![A photo of a dock on Isle of Wight with boats](/media/yqwpnhvp/isle-of-wight.jpg?v=1daf224fff965d0&format=WebP)
Isle of Wight
We've been working with local communities, businesses and authorities to reduce the use of storm overflows on the Isle of Wight.
The challenge
The Isle of Wight Pathfinder is made up of eight sub-catchments. Sandown Waste Treatment Works handles more than 90% of the wastewater treatment for the island. Almost all the sewers serving towns on the Isle of Wight are combined, meaning that rainwater and foul water both enter the same network. After periods of heavy rainfall, the extra rainwater can overwhelm the system, leading to the use of storm overflows. In 2020, Sandown had the largest number of storm overflow releases.
Due to the mix of catchments within one defined area, this offered us a great opportunity to trial different solutions to slow the amount of rainwater entering the sewers.
To do this, we’re building strong relationships with local partners and are committed to delivering interventions that will overcome these surface water challenges.
What we're doing
Results
Our Pathfinder project in the Sandown catchment is due to be completed by 2025. Southern Water is working closely with the Isle of Wight Council and the Environment Agency to identify further opportunities, including green high streets and improving network efficiency. You can view the full reports using the links below.
Results
Our Pathfinder project in the Sandown catchment is due to be completed by 2025. Southern Water is working closely with the Isle of Wight Council and the Environment Agency to identify further opportunities, including green high streets and improving network efficiency. You can view the full reports using the links below.
70%
Our work in Havenstreet reduced storm overflows in the area by 70%. You can read the full case study using the link below.
3,000
We’ve installed over 3,000 slow-drain water butts on the Isle of Wight so far.
43
Across our region, we've installed rain garden planters at 43 schools, with another 50 planned.
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