Treatment Program Subscribers


Partnership Treatment Program Subscribers

(As of December 2016)


The Water Works Board of the City of Birmingham


Anchorage Water & Wastewater Utility


Arizona American Water
City of Chandler
City of Phoenix
City of Tempe


Beaver Water District
Central Arkansas Water


Alameda County Water District
California Water Service Company
Castaic Lake Water Agency
City of Antioch
City of Escondido
City of Fairfield
City of Fresno
City of Napa
City of Poway
City of Redding
City of San Diego
City of Santa Cruz
City of Vallejo
Contra Costa Water District
East Bay Municipal Utility District
Golden State Water Company
Long Beach Water Department
Metropolitan Water District of Southern California
Modesto Irrigation District
San Francisco Public Utilities Commission
Santa Clara Valley Water District
Yucaipa Valley Water District
Zone 7 Water Agency


Aurora Water
Centennial Water and Sanitation District
City and County of Broomfield
City of Boulder 
City of Canon City
City of Erie 
City of Fort Collins Utilities
City of Golden
City of Grand Junction
City of Longmont
City of Louisville
City of Loveland
City of Thornton
City of Westminster
Clifton Water District
Colorado Springs Utilities
Denver Water
Eagle River Water & Sanitation District
Left Hand Water District
Montezuma Water Company
Parker Water & Sanitation District
Upper Eagle Regional Water Authority
Ute Water Conservancy District


Aquarion Water Company
Connecticut Water Company - Guilford System
Connecticut Water Company - Naugatuck System


City of Wilmington

District of Columbia

Washington Aqueduct


City of Tampa


Atlanta-Fulton County Water Resources Commission
City of Cartersville
City of Thomaston
Columbus Water Works
Douglasville-Douglas County Water & Sewer Authority
Macon Water Authority


City of Wahpeton
Marshalltown Water Works


Aqua Illinois
Central Lake County Joint Action Water Agency
City of Aurora
City of Chicago
City of Moline, Dept. of Public Works
Illinois American Water
Village of Glencoe
Village of Wilmette
Village of Westmont


Citizens Energy Group
Evansville Water & Sewer Utilities
Fort Wayne City Utilities
Indiana American Water


Iowa American Water
City of Davenport
City of Wahpeton
Marshalltown Water Works


City of Lawrence
City of Olathe
City of Wichita Water & Sewer Dept.
Kansas City Board of Public Utilities
Water District #1 of Johnson County
Kentucky Frankfort Electric and Water Plant Board
Hardin County Water District No. 1
Henderson Water Utility
Kentucky American Water
Louisville Water Company
Paducah Water


City of Bossier City Water Plant
American Water Military Services/ Fort Polk


City of Cumberland Utilities Division
Easton Utilities
City of Rockville
Maryland American Water
Washington Suburban Sanitary Commission


City of Ann Arbor Public Utilities Department
Great Lakes Water Authority
City of Saginaw


Saint Paul Regional Water Services


Kansas City Water Department
City Utilities of Springfield
City of St. Louis Dept. of Public Utilities
Missouri American Water


Metropolitan Utilities District


Truckee Meadows Water Authority
Southern Nevada Water Auth./Las Vegas Valley Water Dist.

New Hampshire

Manchester Water Works
Pennichuck Water Works
City of Concord New Hampshire Water Department

New Jersey

Brick Township Municipal Utilities Authority
Passaic Valley Water Commission
United Water New Jersey
Middlesex Water Company
New Jersey American Water
American Water (North Brunswick NJ Water Treatment)

New Mexico

Albuquerque Bernalillo County Water Utility Authority

New York

Erie County Water Authority
Monroe County Water Authority
City of Rochester Water & Lighting Bureau
Onondaga County Water Authority
City of Troy Department of Public Utilities
Village of Ossining
Metropolitan Water Board/ County of Onondaga
Town of Queensbury
Canandaigua Water

North Carolina

Orange Water and Sewer Authority
Charlotte Water
City of Durham
Fayetteville Public Works Commission
City of Greensboro - Water Resources Dept.
City of Raleigh
Cape Fear Public Utilities Authority
City of Henderson
Harnett County Department of Public Utilities
Town of Cary
Brunswick County Public Works
City of Mount Holly
City of Morganton
Greenville Utilities Commission
City of Sanford

