Yorkshire Water will begin ground investigations in Knaresborough next week to help reduce storm overflow discharges into the River Nidd.
Work will start on Monday 2nd November on The Parsonage, where five boreholes will be drilled to assess ground conditions and monitor groundwater levels.
The investigations will help Yorkshire Water decide how to reduce discharges from the Waterside 49 combined storm overflow.
Contract partners Ward and Burke will carry out the work, which is expected to take one week. Each borehole will be approximately 150mm wide and five metres deep.
The scheme is one of seven potential storm overflow improvement projects being investigated and planned in Knaresborough, with completion expected by 2030.
Combined storm overflows act as relief valves on sewer networks that carry both wastewater and rainwater. During heavy rainfall, they can release diluted wastewater into rivers to prevent sewage backing up into homes, businesses and streets.
Athif Khan, project manager at Yorkshire Water, said:
"Last year, we saw a 24.5% reduction in discharges from CSOs, which reflects the level of investment we have been making in upgrading our network to bring the frequency and duration down.
"There’s much more to do, and these boreholes are the next step in planning one of seven projects that we’re expecting to complete in Knaresborough.
“We’ll do everything we can to keep disruption to a minimum and thank everyone for their patience and understanding in advance.”
Residents have been informed of any localised disruption, and ecology and tree surveys have already been carried out.
Once the investigations are complete, the boreholes will be filled and the area fully reinstated. The findings will help inform the design of the proposed improvements.
Further ground investigations are planned for the other six potential projects, with residents to be notified in advance.
The work forms part of Yorkshire Water’s £1.5 billion programme to reduce storm overflow discharges across the region between 2025 and 2030.
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