Wondering What Scottish Water is Doing at the Pentland Hills?

10 September 2018
What Scottish Water is Doing at the Pentland Hills

Work Begins on Resilience Project

£20m investment will improve the water supply network to ensure a resilient supply of fresh water.

Work has begun on the installation of seven miles of new pipes to help deliver fresh, clean drinking water to more than 165,000 people in Edinburgh and the Lothians.

The first cut has been at the foot of the Pentland Hills near Balerno.  Already the first few hundred metres of pipe has now been installed. On average around 75 metres of pipe is being laid every day.

The first sections of pipe being laid measure 500mm in width and each weigh one tonne.  The bright blue plastic pipe has a cover on both ends to protect the inside of the pipe and these are only taken off just as the pipes are connected by hand.

Over the coming months a two-way treated water link will be created between Marchbank Water Treatment Works, near Balerno, and Glencorse Water Treatment Works.

Construction is mostly taking placing on private land and being carried out by Scottish Water alliance partner Caledonia Water Alliance.

The construction team has worked hard to overcome a number of challenges in the area including the proximity of parts of the site to overhead power cables. Also, part of the pipe line will go near a military training area and practise trenches which date back to World War One. A watching brief will be in place during work in these areas to ensure any archaeological remains are located and recorded.

Elsewhere a tunnel crossing will also be dug under the A702 Biggar Road near Hillend to avoid major disruption at this busy road when work takes place here next year.

Local schools, businesses and residents as well as community groups are being kept updated on the project. Lorries bringing the pipes to the construction areas are traveling on surrounding roads at quieter times of the day and noise and disruption is being kept to a minimum.

Scottish Water is committed to minimising disruption and will keep residents, businesses, landowners and land users – including hill walkers – notified of where the work is being carried out and any diversions in place.

The £20m investment will improve the water supply network by installing new mains to ensure a more resilient supply of fresh water. This will improve resilience of water supplies in Scotland’s fastest-growing city by allowing customers to be supplied from two different locations if necessary.

The extended network will also have the capacity to link to other existing and future water supplies across parts of the south of Scotland.

Scott Fraser, Scottish Water Regional Corporate Affairs Manager, said: “It is exciting to see the start of this essential project to make the water supply for many of our customers more resilient. As always, we thank everyone impacted by our works for their patience and understanding.”