Contact Report Details | Data Online | Oregon Drinking Water Services

More information for this water system: SDWIS ID 4296
System Info :: Report for Lenders :: Alerts :: Violations :: Compliance & Enforcement :: Contacts & Advisories :: Site Visits :: Public Notice
Coliform Summary :: Coliform Results :: Coliform Schedules :: LT2 :: GW/GWUDI Source Details :: Plan Review :: Annual Fee
Chemical Summary :: Chemical Results :: Chemical Schedules :: Chemical Schedule Summary :: Arsenic RAA :: Cyanotoxins :: PFAS
Lead & Copper :: DBP Sample Sites :: FANLs :: MRDL :: GWR 4-Log :: Turbidity :: SWTR :: LRAA

Corrosion Control has moved to the Lead & Copper page.

Information for all water systems:
Water System Inventory :: Water System Surveys :: Outstanding Performers :: Treatment Plant Inspections :: Treatment :: Plan Reviews
Alerts :: Violations :: Compliance & Enforcement :: Deficiencies :: System Scores :: Exceedances :: Public Notices :: Service Lines
Water Advisories :: Contact Reports :: Cyanotoxins :: PFAS :: Post-wildfire VOCs :: Fluoride :: Certification List

OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00452
PWS Name:	LAFAYETTE, CITY OF

Who Was Contacted:	Konrad Dimmitt
Contact Phone:	503-437-0401
Contact Date:	05/01/2019
Contacted By:	CIVIL WEST ENGINEERS, INC (DWP)
Contact Method/Location:	Field

Assistance Type:	CIRCUIT RIDER ASSISTANCE

Details:	The City is experiencing high levels of DBPs in the distribution system and would like some assistance tracking down what the issue could be. Dan made a field visit to assess the system and to speak to the operator. It was decided that a round of special tests in several locations could help confirm the likely source of the DBPs. Konrad provided test results from Edge Analytical confirming that the source of the elevated DBPs was the water coming from the City of Dayton. It is recommended that the City of Lafayette work with the City of Dayton to alleviate the DBP issue. Immediately after the reservoir in Dayton, DBPs also tested at an elevated level, so this issue is not unique to the City of Lafayette. Our recommendation is that the City of Dayton should look into reducing their DBPs by possibly decreasing contact time in their reservoir, lowering their chlorine injection rate/concentration, or both. There may also be other options available if decreasing contact time and/or chlorination is not viable due to disinfection requirements. The circuit rider would be happy to assist the City of Dayton if need be.