Southern Water is making a substantial investment of £2.5 million to upgrade its Grayswood Wastewater Treatment Works in Haslemere. This upgrade hopes to reduce phosphorus levels and improve water quality in the area.

The improvement works at the village near Haslemere are now underway and it is estimated that the project will be completed by the end of March 2025. The work includes building a new treatment process, known as Ferric Dosing that helps reduce the amount of phosphorous leaving the site which in turn improves water quality.

Chris Tinker, Project Manager for Southern Water, said:

“We’re pleased to see the start of this project at Grayswood and we are keen to continue investing in our treatment works across the region. These types of investment in upgrades will help improve our environmental performance and improve water quality. It’s vital that we continue to improve how we treat wastewater so that capacity increases and the quality of the final effluent leaving the site it as high as it can be.”

Southern Water is responsible for providing drinking water to 2.6 million customers and wastewater services to 4.6 million people across Kent, East and West Sussex, Hampshire, and the Isle of Wight. On average, the company supplies 556 million litres of water daily and treats 1,337 million litres of wastewater.

The company has invested £3 billion into its infrastructure, planned between 2020 and 2025.

Any sewage discharge from Grayswood WTW can be viewed on The Rivers Trust sewage map: https://theriverstrust.org/sewage-map