Welcome to the Cleanwater Central™ database, a joint data harmonization project sponsored by the National Association of Clean Water Agencies (NACWA) and the Water Environment Research Foundation (WERF).     Cleanwater Central™ has been designed to provide utility managers and researchers detailed technical and research information on public water and sewerage agencies and treatment facilities (primarily in the North America). The data contained in the database originates from member/subscriber surveys performed by NACWA and WERF, WERF research studies, or directly from member/subscriber agencies. The database was launched in July 2003. » Enter and learn more about Cleanwater Central™ » Enter private subscriber's area Copyright ©2000-2009, Cleanwater Central™ A joint venture of NACWA and WERF, All Rights Reserved.