Clearwater Hudson River Sloop - Clearwater conducts environmental education, advocacy programs and celebrations to protect the Hudson River, its tributaries and related bodies of water.
Ocean Arks International - A non-profit organization dedicated to using ecological engineering and design to solve water pollution problems.
Puget Sound On-Line - Puget Sound Water Quality Action Team's resource for protecting water quality and resources. Everything from research to recipes.
Sam's Environmental Engineering Page - Environmental Engineering information exchange, Water Pollution, stochastic method in groundwater modeling