OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details
PWS ID: OR41 00457
PWS Name: LAKE OSWEGO MUNICIPAL WATER
 
Who Was Contacted and Phone: Kari Duncan (503) 635-0394
Contact Date: 03/01/2009
Contacted By: FARRELLY, PETER (DWP)
Contact Method/Location: Office
 
Assistance Type: MONITORING
Reasons: SWTR
Operations
 
Details: SUMMARY: Occasional IFE readings to replace CFE compliance readings DETAILS: Twice per year Lake Oswego will report the highest IFE reading instead of their CFE reading for 1-2 days on their SWTR reports.
They will make a note of it on the report when it occurs.

Lake Oswego has two lime feed systems. When they bring down their primary lime feeder, they employ the backup feeding system. The backup feeder dramatically affects the CFE readings, incorrectly indicating high turbidity break-through.
This IFE replacement reading should only last about 4 days in a given year. ACTION NEEDED: none.


More information for this water system: SDWIS ID 4106
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