His municipal composting and recycling initiatives dramatically decreased landfill waste. Common disposal practices of sewage sludge are incineration, composting, and landfill. An alternate method of composting is vermicomposting. The next is recycling which includes composting. It deals with toilets (including composting toilets) and toilet waste. It also performs educational outreach on topics such as composting and waste reduction. Such conditions include anaerobic degradation and composting. Water can be eliminated in toilets through the uses of a composting toilet. Leachate removal controls moisture levels, which is necessary to ensure rapid, aerobic composting. Blackwater generation can be avoided by making use of composting toilets and vermifilter toilets. Slow composting toilets employ a passive approach. Urine removal is only required for those types of composting toilets using urine diversion. Some composting toilets do not require water or electricity; others may. Worms can be introduced to accelerate composting. Archaeological finds show a multitude of composting pits and irrigation systems.