Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OR4100067
PWS Name	AURORA, CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1133
County Served	Marion

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, Source Water (GWR)	Ground Water Rule	E. COLI	900643633	Returned to Compliance	03-NOV-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	900643632	Returned to Compliance	01-JUL-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	900643629	Returned to Compliance	01-JUL-2024	-	No
MR	Failure to Conduct Assessment Monitoring	Ground Water Rule	COLIPHAGE	900643631	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	900643628	Returned to Compliance	01-OCT-2023	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	900643627	Returned to Compliance	01-JUL-2023	-	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	900643626	Returned to Compliance	01-JAN-2023	31-MAR-2023	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	900643625	Returned to Compliance	01-JAN-2022	31-MAR-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	900643624	Returned to Compliance	01-OCT-2019	30-SEP-2020	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	900643623	Returned to Compliance	01-OCT-2019	30-SEP-2020	No
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	900643634	Known	01-JAN-2017	31-DEC-2025	No
MR	Failure to Conduct Assessment Monitoring	Ground Water Rule	COLIPHAGE	900643619	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Failure to Conduct Assessment Monitoring	Ground Water Rule	COLIPHAGE	900643618	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Failure to Conduct Assessment Monitoring	Ground Water Rule	COLIPHAGE	900643620	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	900643622	Returned to Compliance	01-OCT-2014	30-SEP-2015	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	900643621	Returned to Compliance	01-OCT-2014	30-SEP-2015	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	900643615	Returned to Compliance	01-JUL-2014	30-SEP-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	900643616	Returned to Compliance	01-JAN-2014	30-SEP-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	900643617	Returned to Compliance	01-JAN-2014	30-SEP-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	900643611	Returned to Compliance	01-JUL-2012	31-JUL-2012	No
MR	Failure to Conduct Assessment Monitoring	Ground Water Rule	COLIPHAGE	900643613	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Failure to Conduct Assessment Monitoring	Ground Water Rule	COLIPHAGE	900643612	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Failure to Conduct Assessment Monitoring	Ground Water Rule	COLIPHAGE	900643614	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	900643609	Returned to Compliance	01-OCT-2011	31-OCT-2011	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	900643608	Returned to Compliance	01-JUL-2011	-	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	644309	Returned to Compliance	01-JAN-2009	31-MAR-2009	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	644109	Returned to Compliance	01-DEC-2008	31-DEC-2008	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	644209	Returned to Compliance	01-OCT-2008	31-DEC-2008	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	644009	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	643908	Returned to Compliance	01-JAN-2008	31-MAR-2008	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	643808	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	643708	Returned to Compliance	01-APR-2007	30-JUN-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	643505	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	643404	Returned to Compliance	01-OCT-2003	31-OCT-2003	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	643203	Returned to Compliance	19-OCT-2002	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	503702	Returned to Compliance	01-JUL-2002	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	234402	Returned to Compliance	19-OCT-2001	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	643101	Returned to Compliance	01-JUL-2001	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	590398	Returned to Compliance	01-JAN-1998	31-DEC-1998	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	23098	Returned to Compliance	01-NOV-1997	30-NOV-1997	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	229996	Returned to Compliance	01-MAR-1996	31-MAR-1996	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	69595	Returned to Compliance	01-DEC-1994	31-DEC-1994	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	37295	Returned to Compliance	01-NOV-1994	30-NOV-1994	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	6400580	Known	01-JUN-1976	31-MAY-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	6400780	Known	01-JUN-1976	31-MAY-1980	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
