Iowa

Algona Municipal Utilities

Ames Water Pollution & Control Department

Atkins Municipal Water Works

Cedar Falls Utilities

Cedar Rapids Water Department (CRWD)

Central Iowa Water Association

Clay County Rural Water District

Coon Rapids Municipal Utilities"

Council Bluffs Water Works

Des Moines Water Works

West Des Moines Water Works

Iowa-American Water Company

American Water Works Company, Inc.

Clinton

Quad Cities

Iowa City Water Utility

University of Iowa Water Plant

Jefferson Water Dept.

Knoxville Water Works

Lamoni Water Utilites

LeMars Water Department

Lewis & Clark Rural Water System

Harlan Municipal Utilities

Manning Municipal Water

Mason City

Montezuma Municipal Utilities

Muscatine Power and Water

North Liberty Water Department

Poweshiek Water Association

Primghar Municipal Water Supply

Rathbun Regional Water Association, Inc.

North Coraville Lake Manor

Urbandale Water Department

Waterloo Water Works