5 Live Updates arrow
Account Login

Work starts on £3m upgrade to West Wellow Wastewater Treatment Works in Hampshire

Work to increase the capacity of West Wellow Wastewater Treatment Works near Romsey is underway, in an effort to further reduce the use of storm overflows.


We will be installing three new tanks and adding biological treatment units to improve water quality – cutting the likelihood of storm overflows into the River Blackwater. The work will also help us protect the ecology and enhance the water quality of the river. 

The work forms part of a wider £2bn investment between 2020 and 2025 by Southern Water to improve our environmental performance across our region. 

Project Manager, Taniko Aston-Kolek, said: 

“We’re delighted to be starting work upgrading West Wellow Wastewater Treatment Works. We understand the concerns around storm overflows and one way we can reduce them is by significantly investing in our assets and increasing the amount of wastewater we can treat especially when there is heavy rain. 

“We’d like to thank the local community for their understanding while this work happens.” 

It is expected that the project will be complete by Spring next year. 

Your questions answered

Please contact Harry Palmer, Customer Liaison Manager, Trant Engineering, on Mobile number 07751744026 or harry.palmer@trant.co.uk , Monday to Friday, 8am to 5pm.

Alternatively, please call Southern Water, out of hours, on 0330 3030 368. Just tell us you’re calling about Capital Projects, with Project Reference Number (PRN) 751107, so we can help you more quickly. Or you can email us at capitalcomms@southernwater.co.uk.

We would like to thank you for your support and patience whilst we undertake this essential work.