OHA Drinking Water Services
OR41 00379 JOINT WATER COMMISSION Classification: COMMUNITY - Wholesale
Contact: CHRIS WILSON Phone: 503-615-6671
150 E MAIN ST County: WASHINGTON
HILLSBORO, OR 97123 Activity Status: ACTIVE -- History
Population: 400,000 Number of Connections: 4
Operating Period: January 1 to December 31 Regulating Agency: REGION 1
Certified Operator(s) Owner Type: LOCAL GOVERNMENT
Required: Y Licensed By: N/A
Distribution class: None Approved Drinking Water Protection Plan: No
Treatment class: 4 Source Water Assessment: Yes
Filtration Endorsement Required: NoLast Survey Date:  May 18, 2021
Sources
Facility ID Facility Name Activity Status Availability Source Type
EP-A EP FOR TUALATIN RIVER A SW
SRC-AA TUALATIN RIVER A Permanent SW
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Treatment
Facility ID Facility Name Filter Type Giardia Removal
Credit
Treatment Process Treatment Objective
WTP-A TP FOR TUALATIN RIVER Conventional Filtration 2.5-logFILTRATION, RAPID SAND PARTICULATE REMOVAL
GASEOUS CHLORINATION, POST DISINFECTION
GASEOUS CHLORINATION, PRE DISINFECTION
PH ADJ-CAUSTIC SODA CORROSION CONTROL
COAGULATION PARTICULATE REMOVAL
FLOCCULATION PARTICULATE REMOVAL
RAPID MIX PARTICULATE REMOVAL
SEDIMENTATION PARTICULATE REMOVAL

Consumer Confidence Reports (Last 5 Years)
Only (non-wholesale) community water systems require consumer confidence reports.

Cross Connection/Backflow Prevention Information (Last 3 Records)
Enabling Authority Received Annual Summary
Report Received
Fee Invoice Paid
Yes 2007 2008
  2006 2007
  2005 2006


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: 3889