Our story

IWJS has a long history of successful change and innovation, adapting to shifts in markets and technologies. From its humble beginning, the company has delivered services in many sectors. Most recently, IWJS has been best known for its superior service delivery, innovation, trusted partner approach and ability to invest. Over the years we have cleaned and surveyed thousands of miles of drain and pipeline across the entire UK and have become one of the leading companies in our industry.

IWJS’s history dates back to June 1977 when Ken Cooper set up operations from Woolpit, Suffolk. One of his first jobs was cleaning safety kerbs on athletic tracks. However, it wasn’t long before IWJS were cleaning the council drains (later handed over to Anglian Water) in Essex, Suffolk and Norfolk. Before long IWJS were doing the same for Yorkshire Water and Welsh Water with IWJS pioneering and dominating the tunnel cleaning industry in the 1970/80s.


2000 – IWJS make their first acquisition of Arrow Drain Services, which then became the Lincoln depot

2003 – IWJS was acquired by Adler and Allen who specialise in waste oil management. Adler & Allen continued to invest and grow the company until 2010 when it was sold to its current owner.

2004 – Colchester office opened on Mersea Island, moved to Colchester depot in 2005 and again in 2011 to the current location at Marks Tey.

2010 – IWJS sold to Christopher Stewart. Christopher had been supporting IWJS for Adler & Allen through a few difficult times so when the company went up for sale Christopher took the company on.

2011 – IWJS Group formed to manage the acquisition of Aquajet GB and DSSE which continued to operate as separate entities until 2014. This acquisition took the turnover to in excess of £25m.

2013 – New Manchester depot opens in Irlham.

2014 – Company rebranded to celebrate completion of company restructure.

2015 – New training company launched, Industrial Water Training Services (IWTS), in Oldham, Lancashire.


  • IWTS Launches New Flood Defence Course at Flood ExpoSeptember 25, 2017 - 1:06 pm

    SURFACE WATER FLOOD DEFENCE COURSE LAUNCHES AT FLOOD EXPO 2017 IWTS is delighted to offer a new course to train those required to meet the challenges of surface water flooding – with the first fully accredited training in the UK! The Local Government Authority states that no single body is responsible for managing flood risk. […]


Both IWTS and parent company IWJS are industry leaders, when it comes to fresh ideas and innovation, in the waste water management and health and safety training sectors.


We are always looking for the right people who share our passion for delivering the best possible service. If you’re interested get in touch today.

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View our Environmental Policy Statement

View our Quality Policy Statement

View our Waste Carrier certificate