1. ASCE and AWWA technology transfer handbook: management of water treatment plant residuals. American Society of Civil Engineers and American Water Works Association, 1996.
2. Waste stream recycling;Cornwell;J AWWA,1994
3. Regulating filter backwash water;Pontius;J AWWA,1997
4. Effects of spent filter backwash recycle on cryptosporidium removal;Cornwell;J AWWA,2001
5. USEPA national primary drinking water, filter backwash water recycle rule; final rule: Federal Register, vol. 66, 2001. p. 11.