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: 11/30/2007
Contacted By: FARRELLY, PETER (DWP)
Contact Method/Location: Office
 
Assistance Type: WATER QUALITY ALERT RESPONSE
Reasons: Lead or Copper
N/A
 
Details: SUMMARY: LCR Excursions - Malfunctioning PLC - Currently Troubleshooting DETAILS: Kari explained that the PLC responded to false reservoir overflow alarms caused the lime feeding system to malfunction. WS is purchasing a new level sensor for the tank and have vendors working on the PLC system.

When the lime feeding system stopped feeding, Kari didnt find it until later that day. By that point it took a while to re-saturate the water and get the system back online.
She brought the old lime slurry system online, but it generates false turbidity problems for the plant. So they are looking to fixing the primary system, asap. ACTION NEEDED: None. Troubleshooting effectively for now with redundant systems.

 
Associated Alerts: CHEM1226 - 03/21/2005 - LEAD SUMMARY

CHEM1226 - 03/21/2005 - LEAD SUMMARY


More information for this water system: SDWIS ID 4106
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