Judy Vesel, Principal Investigator and Project Director

Linda Bean-Pardee, Project Designer
Bryce Flynn, Senior Web Designer and Illustrator
Robby Griffin, Web Support Specialist
Topher Hagemeier, Curriculum Developer
Arthur Johnson, Project Evaluator
David Libby, Director of Information Systems
Vanessa Layne, Web Toolsmith
Lisa M. Miller, Senior Web Developer
Matthew O'Toole, Web Consultant
Tara Robillard, Materials Developer and Evaluator
Laura Uhl, Editor

Rebecca Ames, Judy Johnson, Susanne Meade, Denise Nelson, Louise Rak, Green Meadow School, Maynard, Mass.; Carol Brown, Joy Watson, Imes Magnet School, Glendale, Ariz.; Tawny Buckley, Robin Drury, Peg Ecclesine, Lori Strand, Leah Zuckerman, Chelmsford Public Charter School, Chelmsford, Mass.; Sally Burke, Loretta Cunha, Joseph Mulready School, Hudson, Mass.; Robert Coulter, Forsyth School, St. Louis, Mo.; Shawn Duffy, Flint Hill Elementary School, Vienna, Va.; Carol Fitzgerald, Signe Ulwick Thompson School, Arlington, Mass.; Jean Foley, Kim Murphy, West Somerville Neighborhood School, Somerville, Mass.; Tara Frazier, Woodley Hills Elementary School, Alexandria, Va.; Carol Gilkinson, Jeanine Robertson, Charter Oak Unified School District, Covina, Calif.; Desiree Gosien, LaQuita Outlaw, Intermediate School 8, Jamaica, N.Y.; Lynn Grainger, Amy Sanzo, Arlington Central School District, Poughquag, N.Y.; Bill Hamilton, Armstrong Elementary, Reston, Va.; Jan Holland, Lavonia Elementary School, Lavonia, Ga.; Joan Keenan, Migali Rivera, Norma Smith, Charles H. Emanuel School, Kingshill, St. Croix, V.I.; Doris Morin, Carol Whitham, Auburn Village School, Auburn, N.H.; Miguelina Ortiz, Noemi Rivera, Shelley Walker, P.S. 304, Brooklyn, N.Y.; Dawn Pare, Lafayette Regional School, Franconia, N.H.;Kristine Peterson, Karen Terry, Horizon School, Glendale, Ariz.; Ellen Pysz, Sunapee Elementary School, Sunapee, N.H.; Donna Rosenberg, Frances Stuart, Patrick J. Kennedy Elementary School, E. Boston, Mass.; Caroline Thom, Jeanne Wall, Bishop School, Arlington, Mass.; Kim Thomas, Teresa Torason, Smith Magnet School, Glendale, Ariz.; Priscilla Waynant, Montgomery County Schools, Rockville, Md.

Elena Dworkin Wright, Managing Editor

Concetta Brown, Production Designer
Claudette Dawes, Editor
Sarah McAbee, Production Designer
Alyssa Mito Pusey, Editor
Martha MacLeod Sikkema, Production Designer

This unit was developed by TERC and funded in part by the National Science Foundation, Grant ESI-9553592, and the National Geographic Society. All opinions, findings, conclusions, and recommendations expressed herein are those of the authors and do not necessarily reflect the views of the funders. A prior version of the unit was developed by TERC in collaboration with the National Geographic Society and published as the What's in Our Water? part of the National Geographic Kids Network series.