OHA Drinking Water Services
Contact Report Details |
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PWS ID: | OR41 00939 | ||
PWS Name: | WESTFIR, CITY OF | ||
Who Was Contacted and Phone: | Myron Smith (541) 782-3733 | ||
Contact Date: | 02/03/2009 | ||
Contacted By: | HENRY, ROBERT (DWP) | ||
Contact Method/Location: | Field | ||
Assistance Type: | CIRCUIT RIDER ASSISTANCE | ||
Reasons: | N/A N/A |
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Details: | SUMMARY: Filter Media Evaluation DETAILS: The City owns and operates a Surface Water system. The city supplies treated water to 320 residents through 120 connections. HBH was contacted by Mr Smith to provide assistance with performance issues in one of the City’s slow sand filter basins. The City has had repeated difficulty with one of the two filter basins ever since the media was replaced. Finished water turbidity levels are below the MCL, however-- the second filter takes considerably longer to ripen. In addition, the ultimate turbidity levels in the second filter are significantly higher than in the first filter. I evaluated results of lab analysis, comparing results with typical media gradations for slow sand filters. I corresponded with Myron Smith regarding slow sand filter media sources. ACTION NEEDED: Continue investigation of media quality. |