Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	IL0930150
PWS Name	OSWEGO
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	38169
County Served	Kendall

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 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7049860	Returned to Compliance	01-SEP-2024	30-SEP-2024	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7049859	Returned to Compliance	01-JUL-2022	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7049856	Returned to Compliance	01-JUL-2017	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7049854	Returned to Compliance	14-MAY-2017	-	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7049853	Returned to Compliance	01-JAN-2017	31-MAR-2017	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7049852	Returned to Compliance	01-JUL-2016	30-SEP-2016	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7049851	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7049827	Returned to Compliance	01-APR-2010	30-JUN-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7049818	Returned to Compliance	01-JAN-2007	31-MAR-2007	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7049606	Returned to Compliance	01-JUL-2006	30-SEP-2006	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7049506	Returned to Compliance	01-APR-2006	30-JUN-2006	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7048906	Returned to Compliance	01-JAN-2006	31-MAR-2006	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7048806	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)	7048506	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)	7048305	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)	7048105	Returned to Compliance	01-JAN-2005	31-MAR-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7048005	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)	7044405	Returned to Compliance	01-OCT-2004	31-DEC-2004	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7044305	Returned to Compliance	01-AUG-2004	31-AUG-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7044105	Returned to Compliance	01-JUL-2004	30-SEP-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7043504	Returned to Compliance	01-APR-2004	30-JUN-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7043204	Returned to Compliance	01-JAN-2004	31-MAR-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7042904	Returned to Compliance	01-OCT-2003	31-DEC-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7042404	Returned to Compliance	01-JUL-2003	30-SEP-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7041703	Returned to Compliance	01-APR-2003	30-JUN-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7041403	Returned to Compliance	01-JAN-2003	31-MAR-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7041103	Returned to Compliance	01-OCT-2002	31-DEC-2002	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5334801	Returned to Compliance	31-MAR-2001	30-SEP-2002	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	4921600	Returned to Compliance	19-OCT-1999	-	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5064099	Known	01-APR-1999	30-JUN-1999	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5064199	Known	01-APR-1999	30-JUN-1999	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	4425499	Returned to Compliance	01-FEB-1999	30-SEP-2002	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	4105198	Known	01-APR-1998	30-APR-1998	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	4039998	Known	01-MAR-1998	31-MAR-1998	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5391695	Returned to Compliance	01-MAR-1995	31-JAN-1999	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	2896495	Returned to Compliance	01-FEB-1995	31-JAN-1999	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	1574092	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	1575492	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	1575392	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	1575292	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	1575192	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	1575092	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	1574992	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	1574892	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	1574792	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	1574692	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	1574592	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	1574492	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	1574392	Returned to Compliance	01-JUL-1992	30-SEP-1992	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	1574292	Returned to Compliance	01-JUL-1992	30-SEP-1992	No

1 - 50 of 56

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9029551	7049860	SIF	State Public Notification received	10-JUN-2025	State	-
9029547	7049859	SOX	State Compliance achieved	09-JUN-2023	State	-
9029545	7049856	SOX	State Compliance achieved	25-JUN-2018	State	-
9029544	7049853	SOX	State Compliance achieved	27-AUG-2017	State	PWS was under a CCA and needed to show reliable and consistent compliance before SOX. 8/27/17 was the actual date of submittal of the sample that brought TP02 back into compliance with the combined radium MCL. pc 4/18/18
9029541	7049854	SIA	State Violation/Reminder Notice	13-JUN-2017	State	-
9029539	7049852	SIF	State Public Notification received	18-MAY-2017	State	-
9029530	7049851	SIF	State Public Notification received	11-SEP-2014	State	09/11/14: Cert form and PN copy OK. pc 7/24/14: The certification form was not sent in, only the PN checklist. PWS notified. I rejected after emails with Gerald Weaver. pc
9029522	7049827	SIF	State Public Notification received	18-NOV-2010	State	-
9029512	7049818	SOX	State Compliance achieved	24-APR-2007	State	SAMPLE RECEIVED
9028807	7049606	SIA	State Violation/Reminder Notice	12-OCT-2006	State	-
9027906	7049506	SIA	State Violation/Reminder Notice	10-JUL-2006	State	-
9028506	1301391	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7048906	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7048806	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7048506	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7048305	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7048105	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7044405	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7044105	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7043504	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7043204	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7042904	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7042404	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7041703	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7041403	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	7041103	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	5391695	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	4425499	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	2896495	SOX	State Compliance achieved	23-MAY-2006	State	-
9028506	250284	SOX	State Compliance achieved	23-MAY-2006	State	-
9026305	7048005	SIF	State Public Notification received	04-APR-2005	State	-
9025705	5334801	SOX	State Compliance achieved	25-MAR-2005	State	Net alpha value on TP05 (the only tap exceeding) is at 14.8. SOX added to all violations. gf
9028705	7044305	SOX	State Compliance achieved	01-MAR-2005	State	Supply without a coliform violation for 6 months.
9014600	4921600	SOX	State Compliance achieved	16-MAR-2000	State	-
7142398	4105198	SIE	State Public Notification requested	27-JUN-1998	State	-
7142198	4039998	SIE	State Public Notification requested	30-MAY-1998	State	-
2103993	1575192	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1575092	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1574992	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1574892	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1574792	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1574692	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1574592	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1574492	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1574392	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1574292	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1574192	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1575392	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1575492	SOX	State Compliance achieved	30-JUL-1993	State	-
2103993	1575592	SOX	State Compliance achieved	30-JUL-1993	State	-

