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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00252
PWS Name:	DAYTON, CITY OF

Who Was Contacted and Phone:	Steve Sagmiller (503) 864-2221 ext. 306
Contact Date:	11/10/2009
Contacted By:	GENTRY, CARRIE (DWP)
Contact Method/Location:	Office

Assistance Type:	OTHER REGULATORY - REGULATORY ASSISTANCE
Reasons:	N/A N/A

Details:	SUMMARY: Quarterly monitoring for raw and finished coliform at slow sand filter DETAILS: Steve sent through the latest results for raw and finished coliforms at the slow sand filter. Removal rates havent changed remarkably. It is possible that the filter hasnt ripened, or that the filter wont achieve more removal than current rate. CT was calculated for the first and second user and appears to be acceptable at this time. ACTION NEEDED: Water system can switch to quarterly monitoring of raw and finished coliform at the slow sand filter. Next samples due to be taken 1st quarter, 2010.