10^5 - 10^8 CFU/g
||Letarov A, Kulikov E. The bacteriophages in human- and animal body-associated microbial communities. J Appl Microbiol. 2009 Jul107(1):1-13. doi: 10.1111/j.1365-2672.2009.04143.x. p.6 left column top paragraphPubMed ID19239553
||Havelaar, A.H., Furuse, K. and Hogeboom, W.M. (1986) Bacteriophages and indicator bacteria in human and animal faeces. J Appl Bacteriol 60, 255–262.PubMed ID3710943
||Primary source abstract: "In an attempt to explain the presence of F-specific (RNA) bacteriophages in waste-water, faecal material from humans and a variety of animals was examined. The phages were detected in appreciable numbers only in faeces from pigs, broiler chickens, sheep and calves but not from dogs, cows, horses and humans."
||P.6 left column top paragraph: "Coliform bacteria (>80% of them generally are E. coli) are normally present at 10^5–10^8 CFU/g in human and
animal faeces (primary source)."