Setting the Standard for Water Jetting Safety

Setting the global standard for training, safety standards and operational excellence in high-pressure water jetting.

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Latest Safety Alert: High pressure water jetting foot injury

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What we do

Championing our industry and our members

The Water Jetting Association (WJA) is the trade body that represents organisations involved in all aspects of water jetting, from pressure washing to ultra-high pressure water jetting.

We work with contractors, manufacturers, equipment suppliers, training and providers, and government bodies.

  • Promoting our industry-leading code of practice
  • Providing high quality accredited training
  • Giving our members a voice across our industry
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40+ Years of Industry Leadership
Membership

Join the WJA

Join us and benefit from access to the WJA Code of Practice, plus expert technical support, free legal and business advice, industry recognition for setting trusted standards, and much more.

Become a Member Member Benefits

Member Benefits

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Audited member scheme Audited member scheme

WJA water jetting training courses 

The WJA is the largest provider of water jetting training in the UK, accredited by City & Guilds. Our courses are also delivered internationally, most notably in the oil and gas production areas of the Middle East and North Africa.

1 day

Safety Awareness

The mandatory class-based course required for all water jetting operatives before taking specialised practical modules.

1 day

Practical Water Jetting Modules

Modules that provide practical hands-on instruction and assessment for a range of water jetting techniques.

1 day

Pressure Washing

Delivering instruction on operational safety and productivity in the use of commercial pressure washing systems.

New

New courses for 2026

The WJA is launching an exciting new programme of City & Guilds accredited courses for water jetting and non-water jetting skills.

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Next available course

Drain, Sewer & Gun & Safety Awareness

27-28 Oct 2026 S62 6EW
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Code of Practice

The WJA Code of Practice represents the most detailed and advanced set of water jetting standards in the industry.

Safety is everything the WJA stands for and The Code of Practice directly informs the content and learning objectives of our training courses.

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WJA Code of Practice

Industry News

Insights, updates and innovations in water jetting.

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WJA Awards – Jeff wins outstanding achievement accolade for cracking the code News

WJA Awards – Jeff wins outstanding achievement accolade for cracking the code

October 21st, 2026

After more than 30 years of dedicated service to the Water Jetting Association, Jeff Haigh believes his latest contribution has been the best and most satisfying. The WJA Board commissioned him to work with WJA Technical Manager Gordon Taylor to create the new WJA Code of Practice – turning three codes into one. In spring […]

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WJA issues cold weather guidance to eliminate jetting risks Water Jetting Association

WJA issues cold weather guidance to eliminate jetting risks

October 13th, 2026

The Water Jetting Association is advising contractors to make sure their operatives are carrying out thorough autumn and winter cold weather checks and taking safety precautions. Specific checks and actions are needed before water jetting equipment is used and at the end of shifts to mitigate the risks caused by ice build-up, especially in hose […]

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WJA Awards 2026 – How Alfie Jones fell in love with the drainage industry and now has a new goal Water Jetting Association

WJA Awards 2026 – How Alfie Jones fell in love with the drainage industry and now has a new goal

October 12th, 2026

Alfie Jones had high hopes of becoming a professional footballer. Then a devastating knee injury cut short his career. Now, though, a positive attitude, matched by determination to succeed, has led the 19-year-old to a new life in the drainage industry. He has also been named Young Person of the Year in the inaugural WJA […]

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Member Testimonials

Trusted by industry leaders worldwide.

The WJA is the recognised representative organisation for the water jetting industry and promotes best practice, so we need to lead by example by being part of it.

Brian Swankie

Specialist Services Department Manager. Bilfinger UK

The WJA has a proven track record in raising the safety and productivity standards of water jetting through its codes of practice and training programme. It’s leading the way in our industry. If you’re serious about water jetting you have to be in it.

Scott Wharton

Director, CH Environmental Services

We’re pleased to be a WJA member. It helps define us as a business, and the expert advice the WJA can give can be very useful.

Andy Welsh

Director, Premiair Plant Hire

We want to further develop our pressure washing training offer, and being a member of the WJA makes absolute sense to help us do that.

Richard Selvestraitis

Director, Ryno Training

Howden Insurance is a WJA member because we work within the water jetting industry. We insure against risks. Being a WJA member helps us to understand those risks. We also have access to WJA codes of practice, which is amazing. Being a WJA member also allows us to share knowledge and give something back.

Oliver Newport

Development Executive, Howden Insurance

Our clients are delighted with the quality and impact of WJA City & Guilds water jetting training, not least because the WJA sets the gold standard for water jetting in the UK. It’s a natural next step for them to align your business with that standard and become a WJA member.

Simon Goddard

Director, Sentina Training and Consultancy

Contact Us

Have questions about training modules or membership benefits? Our team is here to provide expert support.

Headquarters

The Engine House, 2 Veridion Way, Erith, Kent, DA18 4AL

WJA team in the field