Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OR4100958
PWS Name	YONCALLA, CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1050
County Served	Douglas

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 Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	901205260	Open	01-OCT-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	901205255	Open	01-JUL-2025	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205257	Returned to Compliance	01-JUL-2025	31-JUL-2025	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205259	Returned to Compliance	01-JUL-2025	31-JUL-2025	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205258	Returned to Compliance	01-JUL-2025	31-JUL-2025	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	901205254	Returned to Compliance	01-JUL-2024	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205242	Returned to Compliance	01-FEB-2024	29-FEB-2024	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205241	Returned to Compliance	01-FEB-2024	29-FEB-2024	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205243	Returned to Compliance	01-FEB-2024	29-FEB-2024	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	901205240	Returned to Compliance	01-JUL-2023	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205237	Returned to Compliance	01-MAR-2022	31-MAR-2022	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205238	Returned to Compliance	01-MAR-2022	31-MAR-2022	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205236	Returned to Compliance	01-MAR-2022	31-MAR-2022	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205235	Returned to Compliance	01-MAR-2022	31-MAR-2022	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205232	Returned to Compliance	01-NOV-2021	30-NOV-2021	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205234	Returned to Compliance	01-NOV-2021	30-NOV-2021	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205233	Returned to Compliance	01-NOV-2021	30-NOV-2021	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205229	Returned to Compliance	01-JUL-2020	31-JUL-2020	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205231	Returned to Compliance	01-JUL-2020	31-JUL-2020	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205230	Returned to Compliance	01-JUL-2020	31-JUL-2020	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205228	Returned to Compliance	01-OCT-2018	31-OCT-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205227	Returned to Compliance	01-OCT-2018	31-OCT-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205226	Returned to Compliance	01-OCT-2018	31-OCT-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205223	Returned to Compliance	01-MAY-2018	31-MAY-2018	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205225	Returned to Compliance	01-MAY-2018	31-MAY-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205224	Returned to Compliance	01-MAY-2018	31-MAY-2018	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	901205222	Returned to Compliance	01-MAR-2018	31-MAR-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205219	Returned to Compliance	01-FEB-2018	28-FEB-2018	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205221	Returned to Compliance	01-FEB-2018	28-FEB-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205220	Returned to Compliance	01-FEB-2018	28-FEB-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205216	Returned to Compliance	01-JAN-2018	31-JAN-2018	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205218	Returned to Compliance	01-JAN-2018	31-JAN-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205217	Returned to Compliance	01-JAN-2018	31-JAN-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205214	Returned to Compliance	01-OCT-2017	31-OCT-2017	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205213	Returned to Compliance	01-OCT-2017	31-OCT-2017	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205212	Returned to Compliance	01-OCT-2017	31-OCT-2017	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205210	Returned to Compliance	01-DEC-2016	31-DEC-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205209	Returned to Compliance	01-DEC-2016	31-DEC-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205211	Returned to Compliance	01-DEC-2016	31-DEC-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205206	Returned to Compliance	01-AUG-2016	31-AUG-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205207	Returned to Compliance	01-AUG-2016	31-AUG-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205208	Returned to Compliance	01-AUG-2016	31-AUG-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205204	Returned to Compliance	01-JUN-2016	30-JUN-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205205	Returned to Compliance	01-JUN-2016	30-JUN-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205203	Returned to Compliance	01-JUN-2016	30-JUN-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205201	Returned to Compliance	01-FEB-2016	29-FEB-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205200	Returned to Compliance	01-FEB-2016	29-FEB-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205202	Returned to Compliance	01-FEB-2016	29-FEB-2016	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	901205198	Returned to Compliance	01-DEC-2015	31-DEC-2015	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	901205197	Returned to Compliance	01-DEC-2015	31-DEC-2015	No

