OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00002
Who Was Contacted and Phone: Dick Davis, DRC (541) 372-2611
Contact Date: 11/16/2009
Contacted By: BURNETT, GARY (DWP)
Contact Method/Location: Office
Reasons: Coliform
Details: SUMMARY: Reviewed coliform sampling requirements for November due to October MCL violation. DETAILS: City to take 5 Routine coliform samples in November since a TCR MCL violation occurred in October. Note-- 2 of the positive samples showed a chlorine residual of 0.83 mg/l. Dick says that was the reading on that day. Therefore, a biofilm problem may be contributing to the coliform occurrences. The system has always had a very high chlorine demand. Dick will also add 5 gallons of 12.5 % sodium hypochlorite to the 200,000 gallon reservoir to try an achieve an adequate residual in the distribution system. ACTION NEEDED: 5 Routine coliform samples required for November. Public notification for Total Coliform MCL violation required by November 30.

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DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3682