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Isle of Wight

We’re investing £99.4 million on the Isle of Wight to improve bathing water quality, prevent flooding and secure future water supplies by developing new water sources, reducing reliance on the mainland.

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Reducing reliance on the mainland

Our investments on the Isle of Wight will enhance the coastline by improving bathing water quality and cutting storm overflows across the Island. To do this, we're upgrading our network, installing more sustainable drainage and tackling illegal misconnections.

We’re also working hard to reduce the risk of flooding and burst mains to better protect local communities.

Much of the island’s water supply currently comes from the mainland. By developing new sources—such as a water recycling plant in Sandown—we’re reducing this reliance and securing future water supplies.

Our Isle of Wight 2025-2030

investment plans

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8.5m litres a day

We’re developing plans for a water recycling scheme in Sandown to secure future water supplies. The project could produce up to 8.5 million litres of water a day during a drought—enough to fill 3.4 Olympic swimming pools daily and meet the needs of 60,000 customers.

£1.9m at Calbourne

To reduce outages and supply interruptions, we’re investing £1.9 million at Calbourne Water Supply Works to increase the site’s resilience to changes in raw water quality. We’re also installing additional treatment to remove harmful bacteria and protect drinking water supplies.

13km replacement mains

We’re replacing over 13km of water mains across the island to future-proof our network and reduce the risk of outages and supply loss.

£71.8m in Sandown

£58m will introduce sustainable drainage systems, increase storage and pumping capacity at Sandown (and Wroxall) to reduce storm overflow releases and improve local water quality. We’re also investing £13.8m at Sandown to improve the treatment of sludge – a byproduct of wastewater treatment. It's a valuable resource for farmers and we use the gases created during the treatment process to generate energy, aiming to generate 25% of our own by 2025.

£8.8m in Wroxall

£8.8m will help us to remove more nitrogen from the site’s outflow into rivers. This is part of our commitment to improving water quality in over 1000km of rivers

£2.42m for the River Eastern Yar

We’ll be contributing £2.42m to the River Eastern Yar catchment scheme to help protect local rivers and improve water quality. This work follows an aerial survey conducted to investigate potential causes of water quality deterioration in the Eastern Yar catchment.

£10.6m for West Isle of Wight

We’re enhancing the power resilience at our Carisbrooke Water Supply Works to reduce the risk of outages. We’re also replacing over 12,000m of mains on the island including Copse Lane in Freshwater and Ningwood Hill in Cranmore.

£71.8m in Sandown

£58m will introduce sustainable drainage systems, increase storage and pumping capacity at Sandown (and Wroxall) to reduce storm overflow releases and improve local water quality. We’re also investing £13.8m at Sandown to improve the treatment of sludge – a byproduct of wastewater treatment. It's a valuable resource for farmers and we use the gases created during the treatment process to generate energy, aiming to generate 25% of our own by 2025.

£8.8m in Wroxall

£8.8m will help us to remove more nitrogen from the site’s outflow into rivers. This is part of our commitment to improving water quality in over 1000km of rivers

£2.42m for the River Eastern Yar

We’ll be contributing £2.42m to the River Eastern Yar catchment scheme to help protect local rivers and improve water quality. This work follows an aerial survey conducted to investigate potential causes of water quality deterioration in the Eastern Yar catchment.

£10.6m for West Isle of Wight

We’re enhancing the power resilience at our Carisbrooke Water Supply Works to reduce the risk of outages. We’re also replacing over 12,000m of mains on the island including Copse Lane in Freshwater and Ningwood Hill in Cranmore.

8.5m litres a day

We’re developing plans for a water recycling scheme in Sandown to secure future water supplies. The project could produce up to 8.5 million litres of water a day during a drought—enough to fill 3.4 Olympic swimming pools daily and meet the needs of 60,000 customers.

£1.9m at Calbourne

To reduce outages and supply interruptions, we’re investing £1.9 million at Calbourne Water Supply Works to increase the site’s resilience to changes in raw water quality. We’re also installing additional treatment to remove harmful bacteria and protect drinking water supplies.

13km replacement mains

We’re replacing over 13km of water mains across the island to future-proof our network and reduce the risk of outages and supply loss.

Area overview

On the Isle of Wight we have:

  • 7 Water supply works
  • 25 Water service reservoirs
  • 19 Wastewater treatment works
  • 156 Wastewater pumping stations.
Area overview

In the Isle of Wight we have:

  • 7 Water Supply Works
  • 25 Water Service Reservoirs
  • 19 Wastewater Treatment Works
  • 156 Wastewater Pumping Stations
Area overview

In the Isle of Wight we have:

  • 7 Water Supply Works
  • 25 Water Service Reservoirs
  • 19 Wastewater Treatment Works
  • 156 Wastewater Pumping Stations