Composting Toilet - Natural wastewater disposal system.
Site tells how it works and how to buy one for commercial or household use.
Composting Toilet Systems, Inc. - An environmentally friendly array of waterless toilets that can be used in all types of conditions and areas. Clients include parks and municipalities. Ecological Dry Toilets - Dry toilets, rainwater harvesting, wetlands for greywater treatment and organic gardening in Mexico. Requires no chemicals, additives, water or mains drainage. Envirolet Composting Toilets - Economical and environmental solution to septic for cottage, cabin, home or business.