OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details
PWS ID: OR41 00854
PWS Name: SWISSHOME VILLAGE
 
Who Was Contacted: Matt Grassauer
Contact Phone: 541-972-1859 (Email address hidden)
Contact Date: 01/08/2019
Contacted By: MACPHERSON, JAMES (DWP)
Contact Method/Location: Phone
 
Assistance Type: WATER QUALITY ALERT RESPONSE
Reasons: Disinfection Byproducts
 
Details: DBPs over MCL. Presumed contact time is 2415 minutes (check file for tracer study; if none, conduct tracer study). Discussed ways to reduce DBP concentrations, including: lower chlorine dose to 0.4 mg/L; lower volume in reservoir/clear well to achieve faster turnover; periodically flush reservoir; get slow sand filter running. Change from color wheel to digital chlorine meter. Tracer study can be conducted by circuit rider.

Sample for DBPs this quarter and next, minimum. If MCL continues to be exceeded, will need to continue quarterly DBP monitoring.
 
Associated Alerts: CHEM8204 - 01/08/2019 - TOTAL HALOACETIC ACIDS (HAA5) , TTHM


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