OHA Drinking Water Services
OR41 00225 CORVALLIS, CITY OF Classification: COMMUNITY
Contact: CHAD MARSHALL OR TOM HUBBARD Phone: 541-754-1758
PO BOX 1083 County: BENTON
CORVALLIS, OR 97339 Activity Status: ACTIVE -- History
Population: 56,000 Number of Connections: 16,803
Operating Period: January 1 to December 31 Regulating Agency: REGION 2
Certified Operator(s) Owner Type: LOCAL GOVERNMENT
Required: Y Licensed By: N/A
Distribution class: 4 Approved Drinking Water Protection Plan: No
Treatment class: 4 Source Water Assessment: Yes
Filtration Endorsement Required: NoLast Survey Date:  Sep 16, 2021
Sources
Facility ID Facility Name Activity Status Availability Source Type
EP-A EP FOR TAYLOR WTP A SW
SRC-AA WILLAMETTE RIVER A Permanent SW
EP-B EP FOR ROCK CREEK WTP A SW
SRC-BA NORTH FORK ROCK CREEK RES A Permanent SW
SRC-BB SOUTH FORK ROCK CREEK A Permanent SW
SRC-BC GRIFFITH CREEK A Permanent SW
SRC-BD ROCK CREEK (EMERGENCY) I Emergency SW
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Treatment
Facility ID Facility Name Filter Type Giardia Removal
Credit
Treatment Process Treatment Objective
WTP-A TP FOR TAYLOR WTP Conventional Filtration 2.5-logFILTRATION, RAPID SAND PARTICULATE REMOVAL
HYPOCHLORINATION, POST DISINFECTION
HYPOCHLORINATION, PRE DISINFECTION
PH/ALKA ADJ-SODA ASH CORROSION CONTROL
FLUORIDATION OTHER
COAGULATION PARTICULATE REMOVAL
FLOCCULATION PARTICULATE REMOVAL
PH ADJUSTMENT, PRE PARTICULATE REMOVAL
RAPID MIX PARTICULATE REMOVAL
SEDIMENTATION PARTICULATE REMOVAL
PERMANGANATE TASTE / ODOR CONTROL
WTP-B TP FOR ROCK CREEK WTP Conventional Filtration 2.5-logFILTRATION, RAPID SAND PARTICULATE REMOVAL
HYPOCHLORINATION, POST DISINFECTION
HYPOCHLORINATION, PRE DISINFECTION
PH/ALKA ADJ-SODA ASH CORROSION CONTROL
FLUORIDATION OTHER
COAGULATION PARTICULATE REMOVAL
FLOCCULATION PARTICULATE REMOVAL
PH ADJUSTMENT, PRE PARTICULATE REMOVAL
RAPID MIX PARTICULATE REMOVAL
SEDIMENTATION PARTICULATE REMOVAL
PERMANGANATE TASTE / ODOR CONTROL

Consumer Confidence Reports (Last 5 Years)
For Year       Date Received Date Certified
2021       Mar 11, 2022 Mar 11, 2022
2020       Jun 09, 2021 Jun 09, 2021
2019       May 27, 2020 May 27, 2020
2018       May 30, 2019 May 30, 2019
2017       May 29, 2018 May 29, 2018

Cross Connection/Backflow Prevention Information (Last 3 Records)
Enabling Authority Received Annual Summary
Report Received
Fee Invoice Paid
Yes (PDF) 2021 (PDF) 2022
  2020 (PDF) 2021
  2019 (PDF) 2020


For further information on this public water system, click on the area of interest below:
System Info :: Report for Lenders :: Alerts :: Violations :: Compliance & Enforcement :: Contacts & Advisories :: Site Visits :: Public Notice
Coliform Summary :: Coliform Results :: Sampling Schedule for Coliform :: Groundwater/GWUDI Source Details :: Plan Review :: Annual Fee
Chemical Group Summary :: Latest Chemical Results :: Entry Point Detects :: Single Analyte Results 
Chemical Schedule Summary :: Chemical Schedule Details
Lead & Copper :: Corrosion Control (LCR) :: Nitrate :: Arsenic :: Radionuclides :: GWR 4-Log :: LT2 :: Cyanotoxins :: PFAS
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3884