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)|
|Contacted By:||MACPHERSON, JAMES (DWP)|
|Assistance Type:||WATER QUALITY ALERT RESPONSE|
|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) , TOTAL TRIHALOMETHANES (TTHM)