 12 TREATED W/ IRON FILTER	35325	Gaseous Chlorination, Pre	Iron removal
TP13 - WELL 12 TREATED W/ IRON FILTER	35325	Gaseous Chlorination, Post	Disinfection
TP13 - WELL 12 TREATED W/ IRON FILTER	35325	Filtration, Pressure Sand	Iron removal
TP14 - WELL 13 IRON FILTER PLANT	39790	Fluoridation	Other
TP14 - WELL 13 IRON FILTER PLANT	39790	Filtration, Pressure Sand	Iron removal
TP14 - WELL 13 IRON FILTER PLANT	39790	Gaseous Chlorination, Pre	Iron removal
TP14 - WELL 13 IRON FILTER PLANT	39790	Gaseous Chlorination, Post	Disinfection
TP15-WELL #14 IRON FILTER	41335	Fluoridation	Other
TP15-WELL #14 IRON FILTER	41335	Filtration, Pressure Sand	Iron removal
TP15-WELL #14 IRON FILTER	41335	Gaseous Chlorination, Pre	Iron removal
TP15-WELL #14 IRON FILTER	41335	Gaseous Chlorination, Post	Disinfection
T16-WELL #15 ION-EXCHANGE SOFTENING	43807	Ion Exchange	Radionuclides removal
T16-WELL #15 ION-EXCHANGE SOFTENING	43807	Gaseous Chlorination, Post	Disinfection
TP17-WELL #15 & #10 BLENDING FOR RADIUM	43871	Innovative	Radionuclides removal

1 - 40 of 40

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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