Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	IL0311620
PWS Name	LEMONT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	17500
County Served	Cook

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	Public Education	Lead and Copper Rule	Lead and Copper Rule	7013258	Open	31-AUG-2025	-	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	7013244	Returned to Compliance	01-OCT-2023	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	7013243	Returned to Compliance	30-DEC-2020	-	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7013241	Returned to Compliance	01-OCT-2015	31-DEC-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7013240	Returned to Compliance	01-JUL-2015	30-SEP-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7013238	Returned to Compliance	01-APR-2015	30-JUN-2015	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7013236	Returned to Compliance	01-JAN-2015	31-MAR-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7013237	Returned to Compliance	01-JAN-2015	31-MAR-2015	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7013234	Returned to Compliance	01-JUL-2014	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7013233	Returned to Compliance	01-JUL-2013	-	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7013208	Returned to Compliance	01-APR-2007	30-JUN-2007	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7013205	Returned to Compliance	01-JAN-2007	31-MAR-2007	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4025498	Known	01-MAR-1998	31-MAR-1998	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	3954498	Returned to Compliance	05-DEC-1997	10-APR-2001	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5058197	Returned to Compliance	01-JUL-1997	30-SEP-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5057497	Returned to Compliance	01-JUL-1997	30-SEP-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5058097	Returned to Compliance	01-APR-1997	30-JUN-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5057397	Returned to Compliance	01-APR-1997	30-JUN-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5057297	Returned to Compliance	01-JAN-1997	31-MAR-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5057997	Returned to Compliance	01-JAN-1997	31-MAR-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5057897	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5057197	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2074194	Known	01-DEC-1993	31-DEC-1993	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1451492	Returned to Compliance	18-FEB-1992	17-FEB-1996	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5057092	Known	01-JAN-1992	31-MAR-1992	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5057792	Known	01-JAN-1992	31-MAR-1992	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5056992	Known	01-DEC-1991	29-FEB-1992	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5057692	Known	01-DEC-1991	29-FEB-1992	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5057591	Known	01-SEP-1991	30-NOV-1991	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5056891	Known	01-SEP-1991	30-NOV-1991	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1292391	Known	01-JAN-1991	31-JAN-1991	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	1008089	Returned to Compliance	01-OCT-1988	30-SEP-1992	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	569388	Returned to Compliance	01-SEP-1988	31-AUG-1992	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	233785	Returned to Compliance	01-OCT-1984	30-SEP-1988	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	233884	Returned to Compliance	14-SEP-1984	13-SEP-1988	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	233681	Returned to Compliance	17-OCT-1980	16-OCT-1984	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7013080	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
9837143	7013244	SIF	State Public Notification received	02-JUL-2024	State	-
9837139	7013243	SOX	State Compliance achieved	15-JAN-2021	State	-
9837135	7013241	SOX	State Compliance achieved	04-MAR-2016	State	2016Q1 samples received 3/4/16. RAA for combined radium < mandatory detection levels. Statement of Compliance for W-2015-00018 received 3/17/16. pc
9837135	7013240	SOX	State Compliance achieved	04-MAR-2016	State	2016Q1 samples received 3/4/16. RAA for combined radium < mandatory detection levels. Statement of Compliance for W-2015-00018 received 3/17/16. pc
9837135	7013238	SOX	State Compliance achieved	04-MAR-2016	State	2016Q1 samples received 3/4/16. RAA for combined radium < mandatory detection levels. Statement of Compliance for W-2015-00018 received 3/17/16. pc
9837135	7013237	SOX	State Compliance achieved	04-MAR-2016	State	2016Q1 samples received 3/4/16. RAA for combined radium < mandatory detection levels. Statement of Compliance for W-2015-00018 received 3/17/16. pc
9837135	7013236	SOX	State Compliance achieved	04-MAR-2016	State	2016Q1 samples received 3/4/16. RAA for combined radium < mandatory detection levels. Statement of Compliance for W-2015-00018 received 3/17/16. pc
9837115	7013234	SIA	State Violation/Reminder Notice	18-JUL-2014	State	-
9837114	7013233	SOX	State Compliance achieved	07-AUG-2013	State	-
9837107	7013208	SOX	State Compliance achieved	13-AUG-2007	State	samples collected on 06/04/2007 but results not received until 08/13/2007
9837102	7013205	SOX	State Compliance achieved	08-JUN-2007	State	SAMPLE RESULTS RECEIVED
9836899	5058097	SOX	State Compliance achieved	18-JAN-1999	State	Picked first available 4010 sample in SDWIS at time. Previous results archived maybe.
9836899	5058197	SOX	State Compliance achieved	18-JAN-1999	State	Picked first available 4010 sample in SDWIS at time. Previous results archived maybe.
9836899	5057997	SOX	State Compliance achieved	18-JAN-1999	State	Picked first available 4010 sample in SDWIS at time. Previous results archived maybe.
9836899	5057897	SOX	State Compliance achieved	18-JAN-1999	State	Picked first available 4010 sample in SDWIS at time. Previous results archived maybe.
7090298	4025498	SIF	State Public Notification received	20-MAY-1998	State	-
6765798	3954498	SOX	State Compliance achieved	05-DEC-1997	State	-
9836797	5057497	SOX	State Compliance achieved	04-SEP-1997	State	Collected 4109 samples at both entry points
9837097	5057397	SOX	State Compliance achieved	11-JUN-1997	State	-
9836997	5057197	SOX	State Compliance achieved	17-MAR-1997	State	-
9836997	5057297	SOX	State Compliance achieved	17-MAR-1997	State	-
9836494	2074194	SIE	State Public Notification requested	22-JAN-1994	State	-
1253992	1451492	SOX	State Compliance achieved	04-APR-1992	State	-
9836092	5057092	SIF	State Public Notification received	26-MAR-1992	State	-
9836092	5057792	SIF	State Public Notification received	26-MAR-1992	State	-
885491	1292391	SIF	State Public Notification received	07-MAR-1991	State	-
648390	233681	SOX	State Compliance achieved	11-JUL-1990	State	-
648390	233884	SOX	State Compliance achieved	11-JUL-1990	State	-
648390	569388	SOX	State Compliance achieved	11-JUL-1990	State	-
648390	1008089	SOX	State Compliance achieved	11-JUL-1990	State	-
648390	233785	SOX	State Compliance achieved	11-JUL-1990	State	-

