OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00823
PWS Name: SILVERTON, CITY OF
 
Who Was Contacted and Phone: Steve Starner (503) 873-5473
Contact Date: 06/28/2010
Contacted By: HENRY, ROBERT (DWP)
Contact Method/Location: Field
 
Assistance Type: CIRCUIT RIDER ASSISTANCE
Reasons: N/A
N/A
 
Details: SUMMARY: CT Tracer Study DETAILS: The City owns and operates a surface water system that provides water to 9,540 people through 3,500 connections. Water from Abiqua and Silver Creeks is treated by a conventional water treatment plant prior to disinfection with Sodium Hypochlorite. HBH was contacted by Steve Starner to provide assistance with a contact tracer study to determine the amount of contact time in the reservoirs before the first user. The tracer testing is complicated by the current lack of a delivery meter following the contact reservoir. I composed methodology for the study which included a determination of proper test flows and submitted methodology to DWP for approval. ACTION NEEDED: Perform tracer testing.