Two 120-metres deep bore holes to be drilled to provide drinking water for East Devon

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Two bore holes are to be drilled 120 meters down into the East Devon rock to provide a fresh supply of drinking water for the area.

The £730,000 project will provide water for 8,000 customers.

South West Water is installing the boreholes at Sidford Water Pumping Station to replace a borehole in the Otter Valley which is now over 100 years old.

Work will start on the smaller of the two boreholes, which will act as a monitoring point for the main borehole, on Monday, January 23, 2017.

Drilling the borehole will take about a week, followed by a three-week period of testing. Construction of the main borehole will start on or around February 23 and take about eight weeks.

Chris Rockey, Head of Drinking Water Quality, said: “Delivering a clean, safe and reliable supply of drinking water to our customers is our top priority and the two new boreholes represent a £730,000 investment in East Devon.”

A 14-metre drilling rig will be used during construction. The monitoring borehole will be about 120 metres deep with an internal diameter of 15cm. The main borehole will also be about 120 metres deep but with an internal diameter of 30cm.

Chris added: “All the work is taking place within the boundary of the pumping station site. We have written to our neighbours and we will do our best to minimise any impact during the construction work.

“Once the borehole is operational, water from it will be treated with ultraviolet disinfection on site and supplied to customers on the coast of East Devon via the existing water pumping station.”

South West Water operates 32 boreholes across the region, most of which are in East Devon. The last borehole was drilled in 2011 but before that it was the early 1990s.

The new borehole will supply around two million litres (megalitres) of water a day, enough to supply 8,000 customers in the coastal towns east of Sidmouth.

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