1 - 50 of 252

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9008237	901205257	SOX	State Compliance achieved	08-SEP-2025	State	-
9008237	901205259	SOX	State Compliance achieved	08-SEP-2025	State	-
9008237	901205258	SOX	State Compliance achieved	08-SEP-2025	State	-
9008236	901205254	SOX	State Compliance achieved	14-JUN-2024	State	-
9008235	901205243	SOX	State Compliance achieved	05-APR-2024	State	-
9008235	901205241	SOX	State Compliance achieved	05-APR-2024	State	-
9008235	901205242	SOX	State Compliance achieved	05-APR-2024	State	-
9008234	901205240	SOX	State Compliance achieved	20-JUL-2023	State	-
9008233	901205236	SOX	State Compliance achieved	10-JUL-2022	State	-
9008233	901205235	SOX	State Compliance achieved	10-JUL-2022	State	-
9008233	901205237	SOX	State Compliance achieved	10-JUL-2022	State	-
9008232	901205238	SOX	State Compliance achieved	10-MAY-2022	State	-
9008230	901205233	SOX	State Compliance achieved	10-JAN-2022	State	-
9008230	901205232	SOX	State Compliance achieved	10-JAN-2022	State	-
9008230	901205234	SOX	State Compliance achieved	10-JAN-2022	State	-
9008228	901205229	SOX	State Compliance achieved	08-SEP-2020	State	-
9008228	901205231	SOX	State Compliance achieved	08-SEP-2020	State	-
9008228	901205230	SOX	State Compliance achieved	08-SEP-2020	State	-
9008227	901205227	SOX	State Compliance achieved	10-DEC-2018	State	-
9008227	901205226	SOX	State Compliance achieved	10-DEC-2018	State	-
9008227	901205228	SOX	State Compliance achieved	10-DEC-2018	State	-
9008226	901205225	SOX	State Compliance achieved	09-JUL-2018	State	-
9008226	901205224	SOX	State Compliance achieved	09-JUL-2018	State	-
9008226	901205223	SOX	State Compliance achieved	09-JUL-2018	State	-
9008225	901205222	SOX	State Compliance achieved	18-APR-2018	State	-
9008224	901205220	SOX	State Compliance achieved	04-APR-2018	State	-
9008224	901205219	SOX	State Compliance achieved	04-APR-2018	State	-
9008224	901205218	SOX	State Compliance achieved	04-APR-2018	State	-
9008224	901205217	SOX	State Compliance achieved	04-APR-2018	State	-
9008224	901205216	SOX	State Compliance achieved	04-APR-2018	State	-
9008224	901205221	SOX	State Compliance achieved	04-APR-2018	State	-
9008223	901205213	SOX	State Compliance achieved	06-DEC-2017	State	-
9008223	901205212	SOX	State Compliance achieved	06-DEC-2017	State	-
9008223	901205214	SOX	State Compliance achieved	06-DEC-2017	State	-
9008222	901205210	SOX	State Compliance achieved	09-FEB-2017	State	-
9008222	901205209	SOX	State Compliance achieved	09-FEB-2017	State	-
9008222	901205211	SOX	State Compliance achieved	09-FEB-2017	State	-
9008221	901205207	SOX	State Compliance achieved	10-OCT-2016	State	-
9008221	901205206	SOX	State Compliance achieved	10-OCT-2016	State	-
9008221	901205208	SOX	State Compliance achieved	10-OCT-2016	State	-
9008220	901205204	SOX	State Compliance achieved	05-AUG-2016	State	-
9008220	901205203	SOX	State Compliance achieved	05-AUG-2016	State	-
9008220	901205205	SOX	State Compliance achieved	05-AUG-2016	State	-
9008219	901205201	SOX	State Compliance achieved	07-APR-2016	State	-
9008219	901205200	SOX	State Compliance achieved	07-APR-2016	State	-
9008219	901205202	SOX	State Compliance achieved	07-APR-2016	State	-
9008218	901205198	SOX	State Compliance achieved	08-FEB-2016	State	-
9008218	901205197	SOX	State Compliance achieved	08-FEB-2016	State	-
9008218	901205199	SOX	State Compliance achieved	08-FEB-2016	State	-
9008217	901205195	SOX	State Compliance achieved	09-JUL-2015	State	-

1 - 50 of 248

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WILSON CREEK	11783	Yes	Intake	Surface water	Permanent	Active
ADAMS CREEK	11467	Yes	Intake	Surface water	Seasonal	Active
COMMON HEADER FOR WTP-A	19483	No	Common Headers	-	-	Active
COMMON HEADER FOR WTP-B	19484	No	Common Headers	-	-	Inactive
Distribution System	7444	No	Distribution System/Zone	-	-	Active
EP FOR WILSON & ADAMS CREEKS	12214	No	Sampling Station	-	-	Active
EP FOR ADAMS CREEK	12338	No	Sampling Station	-	-	Inactive
TP FOR WILSON & ADAMS CREEKS	479	No	Treatment Plant	-	-	Active
TP FOR ADAMS CREEK	480	No	Treatment Plant	-	-	Inactive

1 - 9 of 9

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP FOR WILSON & ADAMS CREEKS	479	Coagulation	Particulate removal
TP FOR WILSON & ADAMS CREEKS	479	Filtration, Rapid Sand	Particulate removal
TP FOR WILSON & ADAMS CREEKS	479	Flocculation	Particulate removal
TP FOR WILSON & ADAMS CREEKS	479	Sedimentation	Particulate removal
TP FOR WILSON & ADAMS CREEKS	479	Innovative	Disinfection

1 - 5 of 5

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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