Business news

£8 million Clarification process and £4 million Carbon Addition Upgrade Completed at Derg Water Treatment Works

Posted By:
Northern Ireland Water

8th May 2024

NI Water is pleased to announce the recent completion of 2 projects totalling approximately £12 million, which involved the construction of a new £8 million clarification process and a £4 million carbon addition project at Derg Water Treatment Works (WTW), County Tyrone.

Mark Mitchell, NI Water’s Head of Integrated Capital Delivery said:

“We are delighted to announce the completion of this major upgrade at Derg, which will bring many improvements to our customers, including improved water quality and security of the local water supply.

“This key improvement scheme will also protect and future-proof the local water infrastructure for customers, businesses and tourism in the area.”

A more efficient works will directly help approximately 40,000 customers, as well as protecting the environment by improving the herbicide and organics removal at the plant. This is good news for people in Strabane, Omagh and Fermanagh.

This essential work will not only improve the water quality within the Derg network but will also provide additional security of the water supply to the Castlederg and Strabane supply area and further afield.

The existing Derg Water Treatment Works was built in 2002, and replaced the old works a few hundred meters from the current site. The upgrade involved the construction of a new clarification process and activated carbon addition at the Derg WTW site.

The 18-month construction contract was completed by Castlederg-based Lowry Building & Civil Engineering as part of the wider DLG Water Ltd, with Belfast company RPS providing project management specialist support.

The project will improve the efficiency of the existing works and will increase the throughput of Derg WTW to over 26 million litres of water per day from the River Derg and more recently, Strule. The works serves the Strabane and Omagh areas as well as supplying water into the Fermanagh area.