The Water Jetting Association (WJA) is a trade association representing contractors, manufacturers, hirers and other organisations that have a professional and commercial interest in all aspects of high-pressure water jetting. WJA support the highest possible safety and technical standards for all forms of water jetting, including ultra-high-pressure water jetting, high pressure water jetting, pressure washing, and drain and sewer cleaning. WJA are also committed to furthering our members’ interests – in terms of commercial opportunities, brand association, technical advice and high-pressure water jetting training.