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Air & Waste Management Association
American Boiler Manufacturers Association
American Concrete Pipe Association
American Consulting Engineers Council
American Fire Sprinkler Association
American Institute of Architects
American Iron and Steel Institute
American National Standards Institute
American Society of Civil Engineers American Society of Heating, Refrigerating and Air-Conditioning Engineers
American Society of Mechanical Engineers
American Society of Plumbing Engineers   American Society of Sanitary Engineering American Society for Testing and Materials American Subcontractors Association
American Supply Association
American Water Works Association
American Welding Society
Associated Builders & Contractors
Associated General Contractors
Association of Iron and Steel Engineers
Cast Iron Soil Pipe Institute
Construction Contractors Alliance
Construction Innovation Forum
Construction Specifications Institute
Contractors 2000
Copper Development Association
Dan Holohan Inc.
Design-Build Institute of America
Ductile Iron Pipe Research Association
Environmental Protection Agency
Factory Mutual
Flex Fire Protection Design
International Cost Engineering Council
International Federation of Consulting Engineers (FIDIC)
Mechanical Contractors Association of America
National Association of Homebuilders
National Association of Oil Heating Service Managers
National Association of Plumbing-Heating-Cooling Contractors
National Fire Protection Association
National Fire Sprinkler Association
National Kitchen & Bath Associaton
National Society of Professional Engineers
Plumbing-Heating-Cooling Information Bureau
Plumbing & Drainage Institute
Plumbing Manufacturers Institute
Quality Service Contractors
Residential Fire Safety Institute
Underwriters Laboratories
United Association (Plumbers & Pipefitters Union)
Union Affiliated Contractors (UAC)
U.S. Army Corps of Engineers
U.S. Department of Energy
U.S. Government Agencies
Water Quality Association

State PHCC Organizations

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Consolidator Corner

Blue Dot
Comfort Systems USA
Group Maintenance America Corp.
R.S. Andrews
Service Experts
ServiceMaster
U.S. Filter

EPA - Environmental Protection Agency official web site

NAWT - National Association of Waste Transporters

NOWRA - National Onsite Wastewater Recycling Association

NPCA - National Precast Concrete Association

NSFC - National Small Flows Clearinghouse

PSAI - Portable Sanitation Association

Sewer Connection - Subscribe to the Sewer Discussion List

WEF - Water Environment Federation

WJTA - Waterjet Technology Association