Composting Human Waste Methods and Worms Give a Rapid 6 week, Safe Levels of pathogens.

Every day in Denver Colorado, according my calculation based on an average flush of 2 Gallons per flush (average of older toilets and new low volume flush), some 14,000,000 gallons of drinking water is flushed down the toilet.





Bioresource Technology
Volume 101, Issue 10, May 2010, Pages 3548–3553

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Pathogen reduction in septic tank sludge through vermicomposting using Eisenia fetida

L.G. Rodríguez-Canchéa, , , L. Cardoso Viguerosb, T. Maldonado-Montielc, M. Martínez-Sanmigueld
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http://dx.doi.org/10.1016/j.biortech.2009.12.001
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Abstract
This study evaluated the potential of earthworms (Eisenia fetida) to remove pathogens from the sludge from septic tanks. Three earthworm population densities, equivalent to 1, 2, and 2.5 kg m-2, were tested for pathogen removal from sludge. The experimental phase lasted 60 days, starting from the initial earthworm inoculation. After 60 days, it was found that earthworms reduced concentrations of fecal coliforms, Salmonella spp., and helminth ova to permissible levels (<1000 MPN/g, <3 MPN/g, and <1 viable ova/g on a dry weight basis, respectively) in accordance with Official Mexican Standard of environmental protection (NOM-004-SEMARNAT-2002) (SEMARNAT, 2002). Thus, sludge treatment with earthworms generated Class A biosolids, useful for forest, agricultural, and soil improvement.