Yorkshire Water is investing a total of £10.3 million in three separate storm overflow projects in Rotherham to protect the river Don.
In the S61 area of Rotherham, the water company is investing £4.3 million in a major project as part of its commitment to reduce storm overflow discharges and improve the health of local waterways.
Contract partners, Ward & Burke, are underway with work at Scrooby Street combined sewer overflow (CSO), Greasbrough, where Yorkshire Water is constructing a new 1,550m³ storm attenuation tank.
This will provide additional capacity within the sewer network during periods of intense rainfall, helping to reduce storm overflow discharges into Greasbrough Dike and ultimately the River Don.
The scheme will take up to 14 months to complete and is expected to result in an 85% reduction of storm discharges from Scrooby Street’s CSO from around 62 to fewer than 10.
Vikki Overend, project manager at Yorkshire Water, said:
“This scheme is part of our wider £73.5 million programme of improvements across Rotherham's sewer network.
“The project is among 27 schemes planned across the area over the next five years. We're continuing to invest in our infrastructure across Rotherham to help reduce storm overflow discharges and improve the health of local rivers and watercourses."
The project will add significant additional storage in the utility’s network, reducing the number of spills following periods of heavy rainfall.
Separately, Yorkshire Water is investing £6 million in two adjacent Rotherham based projects to help improve water quality in the river Don.
Construction partner, MGroup, is due to start a £4.75 million scheme at Clifton Park combined sewer overflow (CSO), to reduce storm overflow discharges into the river Don.
The project will see the construction of a new 345m³ underground storage tank in a field beneath Clifton Park. The tank will store 345,000 litres of excess wastewater during periods of heavy rainfall, before returning it back into waterways once it has been treated.
On completion, the upgrade is expected to reduce annual storm overflow discharges from Clifton Park CSO by around 72%, cutting the annual average from 37 to fewer than 10 per year.
A further £1.25 million project to separate surface water from the wastewater network is planned at nearby Herringthorpe Playing Fields, helping to reduce the amount of rainfall entering and overloading the sewer system.
The investments forms part of Yorkshire Water's wider programme to improve river health across the region and are among 27 storm overflow reduction projects planned across Rotherham before April 2030, representing a combined investment of £73.5 million.
Vikki Overend, project manager at Yorkshire Water, said:
“We know that reducing storm discharges and maintaining healthy waterways are important to our local communities which is why we're continuing to invest in projects that reduce storm overflow discharges and improve the resilience of our wastewater network.
"This investment at Clifton Park will help us capture and store excess flows during heavy rainfall, significantly reducing the use of the storm overflow and supporting our efforts to improve the health of the river Don. It is one of a number of a projects we're delivering across Rotherham such as Treeton Mill Lane and Clifton Lord Street.”
The project is expected to take around 18 months to complete.
Yorkshire Water is investing £1.5 billion to improve storm overflows and reduce the need for storm overflows to operate by building new:
- Surface water sewers, to separate surface water and wastewater so that wastewater networks aren’t impacted by bad weather
- Underground storage tanks, to build additional capacity into the network
- Nature-based solutions, to build additional capacity into the network
- Sustainable drainage systems, to slow the flow of surface water into the combined network
The storm overflow projects are part of Yorkshire Water’s £8.3 billion AMP8 Investment to improve infrastructure, services and the environment across the region over the next five years.
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