1 - 50 of 53

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 5 (00872) ABANDONDED	18678	Yes	Well	Ground water	Other	Inactive
WELL 11 (01874)	39707	Yes	Well	Ground water	Permanent	Active
WELL 9 (01629)	34109	Yes	Well	Ground water	Permanent	Active
WELL 10 (01630)	34108	Yes	Well	Ground water	Permanent	Active
WELL 8 (01398)	32576	Yes	Well	Ground water	Permanent	Active
WELL 4 (20132)	19848	Yes	Well	Ground water	Permanent	Active
WELL 3 (20131)	19847	Yes	Well	Ground water	Permanent	Active
WELL 7 (01141)	18936	Yes	Well	Ground water	Permanent	Active
WELL 6 (00738)	18544	Yes	Well	Ground water	Permanent	Active
WELL 1 (20130) (ABANDONED)	19846	Yes	Well	Ground water	Other	Inactive
OSWEGO	24093	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46391	No	Distribution System/Zone	-	-	Active
CHILD CARE FACILITY LEAD SAMPLING	46392	No	Distribution System/Zone	-	-	Active
PF01 - MIDDLE ZONE BOOSTER STATION	46861	No	Pump Facility	-	-	Active
PF02 - BOOSTER STATION #2	46862	No	Pump Facility	-	-	Active
PF03 - BOOSTER STATION #3	46863	No	Pump Facility	-	-	Active
GENERIC FINISHED SAMPLING STATION	27752	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	30174	No	Sampling Station	-	-	Active
ELEV1 - 500,000GAL ELEVATED TANK	11328	No	Storage	-	-	Active
ELEV2 - 300,000GAL ELEVATED TANK	46864	No	Storage	-	-	Active
ELEV3 - 1.5MG ELEVATED TANK	46865	No	Storage	-	-	Active
ELEV4 - 1.5MG ELEVATED TANK	46866	No	Storage	-	-	Active
ELEV5 - 1.5MG ELEVATED TANK	46867	No	Storage	-	-	Active
TP 01-Z88 TREATED WATER FROM WELL 3	15937	No	Treatment Plant	-	-	Active
TP 02-Z88 TREATED WATER FROM WELL 4	15938	No	Treatment Plant	-	-	Active
TP 03-Z88 TREATED WATER FROM WELL 6	15939	No	Treatment Plant	-	-	Active
TP 05-Z88 TREATED WATER FROM WELL 7	15941	No	Treatment Plant	-	-	Active
TP 06-Z88 TREATED WATER FROM WELL 8	32869	No	Treatment Plant	-	-	Active
TP 07-Z88 TREATED WATER FROM WELL 9	34468	No	Treatment Plant	-	-	Active
TP 08-Z88 TREATED WATER FROM WELL 10	34469	No	Treatment Plant	-	-	Active
TP09 -Z88 TREATED WATER FROM WELL 11	39708	No	Treatment Plant	-	-	Active
TP 04-WELL 5 (INACTIVE)	15940	No	Treatment Plant	-	-	Inactive

1 - 32 of 32

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-Z88 TREATED WATER FROM WELL 3	15937	Innovative	Radionuclides removal
TP 01-Z88 TREATED WATER FROM WELL 3	15937	Gaseous Chlorination, Pre	Disinfection
TP 01-Z88 TREATED WATER FROM WELL 3	15937	Sequestration	Iron removal
TP 02-Z88 TREATED WATER FROM WELL 4	15938	Innovative	Radionuclides removal
TP 02-Z88 TREATED WATER FROM WELL 4	15938	Gaseous Chlorination, Pre	Disinfection
TP 02-Z88 TREATED WATER FROM WELL 4	15938	Sequestration	Iron removal
TP 03-Z88 TREATED WATER FROM WELL 6	15939	Innovative	Radionuclides removal
TP 03-Z88 TREATED WATER FROM WELL 6	15939	Gaseous Chlorination, Pre	Disinfection
TP 03-Z88 TREATED WATER FROM WELL 6	15939	Sequestration	Iron removal
TP 05-Z88 TREATED WATER FROM WELL 7	15941	Innovative	Radionuclides removal
TP 05-Z88 TREATED WATER FROM WELL 7	15941	Gaseous Chlorination, Pre	Disinfection
TP 05-Z88 TREATED WATER FROM WELL 7	15941	Sequestration	Iron removal
TP 06-Z88 TREATED WATER FROM WELL 8	32869	Ion Exchange	Radionuclides removal
TP 06-Z88 TREATED WATER FROM WELL 8	32869	Gaseous Chlorination, Post	Disinfection
TP 06-Z88 TREATED WATER FROM WELL 8	32869	Inhibitor, Orthophosphate	Corrosion control
TP 07-Z88 TREATED WATER FROM WELL 9	34468	Inhibitor, Orthophosphate	Corrosion control
TP 07-Z88 TREATED WATER FROM WELL 9	34468	Gaseous Chlorination, Post	Disinfection
TP 07-Z88 TREATED WATER FROM WELL 9	34468	Ion Exchange	Radionuclides removal
TP 08-Z88 TREATED WATER FROM WELL 10	34469	Gaseous Chlorination, Post	Disinfection
TP 08-Z88 TREATED WATER FROM WELL 10	34469	Inhibitor, Orthophosphate	Corrosion control
TP 08-Z88 TREATED WATER FROM WELL 10	34469	Ion Exchange	Radionuclides removal
TP09 -Z88 TREATED WATER FROM WELL 11	39708	Gaseous Chlorination, Pre	Disinfection
TP09 -Z88 TREATED WATER FROM WELL 11	39708	Inhibitor, Polyphosphate	Corrosion control
TP09 -Z88 TREATED WATER FROM WELL 11	39708	Innovative	Radionuclides 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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