We strive to make our sites attractive habitats to a variety of plant and animal life and are working to improve the biodiversity of the land we own.


We impact the environment every day with the emissions we create and energy we use treating water. To protect and enhance it both now and in the future, our Biodiversity Action Plan sets out to:

  • Minimise the impact that we and our customers have on the environment
  • Actively improve areas of benefit to our customers

How we will deliver this

  • Continuing to keep the land we own rich in biodiversity while meeting all legal requirements for supplying drinking water
  • Preventing the potential loss of attractive plant and animal habitats and mitigating risks to the environment from our operations, while reinstating where loss has occurred 
  • Extending our partnership working to both protect and enhance the environment
  • Raising awareness of and reporting our activities to reach the largest number of people possible while making sure the information and work we have delivered is used to inform catchment decisions

What we’re doing:

  • Carrying out habitat surveys on our land
  • Enhancing our hedgerows  
  • Surveying for (and controlling) invasive non-native species on our sites and treating those identified 
  • Working to achieve The Wildlife Trusts’ Biodiversity Benchmark to achieve continual biodiversity enhancement and protection at three of our sites by 2025. Work so far includes habitat surveys, reducing mowing to allow wildflowers to flourish, installing bird boxes and creating bug hotels and deadwood piles to provide a food source and habitat for a range of species from stag beetles to bees and birds

Case studies

Eel screens 

We installed eel screens at our Goatbridge site in Hackbridge to support the recovery of the endangered eel population by preventing them from passing through a small mesh and allowing them to continue their movements up and down the river.

Barn Owl boxes

Barn Owl boxes have been installed near our Bough Beech reservoir which increases the available areas for them to nest. The Barn Owl Trust is also building a tower to further increase these nestings.

Wildflower planting

Chalk grasslands are often rare and fragmented but home to incredibly rich and diverse plants and insects. We have adapted our maintenance regimes to create wildflower areas to enhance our chalk grasslands.

Working with others

We have worked with Surrey Wildlife Trust to clear the banks of the Gibbs Brook in Godstone, allowing more light into the channel to help the river return to its natural state. This included clearing scrubs which were used to create a dead hedge and deadwood piles to provide an important habitat for a range of species.

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