Professional association which sponsors annual conference, conducts training, awards credentials for solid waste management professionals, and maintains the Solid Waste Information Clearinghouse.

Professional organization that provides training, information, and networking opportunities to 12,000 environmental professionals in 65 countries. Focus is on air quality, waste management and environmental management.

Mission is to promote and develop professional solid waste management world-wide. Website has information on the organization, waste-related conferences, and links.

Research, public education, composting and compost standards, expansion of compost markets and the enlistment of public support.

Founded in 1991 as a national professional organization to advance and promote the onsite wastewater industry.

Organization supporting the environmental agencies of the states and trust territories.

Independent, nonpartisan organization of state water program managers.

Professional association serving state drinking water programs.

Represents companies that manage solid, hazardous, and medical wastes; manufacture and distribute waste equipment; and offer related pollution-prevention services.

Association for companies which design, build, distribute, and service equipment for the waste management industry.