Table 4. Removal of Giardia and Cryptosporidium in Slow Sand Filters

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Table 4. Removal of Giardia and Cryptosporidium in Slow Sand Filters Author Giardia Cryptosporidium Comments. Bellamy et al. (1985a) >98% - Schuler et al. (1988) 99.8 to 100% 100% Schuler et al. (1991) 3.9 to 7.11og Fogel et al. (1993) Average of 93% Logsdon et al. (1993) 93.7 to 99.9% USEPA (2001) 99.9 to 99.9% Timms et al. (1995) 99.9% Influent spike of 4,000oocyst/L,Filtration rate of 0.3 to 0.4 m/h Loganetal.(2001) >3 to 41og Influentspikeof65,000oocyst/L, Less removal with larger media Ephrem Guchi et al. Review on Slow Sand Filtration in Removing Microbial Contamination and Particles from Drinking Water. American Journal of Food and Nutrition, 2015, Vol. 3, No. 2, 47-55. doi:10.12691/ajfn-3-2-3 © The Author(s) 2015. Published by Science and Education Publishing.