2008

Mammoth Community Water District, California
City of St. Helena, California
Northampton Township, Pennslyvania

2007

Clear Creek County, Colorado
City of New Castle, Washington
City of Ephrata, Washington
City of Zephyrhills, Florida
Northstar CSD, California
Humboldt CSD, California
Town of River Bend, North Carolina
Goleta Sanitary District, California
City of Highland, Illinois
Wheaton Park District, Illinois
City of Columbia, Illinois
City of Baxter, Minnesota
Pleasant Hill Recreation & Park District, California
City of Aberdeen, Washington
City of Millbrae, California
City of High Springs, Florida
City of Dos Palos, California
City of Wood Dale, Illinois
City of La Habra, California
City of Hubbard, Oregon
City of East Grand Forks, Minnesota
Quincy-Columbia Basin Irrigation District, Washington
City of Albertville, Alabama
East Columbia Basin Irrigation District, Washington
City of Garden City, Idaho
City of Cape Canaveral, Florida
Union PUD, California
City of North Bend, Washington
City of Hutto, Texas
City of Los Banos, California
South San Joaquin Irrigation District, California
Campbell County Fiscal Court, Kentucky
City of Manitowoc, Wisconsin
City of Montclair, California
City of Maumelle, Arkansas
Prowers County, Colorado
Town of La Conner, Washington
City of Fort Payne, Alabama