Nova Scotia, Canada

Halifax Water


Aqua Ohio Water Company (formerly Ohio American Water Co.)
Cleveland Division of Water
Lake County Department of Utilities


City of Tulsa
Shawnee Municipal Authority | City of Shawnee

Ontario, Canada

Chatham-Kent Public Utilities Commission 
Regional Municipality of Halton


City of Grants Pass
City of The Dalles


Aqua Pennsylvania
Birdsboro Municipal Authority
Blossburg Water Authority
Borough of Chambersburg
Brodhead Creek Regional Authority (Stroudsburg)
Cambria Township Water Authority
Capital Region Water
Carlisle Borough Municipal Authority
Chester Water Authority
City of Bethlehem
City of Lancaster
Conemaugh Township Municipal Authority
Downingtown Municipal Water Authority
East Greenville Borough Water Department
Easton Suburban Water Authority
Elizabethtown Area Water Authority
Ephrata Area Joint Authority
Galeton Borough Authority
Gallitzin Water Authority
Gettysburg Municipal Authority
Greencastle Area, Franklin County, Water Authority
Harrison Township/Natrona Water Authority
Highland Sewer & Water Authority
Hooversville Borough Water System
Huntingdon Borough Water Plant
Hyndman Borough Water Department
Jersey Shore Area Joint Water Authority
Jim Thorpe Water Department
Kittanning Suburban Joint Water Authority
Lehigh County Authority
Mahanoy Township Authority
Mansfield Borough Municipal Authority
Meyersdale Municipal Authority
Middleburg Municipal Authority
Mifflintown Municipal Authority
Millersburg Area Authority
Moon Township Municipal Authority
Municipal Authority of Portage
Municipal Authority of the Borough of Derry
Municipal Authority of the Borough of Lewistown
Municipal Authority of the Township of Robinson
North East Borough
North Penn and North Wales Water Authority
Northampton Borough Municipal Authority
Oakmont Water Authority
Pennsylvania American Water
Philadelphia Water Department
Pike Township Municipal Authority
Pittsburgh Water and Sewer Authority
Pottstown Utilities Department
Reading Area Water Authority
Red Lion Municipal Authority
Schuylkill County Municipal Authority
Shamokin Dam Borough
Shenandoah Municipal Water Authority (MABS)
Shippensburg Water Authority
Spring Township Municipal Authority
State College Borough Water Authority
Union City Municipal Authority
Borough of Waynesboro
Western Berks Water Authority
Williamsport Municipal Water Authority
Williamstown Borough Authority
Wrightsville Water Supply
York Water Company

South Carolina

Charleston Water System
City of Columbia Water Works
Greenville Water System
Spartanburg Water
Georgetown County Water & Sewer District
Greenwood Commissioners of Public Works
City of Clinton
City of Newberry
Orangeburg Department of Public Utilities
Easley Combined Utilities
Sartex-Jackson-Welford-Duncan (SJWD) Water District
Beaufort Jasper Water and Sewer Authority
Santee Cooper Regional Water System
Grand Strand Water and Sewer Authority
City of North Augusta Public Utilities
Woodruff-Roebuck Water District


Tennessee American Water
City of Johnson City
City of Kingsport Water Services Division
Knoxville Utilities Board
Metro Government of Nashville and Davidson County
City of Bristol Tennessee Water Plant
Fayetteville Water and Sewer System
Murfreesboro Water & Sewer Department
Clarksville Gas & Water Department


Austin Water Utility
Dallas Water Utilities
El Paso Water Utilities Public Service Board
City of Houston
City of Kilgore


Salt Lake City Public Utilities
Metropolitan Water District of Salt Lake & Sandy
Central Utah Water Conservancy District
Jordanelle Special Service District


Aqua Virginia
Spotsylvania Co. Dept. of Utilities
City of Chesapeake Department of Public Utilities
Chesterfield County Utilities Department
City of Newport News Waterworks
Town of Culpeper
City of Winchester
Appomattox River Water Authority
Gloucester County Department of Public Utilities


Burlington Public Works Water Division
Champlain Water District


City of Bellingham Dept. of Public Works
City of Everett Public Works Dept.


Cudahy Water Utility
Oak Creek Water and Sewer Utility

West Virginia

West Virginia American Water
Clarksburg Water Board