awwa.org
An international nonprofit scientific and educational society dedicated to the improvement of drinking water quality and supply. Founded in 1881, AWWA is the largest organization of water supply professionals in the world. Its more than 56,000 members represent the full spectrum of the drinking water community: treatment plant operators and managers, scientists, environmentalists, manufacturers, academicians, regulators, and others who hold genuine interest in water supply and public health. Membership includes more than 4,200 utilities that supply water to roughly 185 million people in North America. AWWA is dedicated to safe drinking water.

waterwiser.org
WaterWiser, the preeminent resource for water efficiency and water conservation information.

wateronline.com
Resource for professionals in the water industry- Information on water treatment, sludge dewatering, pipe rehabilitation, flow meters, wastewater management, water clarification and more.

publicworks.com
Resource for professionals in the public works industry- Information on manufacturing, technology, equipment, supplies, telemetering, municipal construction, sanitation department and more.