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Karanis, P., Schoenen, D. and Seitz, H. 1996. Giardia and Cryptosporidium in backwash water from rapid sand filters used for drinking water production. Zbl. Bakt. (284:107- 114) [W-99-10-I-B-119] (The eRulemaking Program)

Public Technologies 23 Feb 2026
both were detected in 92% of the backwash water samples ... The treated water is pumped to a lake used as drinking water reser voix The backwash waters resulting from backwashing the sand filters are pumped into special basins for sedimentation.
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Coping with Filter Backwash Recycle in Water Treatment Tony Myers, P.E. Water Technology Leader CH2M HILL Milwaukee, WI [W-99-10-II-B-85] (The eRulemaking Program)

Public Technologies 23 Feb 2026
'Coping with Filter Backwash Recycle in Water Treatment ... Handling filter backwash water is an issue many water utilities are facing with the new Filter Backwash Rule ... Other utilities are looking at discontinuing backwash recycle and disposing of the.
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