Our History

IWJS Ltd has a long history of successful change and innovation, adapting to shifts in markets and embracing new 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 drains and pipelines across the entire UK and have become one of the leading companies within 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. It wasn’t long before IWJS were cleaning the council drains (later handed over to Anglian Water) in Essex, Suffolk and Norfolk. Eventually IWJS were doing the same for Yorkshire Water and Welsh Water with IWJS pioneering and dominating the tunnel cleaning industry in the 1970/80s.

Company Timeline

It is our goal for everyone working on our behalf to go home healthy and safe at the end of each and every day.

  • 1977

    Ken Cooper sets up as owner operator in Woolpit, establishing a company that will grow into IWJS Ltd

  • 2000

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

  • 2003

    Adler and Allen, who specialise in waste oil management, acquires IWJS. Adler & Allen continue to invest and grow the company.

  • 2004

    Colchester office opens on Mersea Island, moves to Colchester depot in 2005 and again in 2011 to the current location at Marks Tey.

  • 2010

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

  • 2011

    IWJS Ltd forms to manage the acquisition of Aquajet GB and DSSE which continued to operate as separate entities until 2014. This acquisition takes the turnover to in excess of £25m.

  • 2013

    New Manchester depot opens in Irlam

  • 2014

    The Company re-brands to celebrate completion of company restructure

  • 2015

    The new Leeds depot in Brighouse opens

  • 2016

    Launch of new health and safety training company Industrial Water Training Services (IWTS) Ltd at Oldham in Lancashire.

  • 2016

    Launch of new specialist confined spaces rescue service IWJS Rescue based in Woolpit.

  • 2017

    IWJS Ltd celebrates its 40th Anniversary. The Company is now firmly established as one of the leading and most innovative industrial Waste Water Management firms in the UK. With a turnover approaching £30 Million and employing over 500 people, IWJS is a trusted supplier to the major water utilities, as the Company continues its growth.

  • 2019

    M Group Services, a leading provider of services to essential infrastructure markets in the UK, acquires IWJS Ltd.

  • 2023

    IWJS is sold to Peter O’Dowd in its entirety on 21st September 2023. Industrial Water Jetting Systems Limited will continue its operations from what will now be the Head office in Manchester and Colchester, in addition to strategic depots for specific contracts (Raynesway). This continuity will provide a stable foundation for the business as it embarks on a new phase of its evolution.