Guides
Download guides, technical documents and resources published by the Water Jetting Association.
All Guides
Social Packs
Noise Report
The WJA Noise Report reviews hand-arm vibration and noise levels from high-pressure water jetting equipment, supporting safer working practices and exposure control.
Articles of Association
The WJA Articles of Association set out the company’s legal structure, membership rules, director responsibilities, governance processes and operating procedures.
Procedure Forms
Jet Calculator
The WJA Jet Sizing Calculator helps water jetting professionals calculate jet size, pressure, flow, velocity and reaction force, supporting safer and more accurate equipment setup.
Prospectus
The WJA Prospectus introduces the association, its training, Codes of Practice, membership benefits and role in raising safety and standards across the water jetting industry.
Training Brochure
The WJA Training Brochure outlines the association’s accredited courses, practical modules, certification process and refresher training for safe water jetting.
