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Contractors announced for Plymouth's new water treatment works

image depicting New water treatment process
New water treatment process
The major contractors who will be designing and building a new £60million water treatment works to serve Plymouth and the surrounding area have been announced by South West Water.

PWN Technologies, a leading water technology company based in the Netherlands, will be responsible for the design, installation and commissioning of the main water treatment process - the first time this technology has been used in the UK.

Global design and consultancy firm Arcadis is the main design contractor, in partnership with consulting engineers Pell Frischmann. Together they will be responsible for all the design work outside of the key treatment process.

Infrastructure group Balfour Beatty is the main construction contractor, in partnership with Interserve, responsible for the construction of all infrastructure, buildings and pipelines for the new water treatment works.  

Arcadis, Pell Frischmann, Balfour Beatty and Interserve have been working with South West Water as part of the company's H5O engineering delivery alliance since 2009.

Construction is due to start at Roborough, just north of Plymouth, next month. The new, state-of-the-art works will replace the outdated treatment works at Crownhill in Plymouth, which was built in the 1950s and is reaching the end of its useful life.

The main construction is scheduled to finish by December 2017 and become operational in September 2018, with the existing Crownhill works retiring from service a few months later.

Around 150 people are expected to be employed during construction.

The new works will use cutting-edge treatment processes, designed and developed by PWN Technologies, and tested at a prototype facility at Crownhill from June 2013 until June 2015.

The new technology uses suspended ion exchange (SIX), inline coagulation (ILCA) and ceramic membrane microfiltration (CeraMac). It is the first time that this technology has been used in the UK.

Senior Project Manager Mike Court said: "We're delighted to officially welcome our partners PWN Technologies, Balfour Beatty, Interserve, Arcadis and Pell Frishmann on board for what promises to be a very exciting and globally significant project.

"The new treatment works will meet the needs of Plymouth's growing population and provide a secure, high-quality drinking water supply for the wider Plymouth area for generations to come."




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