Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	IL0991050
PWS Name	SENECA
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	2353
County Served	LaSalle

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 and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7142808	Returned to Compliance	01-SEP-2015	31-AUG-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7142807	Returned to Compliance	01-SEP-2015	31-AUG-2016	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7142806	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)	7142706	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)	7142505	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)	7142305	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)	7142105	Returned to Compliance	01-OCT-2004	31-DEC-2004	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7141004	Returned to Compliance	01-JUL-2003	30-SEP-2003	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7140703	Returned to Compliance	01-JAN-2003	31-MAR-2003	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5204400	Returned to Compliance	07-SEP-2000	30-SEP-2002	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2641894	Known	01-JUL-1994	31-JUL-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1971793	Known	01-AUG-1993	31-AUG-1993	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1971893	Returned to Compliance	01-AUG-1993	20-MAR-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1661093	Known	01-NOV-1992	30-NOV-1992	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1584892	Known	01-AUG-1992	31-AUG-1992	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1105689	Returned to Compliance	01-AUG-1989	31-JUL-1993	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	258085	Returned to Compliance	23-AUG-1985	22-AUG-1989	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7140180	Known	30-JUN-1977	29-JUN-1981	No

1 - 18 of 18

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
4515709	7142807	SIF	State Public Notification received	09-MAY-2017	State	-
4515709	7142808	SIF	State Public Notification received	09-MAY-2017	State	-
4515706	7142806	SIF	State Public Notification received	14-FEB-2006	State	-
4515606	7142706	SOX	State Compliance achieved	08-DEC-2005	State	RAA is 5.4 pCi/L for the fourth quarter of 2005, so returned to compliance without the installation of treatment. gf sample results rec'd on 1/31/06
4515606	7142305	SOX	State Compliance achieved	08-DEC-2005	State	RAA is 5.4 pCi/L for the fourth quarter of 2005, so returned to compliance without the installation of treatment. gf sample results rec'd on 1/31/06
4515606	7142105	SOX	State Compliance achieved	08-DEC-2005	State	RAA is 5.4 pCi/L for the fourth quarter of 2005, so returned to compliance without the installation of treatment. gf sample results rec'd on 1/31/06
4515606	7142505	SOX	State Compliance achieved	08-DEC-2005	State	RAA is 5.4 pCi/L for the fourth quarter of 2005, so returned to compliance without the installation of treatment. gf sample results rec'd on 1/31/06
4511804	7141004	SOX	State Compliance achieved	03-DEC-2003	State	-
4511403	7140703	SIF	State Public Notification received	30-JUN-2003	State	-
530401	5204400	SOX	State Compliance achieved	31-MAR-2001	State	-
4510595	1971893	SOX	State Compliance achieved	20-MAR-1995	State	-
4510595	1105689	SOX	State Compliance achieved	20-MAR-1995	State	-
4510595	258085	SOX	State Compliance achieved	20-MAR-1995	State	-
3940495	2641894	SIE	State Public Notification requested	02-OCT-1994	State	-
2120194	1971793	SIA	State Violation/Reminder Notice	10-OCT-1993	State	-
1771293	1661093	SIE	State Public Notification requested	09-JAN-1993	State	-
1566293	1584892	SIE	State Public Notification requested	11-OCT-1992	State	-

1 - 17 of 17

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 1 (11520) ABANDONED	19424	Yes	Well	Ground water	Other	Inactive
WELL 2 (11521)	19425	Yes	Well	Ground water	Permanent	Active
WELL 3 (00812)	18618	Yes	Well	Ground water	Permanent	Active
SENECA	24278	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46354	No	Distribution System/Zone	-	-	Active
CHILD CARE FACILITY LEAD SAMPLING	46355	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27937	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	30359	No	Sampling Station	-	-	Active
STANDPIPE - 300000-GAL	14400	No	Storage	-	-	Active
TP02 GROUND STORAGE	44675	No	Storage	-	-	Active
TAP 01 GROUND STORAGE	12914	No	Storage	-	-	Inactive
TP 02-HMO FILTERS FOR RADIUM REMOVAL	16298	No	Treatment Plant	-	-	Active
TP 01-WELL 1 (INACTIVE)	16297	No	Treatment Plant	-	-	Inactive

1 - 13 of 13

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 02-HMO FILTERS FOR RADIUM REMOVAL	16298	Fluoridation	Other
TP 02-HMO FILTERS FOR RADIUM REMOVAL	16298	Aeration, Spray	Iron removal
TP 02-HMO FILTERS FOR RADIUM REMOVAL	16298	Gaseous Chlorination, Post	Disinfection
TP 02-HMO FILTERS FOR RADIUM REMOVAL	16298	Innovative	Radionuclides removal
TP 02-HMO FILTERS FOR RADIUM REMOVAL	16298	Filtration, Rapid Sand	Radionuclides removal
TP 02-HMO FILTERS FOR RADIUM REMOVAL	16298	Gaseous Chlorination, Pre	Disinfection
TP 02-HMO FILTERS FOR RADIUM REMOVAL	16298	Gaseous Chlorination, Pre	Iron removal
TP 02-HMO FILTERS FOR RADIUM REMOVAL	16298	Inhibitor, Orthophosphate	Corrosion control

1 - 8 of 8

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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