OHA Drinking Water Services
OR41 01542 LAKE OSWEGO - TIGARD WATER SUPPLY Classification: COMMUNITY - Wholesale
Contact: BRET BIENERTH Phone: 503-635-0393
4260 KENTHORPE WAY County: CLACKAMAS
WEST LINN, OR 97068 Activity Status: ACTIVE Jan 01, 2020 -- History
Population: 105,000 Number of Connections: 2
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:  Jul 19, 2022 - Outstanding Performer!
Sources
Facility ID Facility Name Activity Status Availability Source Type
EP-A EP FOR CLACKAMAS RIVER A SW
SRC-AA CLACKAMAS 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 CLACKAMAS RIVER Conventional Filtration 2.5-logFILTRATION, RAPID SAND PARTICULATE REMOVAL
HYPOCHLORINATION, POST DISINFECTION
PH ADJ-CAUSTIC SODA CORROSION CONTROL
OZONATION, PRE DISINFECTION
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)
No annual summary reports or annual fees found.


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: 5510