The asset improvement scheme at Southern Water's Twyford Water Supply Works, Winchester, has now been completed.
A cost of £2.3 million, the scheme provides long-term resilience and ensures water quality for customers over the next 25 years. The scheme was completed in March 2025.
The site retains its historical significance, having an original Edwardian steam engine and boilers housed in its main building. These originally powered the pumps supplying drinking water to the local area.
Twyford Waterworks was built in 1898 and is a Scheduled Ancient Monument. Working in association with Southern Water, the out-of-service areas are being restored and conserved as a museum to a high level of detail by The Twyford Waterworks Trust volunteers.
Trant Engineering, which is headquartered in Southampton, erected the new gear whilst keeping the water supply system in place. Work included pumps, pipework, electrical services and top-of-the-range water quality monitoring kit.
Mike Daly, Project Engineer from Trant said, “The site had a number of unusual challenges. One of which was to put in place a temporary 36m long, 5-ton pipe bridge to allow access for the Trust including the passage of steam traction engines and also horses along the adjacent bridleway and to retain water supply to the reservoir.”.
Graham Feldwick, Chairman of The Twyford Waterworks Trust, stated, “Trant were very considerate of the Museum, they co-operated very closely with us, kept us thoroughly informed and always worked strictly in accordance with Historic England's Scheduled Monument Consent regime.”
Alex Leece, Assistant Project Manager at Southern Water, added, “With high-profile stakeholders such as Historic England and The Twyford Waterworks Trust involved, it was important the delivery teams treated with respect a site of such historic importance.”.
