Alabama

• Athens, Al. Utilities
• Birmingham, Al. Water Works
• Huntsville, Al. Utilities
• Mobile, Al. Area Water & Sewer System
• Montgomery, Al. Water Works & Sanitary Sewer Board
• Trussville, Al. Water Dept.
   

Alaska

• Anchorage, Ak. Water & Waste Utility
• Juneau, Ak. Water Utility
  

Arizona

• Arizona Water Company
• Community Water Company of Green Valley, Arizona
• Salt River Project, Arizona
• Scottsdale, Arizona Water
• Tempe, Arizona Water Dept.
• Tucson, Arizona Water
  

Arkansas

• Paragould, Arkansas City Light, Water and Cable
• Pine Bluff, Arkansas Wastewater Utility
• Rogers, Arkansas Water Utilities
• Siloam Springs, Arkansas Water Dept.
• West Memphis, Arkansas Utility Department
  

California

• American States Water Company dba Southern California Water Co.
• Anaheim, Ca. Public Utilities

• Imperial Irrigation District

• Metropolitan Water District of Southern California
• Mojave Water Agency
• Orange County, Ca. Water District
• San Diego, Ca. City Water Department
• San Diego County, Ca. Water Authority
• Santa Barbara County, Ca., Water Agency
• Santa Clara Valley, Ca. Water Dist.
• Santa Margarita Water District, Mission Viejo, Ca.
• Western Municipal Water District, Riverside, Ca.

District of Columbia

• District of Columbia Water And Sewer Authority

Florida

• Southwest Florida Water Management District, (swfwmd)
• South Florida Water Management District

Idaho

• United Water Idaho

Kentucky

• Kentucky Metropolitan Sewer Dist.
• Kentucky - American Water Home Page
• Bowling Green, Ky., Municipal Utilities
• Eklton, Ky., Utility Department
• Glasgow, Ky., Water Company
• Hardin County, Ky., Water Dist. No. 2
• Henderson, Ky., Water Utility
• Louisville, Ky., Water Company
• Northern Kentucky Water District
• Owensboro, Ky., Municipal Utilities
• Paducah, Ky., Water Works
• Richmond, Ky., Utilities

Kansas

• Dickinson County, Kansas, Water Improvement Program
• Northwest Kansas Groundwater Management Dist. No.4
• Southwest Kansas Groundwater Management Dist. No. 3

Maine

• Augusta, Maine Water District
• Bangor, Maine Water District
• Berwick, Maine Water Dept. (report only)
• Biddleford and Saco, Maine Water Co.
• Canton, Maine Water Dist. (parttime)
• Philadelphia Suburban Corp. dba Consumers Maine Water Dist.
• Hallowell, Maine Water Dist.
• Hampden, Maine Water Dist.
• Houlton, Maine Water Dist.
• Kennebec, Maine Water Dist.
• Lewiston, Maine Water and Sewer Dist.
• Old Town, Maine Water District
• Portland, Maine Water Dist.
• Sanford, Maine Water Dist.

Maryland

• Maryland Beaches Water District
• Maryland Chesapeake Utilities Corp.
• Easton, Maryland Utilities
• WSSC: The Washington Suburban Sanitary Commission--Laurel, Maryland
• Washington County, Maryland Water and Sewer Department

Massachusetts

• Boston, Mass. Water and Sewer Commission
• Cambridge, Mass. - Water Department
• Littleton, Mass. Electric Light and Water Departments
• Taunton, Mass. Water Department
• Westford, Mass. Water Department
• Yarmouth, Mass. Water Division

Michigan

• Alpena, Mich. Water District/EarthTech Operation Services

• Coldwater, Mich. Board Of Public Utilities
• Lansing, Mich. Board of Water & Light
• Lansing, Mich. West Side Water
• Ypsilanti, Mich. Community Utilities Authority
• Zeeland, Mich. Board of Public Works

Minnesota

• Austin, Minn. Utilities

• Brainerd, Minn. Public Utilities
• Breckenridge, Minn. Public Utilities
• East Grand Forks, Minn. Water & Light Department
• Hibbing, Minn. Public Utilities
• Mora, Minn. Municipal Utilities
• Owatonna, Minn. Public Utilities
• Rochester, Minn. Public Utilities
• Saint Paul, Minn. Regional Water Services
• Western Lake Superior, Minn. Sanitary District
• Willmar, Minn. Municipal Utility Dist.

Nevada

• Big Bend Water District, Laughlin, Nev.

• Clark County, Nevada, Water Reclamation District
  

New Hampshire

• New Hampshire water supply sources
• Exeter, New Hampshire Public Works Dept.
• Pembroke New Hampshire Water Department
• Portsmouth, New Hampshire Public Works
  

New Mexico

• Las Cruces, N.M. Utilities Dept.
• Truth or Consequences, New Mexico Water Department
  

New York

• New York City Water Supply - Water Quality

• Watervliet, N.Y. water and sewer department
  

North Carolina

• Biltmore Forest, North Carolina Water Department

• Boone, North Carolina Public Utilities
• Mint Hill, North Carolina Private Wells
• Orange Water and Sewer Authority, Carrboro, North Carolina
  

Ohio

• City of Cincinnati - Greater Cincinnati Water Works
• City of Cleveland Division of Water
• Lucas County Ohio Soil and Water Program

Oklahoma

• Ada, Oklahoma Water Supply
• Lawton, Okla. Water Treatment Plant
• Tulsa, Okla. Water

Oregon

• Portland, Ore. Bureau of Water Works
• Tualatin Valley, Ore. Water District
  

Rhode Island

• Jamestown, R.I. Public Utilities Dept.

South Carolina

• Spartanburg, South Carolina Water System/Sanitary Sewer District

South Dakota

• Pierre, South Dakota Water Department
• Mitchell, South Dakota- Public Works –Water

Tennessee

• Memphis, Tennessee Light, Gas and Water

Texas

• Austin, Texas - Water and Wastewater Utility
   

Washington

• Asotin County, Wa. PUD No. 1
   

Wyoming

• Casper, Wyoming Water Department
• Cheyenne, Wyoming Board of Public Utilities
• Laramie, Wyoming Water and Wastewater