Alameda County Water District

Artesian Water Company

Atlanta Watershed Management, GA

Aurora Water

Beaufort Jasper Water and Sewer Authority

Burbank Water & Power

City of Bandera

City of Bisbee

City of Buckeye

City of Calgary

City of Carrollton

City of Castroville

City of Chesapeake

City of Concord NC

City of Daytona Beach Utilities

City of Elko

City of Eloy

City of Fairfield

City of Fayetteville Water/Sewer

City of Flagstaff Water Services

City of Garland Water Utilities

City of Georgetown

City of Griffin

City of Henderson, NV Department of Utility Services

City of Houston

City of Huntington Beach

City of Medicine Hat

City of Phoenix

City of Piqua

City of Pomona

City of Prescott

City of Santa Fe Water

City of Stephenville, TX

City of Tempe

City of Temple

City of Toledo, Department of Public Utilities (DPU)

City of Tucson Water Department Maintenance Division

Community Water Company of Green Valley

Dublin San Ramon Services District

Freemanville Water System, Inc