American Gas Association (AGA) www.aga.org American Public Works Association (APWA) www.pubworks.org American Water Works Association (AWWA) www.awwa.org Associated Builders & Contractors www.abc.org Associated Equipment Distributors www.aednet.org Association of Water Technologies www.awt.org Australian Pipeline Industry Association APIA www.apia.net.au Completion Engineering Association (CEA) www.cea.main.com Corrugated Polyethylene Pipe Association (CPPA) www.cppa-info.org Distribution Contractors Association (DCA) www.dca-online.org Drilling Engineering Association (DEA) www.dea.main.com ENTELEC www.entelec.org Gulf Coast Trenchless Association (GCTA) www.gctaonline.org International Pipe Line & Offshore Contractors Association (IPLOCA) www.iploca.com Indonesian Pipeline Industry Association IPIA www.ipia.or.id Interstate Natural Gas Association of America(INGAA) www.ingaa.org Midwest Energy Association www.midwestenergy.org NACE International www.nace.org National Association of Pipe Coating Applicators www.napca.com National Association of Sewer Service Companies www.nassco.org National Energy Services Association (NESA) www.nesanet.org Natural Gas Supply Association www.ngsa.org New England Gas Association (NEGA) www.nega.com Pipeline Contractors Association of Canada (PLCAC) www.pipeline.ca Pipeline Pigging Association (PPSA) www.piggingassnppsa.com Power Communications Contractors Association(PCCA) www.pccaweb.org Rocky Mountain Pipeline Contractors Association(RMPCA) www.rmpca.com Southern Gas Association (SGA) www.sga-aso.com