Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	IL0430833
PWS Name	WARRENVILLE
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	12350
County Served	DuPage

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 Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7119385	Returned to Compliance	01-JUL-2025	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7119316	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	7119337	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	7119357	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	7119336	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	7119356	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	7119355	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	7119335	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	7119354	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	7119334	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	7119333	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	7119353	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	7119352	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	7119332	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	7119351	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	7119331	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	7119350	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	7119330	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	7119329	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	7119349	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	7119348	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	7119328	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	7119347	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	7119327	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	7119326	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	7119346	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	7119325	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	7119345	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	7119318	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	7119317	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	7119344	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	7119324	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	7119343	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	7119323	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	7119322	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	7119342	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	7119341	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	7119321	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	7119340	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	7119320	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	7119319	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	7119338	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	7119358	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	7119339	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7119314	Returned to Compliance	01-JUL-2016	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7119312	Returned to Compliance	01-JUL-2008	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	7119311	Returned to Compliance	01-NOV-2007	30-NOV-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7119310	Returned to Compliance	01-OCT-2007	31-DEC-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7119307	Returned to Compliance	01-OCT-2006	31-DEC-2006	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7118880	Known	30-JUN-1977	29-JUN-1981	No

1 - 50 of 50

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
507602	7119385	SOX	State Compliance achieved	15-SEP-2025	State	-
507595	7119319	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119320	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119321	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119322	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119323	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119324	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119325	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119326	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119327	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119328	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119329	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119330	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119331	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119332	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119333	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119334	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119335	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119336	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119337	SIF	State Public Notification received	05-JUN-2023	State	-
507595	7119338	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119339	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119340	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119341	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119342	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119343	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119344	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119345	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119346	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119347	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119348	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119349	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119350	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119351	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119352	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119353	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119354	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119355	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119356	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119357	SIF	State Public Notification received	05-JUN-2023	State	-
507594	7119358	SIF	State Public Notification received	05-JUN-2023	State	-
507597	7119317	SIF	State Public Notification received	05-JUN-2023	State	-
507596	7119318	SIF	State Public Notification received	05-JUN-2023	State	-
507598	7119316	SOX	State Compliance achieved	07-DEC-2022	State	-
507521	7119314	SOX	State Compliance achieved	19-MAY-2017	State	-
507518	7119312	SOX	State Compliance achieved	22-JUL-2008	State	CCR issued 7/29/08 (LATE), IEPA rcvd copy 7/22/08.
507519	7119311	SOX	State Compliance achieved	01-JUN-2008	State	-
507516	7119310	SOX	State Compliance achieved	19-DEC-2007	State	-
507507	7119307	SOX	State Compliance achieved	22-NOV-2006	State	-

1 - 49 of 49

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 2 (20765) ABANDONED	20468	Yes	Well	Ground water	Other	Inactive
WELL 12 (01842)	35174	Yes	Well	Ground water	Permanent	Active
WELL 11 (01158)	18952	Yes	Well	Ground water	Permanent	Active
WELL 10 (00622)	18432	Yes	Well	Ground water	Permanent	Active
WELL 9 (00309)	18129	Yes	Well	Ground water	Permanent	Active
WELL 8 (20769) (INACTIVE)	20472	Yes	Well	Ground water	Other	Inactive
WELL 7 (20768) ABANDONED	20471	Yes	Well	Ground water	Other	Inactive
WELL 5 (20767)	20470	Yes	Well	Ground water	Other	Inactive
WELL 4 (20766) ABANDONED	20469	Yes	Well	Ground water	Other	Inactive
WARRENVILLE	23594	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45610	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45896	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27253	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29675	No	Sampling Station	-	-	Active
ELEV1 - 0.5MG ELEVATED STORAGE	11095	No	Storage	-	-	Active
TAP 01 GROUND STORAGE	12731	No	Storage	-	-	Active
ELEV2 - 0.5MG ELEVATED STORAGE	44642	No	Storage	-	-	Active
ELEV3 - 1.0MG ELEVATED STORAGE	44643	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12135	No	Storage	-	-	Inactive
DISTRIBUTION PRESSURE STORAGE	13300	No	Storage	-	-	Inactive
TAP 03 PRESSURE STORAGE	13990	No	Storage	-	-	Inactive
TAP 04 PRESSURE STORAGE	13991	No	Storage	-	-	Inactive
TP 01-WELL 11	15243	No	Treatment Plant	-	-	Active
TP 02-WELL 12	15244	No	Treatment Plant	-	-	Active
TP 06-WELL 9	15248	No	Treatment Plant	-	-	Active
TP 07-WELL 10	15249	No	Treatment Plant	-	-	Active
WELL	15242	No	Treatment Plant	-	-	Inactive
TP 03-WELL 5	15245	No	Treatment Plant	-	-	Inactive
TP 04-WELL 7 ABANDONED	15246	No	Treatment Plant	-	-	Inactive
TP 05-WELL 8 INACTIVE	15247	No	Treatment Plant	-	-	Inactive

1 - 30 of 30

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-WELL 11	15243	Fluoridation	Other
TP 01-WELL 11	15243	Hypochlorination, Pre	Disinfection
TP 01-WELL 11	15243	Hypochlorination, Pre	Iron removal
TP 01-WELL 11	15243	Sequestration	Iron removal
TP 01-WELL 11	15243	Filtration, Pressure Sand	Iron removal
TP 02-WELL 12	15244	Fluoridation	Other
TP 02-WELL 12	15244	Filtration, Pressure Sand	Iron removal
TP 02-WELL 12	15244	Hypochlorination, Pre	Disinfection
TP 02-WELL 12	15244	Hypochlorination, Pre	Iron removal
TP 02-WELL 12	15244	Sequestration	Iron removal
TP 05-WELL 8 INACTIVE	15247	Fluoridation	Other
TP 05-WELL 8 INACTIVE	15247	Gaseous Chlorination, Pre	Disinfection
TP 06-WELL 9	15248	Fluoridation	Other
TP 06-WELL 9	15248	Filtration, Pressure Sand	Iron removal
TP 06-WELL 9	15248	Filtration, Pressure Sand	Inorganics removal
TP 06-WELL 9	15248	Hypochlorination, Pre	Disinfection
TP 06-WELL 9	15248	Hypochlorination, Pre	Iron removal
TP 06-WELL 9	15248	Sequestration	Iron removal
TP 07-WELL 10	15249	Fluoridation	Other
TP 07-WELL 10	15249	Filtration, Pressure Sand	Iron removal
TP 07-WELL 10	15249	Filtration, Pressure Sand	Inorganics removal
TP 07-WELL 10	15249	Hypochlorination, Pre	Disinfection
TP 07-WELL 10	15249	Hypochlorination, Pre	Iron removal
TP 07-WELL 10	15249	Sequestration	Iron removal

1 - 24 of 24

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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