Two major wastewater treatment works in the Southampton area have welcomed a new state-of-the-art treatment process to improve water quality.

Slowhill Copse Wastewater Treatment Works in Marchwood and Millbrook Wastewater Treatment Works now have new ultraviolet (UV) technology. This means wastewater will be treated through a UV treatment process that destroys disease causing organisms, meaning wastewater that returns to the environment is much cleaner.

The improvements form part of a wider investment of £63 million to help protect shellfish in Southampton Water, with £25 million being spent at Millbrook, £18 million at Slowhill Copse, £13 million at Woolston Wastewater Treatment Works and £8 million at Ashlett Creek Wastewater Treatment Works.

John Penicud, Southern Water’s Director of Wastewater Operations, said:

“We’re delighted that both these sites now have UV technology, which is making a big difference to water quality in the area and helps our longer-term goal of improving the health of Southampton Water and protecting shellfish.

“We’re always looking for new ways to see where technology and innovation can help us in improving the environment, reducing storm overflows and creating healthier rivers and seas.”

The work is being carried out by contractor GTb, a joint venture between Galliford Try Environment and Binnies UK Ltd. Millbrook’s UV process started in November, and Slowhill Copse’s during December.

Framework Director at GTb, Martin Hall, added:

“We are delighted that the new equipment at Millbrook and Slowhill Copse is now in use. These are our first two major projects to be put into service for Southern Water. It’s a fantastic result for all involved.”