OHA Drinking Water Services
Contact Report Details |
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| 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 |
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| 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. | ||