Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OR4100225
PWS Name	CORVALLIS, CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	61468
County Served	Benton

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 of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493273	Returned to Compliance	01-OCT-2020	31-OCT-2020	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	900493275	Returned to Compliance	01-OCT-2020	31-OCT-2020	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	900493276	Returned to Compliance	01-OCT-2020	31-OCT-2020	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493272	Returned to Compliance	01-OCT-2020	31-OCT-2020	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493274	Returned to Compliance	01-OCT-2020	31-OCT-2020	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493271	Returned to Compliance	01-OCT-2020	31-OCT-2020	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	900493277	Returned to Compliance	01-JUL-2020	-	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	900493278	Returned to Compliance	01-JUL-2020	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	900493270	Returned to Compliance	01-JUN-2020	30-JUN-2020	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493267	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493265	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	900493269	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	900493268	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493266	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493264	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	900493256	Returned to Compliance	01-JUL-2019	30-SEP-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	900493257	Returned to Compliance	01-JUL-2019	30-SEP-2019	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	900493251	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493249	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493250	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	900493252	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493247	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493248	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493230	Returned to Compliance	01-MAR-2012	31-MAR-2012	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	900493231	Returned to Compliance	01-MAR-2012	31-MAR-2012	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	900493232	Returned to Compliance	01-MAR-2012	31-MAR-2012	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	900493228	Returned to Compliance	01-DEC-2011	31-DEC-2011	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	6771780	Known	24-JUN-1979	23-JUN-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	6447380	Known	01-JUN-1976	31-MAY-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	6447580	Known	01-JUN-1976	31-MAY-1980	No

1 - 30 of 30

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9471817	900493277	SOX	State Compliance achieved	09-DEC-2020	State	-
9471818	900493276	SOX	State Compliance achieved	09-DEC-2020	State	-
9471818	900493275	SOX	State Compliance achieved	09-DEC-2020	State	-
9471818	900493274	SOX	State Compliance achieved	09-DEC-2020	State	-
9471817	900493278	SOX	State Compliance achieved	09-DEC-2020	State	-
9471818	900493272	SOX	State Compliance achieved	09-DEC-2020	State	-
9471818	900493271	SOX	State Compliance achieved	09-DEC-2020	State	-
9471818	900493273	SOX	State Compliance achieved	09-DEC-2020	State	-
9471816	900493270	SOX	State Compliance achieved	30-JUL-2020	State	-
9471815	900493265	SOX	State Compliance achieved	06-FEB-2020	State	-
9471815	900493269	SOX	State Compliance achieved	06-FEB-2020	State	-
9471815	900493268	SOX	State Compliance achieved	06-FEB-2020	State	-
9471815	900493267	SOX	State Compliance achieved	06-FEB-2020	State	-
9471815	900493266	SOX	State Compliance achieved	06-FEB-2020	State	-
9471815	900493264	SOX	State Compliance achieved	06-FEB-2020	State	-
9471814	900493256	SOX	State Compliance achieved	11-DEC-2019	State	-
9471814	900493257	SOX	State Compliance achieved	11-DEC-2019	State	-
9471813	900493248	SOX	State Compliance achieved	05-OCT-2017	State	-
9471813	900493247	SOX	State Compliance achieved	05-OCT-2017	State	-
9471813	900493251	SOX	State Compliance achieved	05-OCT-2017	State	-
9471813	900493252	SOX	State Compliance achieved	05-OCT-2017	State	-
9471813	900493250	SOX	State Compliance achieved	05-OCT-2017	State	-
9471813	900493249	SOX	State Compliance achieved	05-OCT-2017	State	-
9471811	900493231	SOX	State Compliance achieved	08-MAY-2012	State	-
9471810	900493230	SOX	State Compliance achieved	08-MAY-2012	State	-
9471812	900493232	SOX	State Compliance achieved	08-MAY-2012	State	-
9471807	900493228	SOX	State Compliance achieved	09-FEB-2012	State	-

1 - 27 of 27

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
ROCK CREEK (EMERGENCY)	18760	Yes	Intake	Surface water	Emergency	Inactive
GRIFFITH CREEK	18758	Yes	Intake	Surface water	Permanent	Active
SOUTH FORK ROCK CREEK	18757	Yes	Intake	Surface water	Permanent	Active
WILLAMETTE RIVER	11794	Yes	Intake	Surface water	Permanent	Active
NORTH FORK ROCK CREEK RES	11792	Yes	Intake	Surface water	Permanent	Active
COMMON HEADER FOR WTP-A	19112	No	Common Headers	-	-	Active
COMMON HEADER FOR WTP-B	19113	No	Common Headers	-	-	Active
Distribution System	6893	No	Distribution System/Zone	-	-	Active
EP FOR TAYLOR WTP	12239	No	Sampling Station	-	-	Active
EP FOR ROCK CREEK WTP	12241	No	Sampling Station	-	-	Active
TP FOR TAYLOR WTP	97	No	Treatment Plant	-	-	Active
TP FOR ROCK CREEK WTP	98	No	Treatment Plant	-	-	Active

1 - 12 of 12

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP FOR TAYLOR WTP	97	Filtration, Rapid Sand	Particulate removal
TP FOR TAYLOR WTP	97	Rapid Mix	Particulate removal
TP FOR TAYLOR WTP	97	Coagulation	Particulate removal
TP FOR TAYLOR WTP	97	Flocculation	Particulate removal
TP FOR TAYLOR WTP	97	Sedimentation	Particulate removal
TP FOR TAYLOR WTP	97	Fluoridation	Other
TP FOR TAYLOR WTP	97	pH Adjustment, Pre	Particulate removal
TP FOR TAYLOR WTP	97	Innovative	Corrosion control
TP FOR TAYLOR WTP	97	Permanganate	Taste / odor control
TP FOR TAYLOR WTP	97	Hypochlorination, Pre	Disinfection
TP FOR TAYLOR WTP	97	Hypochlorination, Post	Disinfection
TP FOR ROCK CREEK WTP	98	Filtration, Rapid Sand	Particulate removal
TP FOR ROCK CREEK WTP	98	Rapid Mix	Particulate removal
TP FOR ROCK CREEK WTP	98	Coagulation	Particulate removal
TP FOR ROCK CREEK WTP	98	Flocculation	Particulate removal
TP FOR ROCK CREEK WTP	98	Sedimentation	Particulate removal
TP FOR ROCK CREEK WTP	98	Fluoridation	Other
TP FOR ROCK CREEK WTP	98	pH Adjustment, Pre	Particulate removal
TP FOR ROCK CREEK WTP	98	Innovative	Corrosion control
TP FOR ROCK CREEK WTP	98	Permanganate	Taste / odor control
TP FOR ROCK CREEK WTP	98	Hypochlorination, Pre	Disinfection
TP FOR ROCK CREEK WTP	98	Hypochlorination, Post	Disinfection

1 - 22 of 22

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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