Des Moines Water Works, IA
Kennebunk, Kennebunkport and Wells Water District, ME
Orange County Water District, CA
Florida Keys Aqueduct Authority, FL
Arvin Community Service District
Camrosa Water District, CA
Centerville Osterville Marstons Mills Fire District/Water Department, MA
Chino Basin Desalter Authority, CA
Cirtus Heights Water District
Dedham-Westwood Water District, MA
Del Paso Manor Water District
Del Rey Community Service District
Delhi County Water District
East Chelmsford Water District, MA
East Orange Water District, CA
Elsinore Valley Municipal Water District, CA
Fair Oaks Water District
Florin Resource Conservation District
Greenfield County Water District
Hilmar County Water District
Invanhoe Public Utility District
Irvine Ranch Water District, CA
Jurupa Community Services District, CA
Kennebec Water District, ME
La Habra Heights County Water District, CA
Lake Hemet Municipal Water District, CA
Montara Water and Sanitary District, CA
North Park Public Water District, IL
Olivehurst Public Utility District, CA
Orchard Dale Water District, CA
Pico Water District, CA
Pleasant Valley Public Water District, IL
Quincy Community Services District
Rio Linda Elverta Water District
Riverview Water District
Rubidoux Community Services District, CA
Sacramento Groundwater Authority
Sacramento Suburban Water District
Sammamish Plateau Water and Sewer District, WA
Sanford Water District, ME
San Juan Water District
Santa Margarita Water District, CA
Serrano Water District, CA
South Montebello Irrigation District, CA
Southeast Morris County Municipal Utilities Authority, NJ
Sudbury Water District, MA
Sunnyvale Redevelopment Agency
Swansea Water District, MA
West Des Moines Water Works, IA
Winton Water and Sanitary District
Dracut Water Supply District
Frankfort Plant Board, KY
Harrisville Fire District
Northern Kentucky Water District
Water Replenishment District of Southern California