A compost pile must reach a temperature of 130 degrees for 3 days in order to legally be compost. It must be applied to the soil following the regulations regarding its most limiting sub components. in UK's case- manure from the university's animal research farm.
compost_temperature_range.jpg
compost_temperature_range.jpg

Microbial life within a compost pile actually dose not completely self sterilize, however the high temperatures created dose destroy mesophyllic bacteria which operates within normal outdoor temperature. It is this range of bacteria which poses a pathogenic threat,