» Alliance for Sustainable Communities, Lehigh Valley    Group of individuals, organizations, and businesses working towards sustainable development in the area. Overview of its working groups, community activities, and accomplishments.    http://www.sustainlv.org/

» Lehigh Valley Amateur Astronomical Society    Public-oriented nonprofit educational organization dedicated to serving the interests of the community in astronomy and related fields. Includes information on the observatory.    http://www.lvaas.net/

» Lehigh Valley Audubon Society    Regular birding and occasional other natural history field trips are held throughout the year. Meetings are held on the second Tuesday of each month.    http://www.lehigh.edu/~bcm0/lvas.html

» Lehigh Valley Computer Group    Education-oriented association presents its event calendar, archive of newsletters, information about the special interest groups, and free downloads.    http://www.lvcg.org/

» Lehigh Valley Water Suppliers, Inc.    Group of seven public water suppliers offer information about water and its usage for kids and adults, links to the individual suppliers as well as external resources.    http://www.lvwater.org/

» Sierra Club, Lehigh Valley Group    Group of local citizens interested in protecting and preserving the environment of the Lehigh Valley presents its committees and activities, a summary of local issues, and a photo gallery.    http://pennsylvania.sierraclub.org/lv/

» The Lehigh Valley Herpetological Society    Organization of amateur and professional herpetologists. Meets at the Pool wildlife sanctuary.    http://members.tripod.com/~lvhs/