Four compost piles, employing the aerated static pile system were studied with respect to pathogen inactivation. This was evaluated by means of the commonly used indicator organisms: E. coli, faecal streptococci and salmonellae. Samples from three separate sites within the piles were used, which had experienced different temperature/time profiles during composting. All three sites were located in the section of the pile just below the cover layer. E. coli, and faecal streptococci were reduced from approximately 10 7 org/g.ww to less than 102 org/g.ww.
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Pereira-Neto et al. (1986) studied this question.
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