648	900643633	SOX	State Compliance achieved	10-DEC-2025	State	-
647	900643632	SOX	State Compliance achieved	24-JUL-2025	State	-
646	900643629	SOX	State Compliance achieved	24-APR-2025	State	-
646	900643627	SOX	State Compliance achieved	24-APR-2025	State	-
645	900643631	SOX	State Compliance achieved	13-MAR-2025	State	-
644	900643628	SOX	State Compliance achieved	31-JAN-2024	State	-
643	900643626	SOX	State Compliance achieved	24-APR-2023	State	-
642	900643625	SOX	State Compliance achieved	23-JUN-2022	State	-
641	900643624	SOX	State Compliance achieved	06-OCT-2021	State	-
641	900643623	SOX	State Compliance achieved	06-OCT-2021	State	-
639	900643622	SOX	State Compliance achieved	14-OCT-2016	State	-
639	900643621	SOX	State Compliance achieved	14-OCT-2016	State	-
640	900643620	SOX	State Compliance achieved	05-OCT-2016	State	-
640	900643619	SOX	State Compliance achieved	05-OCT-2016	State	-
640	900643618	SOX	State Compliance achieved	05-OCT-2016	State	-
638	900643617	SOX	State Compliance achieved	19-OCT-2015	State	-
638	900643616	SOX	State Compliance achieved	19-OCT-2015	State	-
637	900643615	SOX	State Compliance achieved	06-OCT-2015	State	-
636	900643614	SOX	State Compliance achieved	18-SEP-2013	State	-
636	900643613	SOX	State Compliance achieved	18-SEP-2013	State	-
636	900643612	SOX	State Compliance achieved	18-SEP-2013	State	-
633	900643611	SIA	State Violation/Reminder Notice	01-OCT-2012	State	-
634	900643608	SOX	State Compliance achieved	08-MAY-2012	State	-
627	900643609	SIA	State Violation/Reminder Notice	29-NOV-2011	State	-
609	644009	SOX	State Compliance achieved	08-JUL-2009	State	-
609	644309	SOX	State Compliance achieved	08-JUL-2009	State	-
609	644209	SOX	State Compliance achieved	08-JUL-2009	State	-
621	644109	SOX	State Compliance achieved	20-JAN-2009	State	-
608	643908	SOX	State Compliance achieved	23-SEP-2008	State	AS SNC 89303
608	643808	SOX	State Compliance achieved	23-SEP-2008	State	AS SNC 89303
608	643708	SOX	State Compliance achieved	23-SEP-2008	State	AS SNC 89303
610	643505	SOX	State Compliance achieved	03-MAY-2006	State	-
622	643404	SOX	State Compliance achieved	09-MAR-2004	State	-
103	234402	SOX	State Compliance achieved	07-MAY-2003	State	VALIDATED System Submitted CCR Cert for CY 2002 on 05/07/2003 - Migrated SOX 08/30/2004.
403	643203	SOX	State Compliance achieved	07-MAY-2003	State	VALIDATED System Submitted CCR Cert for CY 2002 on 05/07/2003 - Migrated SOX 08/30/2004.
303	643101	SOX	State Compliance achieved	03-APR-2003	State	VALIDATED System Submitted CCR for CY 2002 on 04/03/2003 - Migrated SOX 08/30/2004.
203	503702	SOX	State Compliance achieved	03-APR-2003	State	VALIDATED System Submitted CCR for CY 2002 on 04/03/2003 - Migrated SOX 08/30/2004.
503	590398	SOX	State Compliance achieved	10-JAN-2003	State	VALIDATED Migrated SOX 10/21/2004 Due to Sample #20021029-030I Taken 10/29/2002.
618	23098	SOX	State Compliance achieved	03-AUG-2001	State	-
624	37295	SOX	State Compliance achieved	03-AUG-2001	State	-
619	69595	SOX	State Compliance achieved	03-AUG-2001	State	-
620	229996	SOX	State Compliance achieved	03-AUG-2001	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
RIVER WELL (WELL #1)	1607	Yes	Well	Ground water	Other	Inactive
PARK WELL #5	22551	Yes	Well	Ground water	Seasonal	Active
PARK WELL #3	1606	Yes	Well	Ground water	Permanent	Inactive
PARK WELL #4	1605	Yes	Well	Ground water	Permanent	Active
COMMON HEADER FOR WTP-A	19050	No	Common Headers	-	-	Active
COMMON HEADER FOR WTP-B	19051	No	Common Headers	-	-	Inactive
Distribution System	6774	No	Distribution System/Zone	-	-	Active
EP FOR WELLS #4 & #5	12406	No	Sampling Station	-	-	Active
EP FOR RIVER WELL (WELL #1)	12407	No	Sampling Station	-	-	Inactive
TP FOR WELLS #4 & #5	34	No	Treatment Plant	-	-	Active
TP FOR RIVER WELL (WELL #1)	35	No	Treatment Plant	-	-	Inactive

1 - 11 of 11

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP FOR WELLS #4 & #5	34	Innovative	Other
TP FOR WELLS #4 & #5	34	Filtration, Greensand	Iron removal
TP FOR WELLS #4 & #5	34	Innovative	Inorganics removal

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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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