£2.3m upgrade completed by Trant Engineering for Southern Water

June 18, 2025

The site, near Winchester, shares the main historic building with the original Edwardian steam engine and boilers, which historically drove the pumps that supplied drinking water to the area. Built in 1898, Twyford Waterworks is now a designated Scheduled Ancient Monument and, in association with Southern Water, the parts no longer used for commercial operation are being carefully restored and maintained as a Museum by volunteers of The Twyford Waterworks Trust.

Trant Engineering installed the new equipment, including pumps, pipework, water quality monitoring and electrical equipment, whilst maintaining the water supply.

Mike Daly, Trant’s Project Engineer said:
“The site posed several unique challenges. One of which, was to install a temporary 36m long, 5-ton pipe bridge to allow access for the Trust including movement of steam traction engines, as well as horses along the adjacent bridleway, and to ensure continued water supply to the reservoir.”

Chairman of The Twyford Waterworks Trust, Graham Feldwick said:
“Trant were very considerate of the Museum, they worked closely with us, kept us well informed and always worked in strict accordance with the requirements of Historic England’s Scheduled Monument Consent system.”

Alex Leece, Assistant Project Manager at Southern Water said:
“With influential stakeholders such as Historic England and The Twyford Waterworks Trust, it was critical for the delivery teams to work with care to preserve such an important historic site.”

The £2.3 million project will provide improved resilience and water quality security for customers for the next 25 years and was finished in March 2025.