1 - 31 of 31

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 2 (20604) EMERGENCY	20312	Yes	Well	Ground water	Emergency	Active
WELL 6 (01587)	33903	Yes	Well	Ground water	Permanent	Active
WELL 4 (20606)	20314	Yes	Well	Ground water	Permanent	Active
WELL 3 (20605)	20313	Yes	Well	Ground water	Permanent	Active
WELL 5 (01101)	18897	Yes	Well	Ground water	Permanent	Active
LEMONT	23367	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46323	No	Distribution System/Zone	-	-	Active
CHILD CARE FACILITY LEAD SAMPLING	46328	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27026	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29448	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	45501	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	45502	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	45503	No	Sampling Station	-	-	Active
WATER QUALITY SAMPLING	45504	No	Sampling Station	-	-	Active
GR04-500K GALLON GROUND TANK @ TP05	12033	No	Storage	-	-	Active
ELEV1-300K GALLON ELEVATED TANK	44240	No	Storage	-	-	Active
ELEV2-750K GALLON ELEVATED TANK	44241	No	Storage	-	-	Active
DISTRIBUTION ELEVATED STORAGE	10976	No	Storage	-	-	Inactive
TP 01-WELL 2 (EMERGENCY)	14770	No	Treatment Plant	-	-	Active
TP 02-WELL 3	14771	No	Treatment Plant	-	-	Active
TP 03-WELL 4	14772	No	Treatment Plant	-	-	Active
TP 04-WELL 5	14773	No	Treatment Plant	-	-	Active
TP 05-WELL 6	34566	No	Treatment Plant	-	-	Active

1 - 23 of 23

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-WELL 2 (EMERGENCY)	14770	Gaseous Chlorination, Pre	Disinfection
TP 02-WELL 3	14771	Gaseous Chlorination, Post	Disinfection
TP 02-WELL 3	14771	Ion Exchange	Radionuclides removal
TP 02-WELL 3	14771	pH Adjustment, Pre	Radionuclides removal
TP 03-WELL 4	14772	Gaseous Chlorination, Post	Disinfection
TP 03-WELL 4	14772	Ion Exchange	Radionuclides removal
TP 03-WELL 4	14772	pH Adjustment, Pre	Radionuclides removal
TP 04-WELL 5	14773	Gaseous Chlorination, Post	Disinfection
TP 04-WELL 5	14773	Ion Exchange	Radionuclides removal
TP 04-WELL 5	14773	pH Adjustment, Pre	Radionuclides removal
TP 05-WELL 6	34566	pH Adjustment, Pre	Radionuclides removal
TP 05-WELL 6	34566	Ion Exchange	Radionuclides removal
TP 05-WELL 6	34566	Gaseous Chlorination, Post	Disinfection

1 - 13 of 13

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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