Guernsey water safeguarding St Saviour’s Reservoir water with installation of bypass main pipe

September 21st, 2011 by Guernsey Water

Guernsey Water is installing a bypass main pipe on the bed of the St Saviour’s reservoir.

This project, which is due to begin on 12 October 2011 and will run until mid February 2012, was conceived as a result of an Island-wide risk assessment of the water infrastructure, which demonstrated the need for a pipe to divert streamflow away from the reservoir in the event of the incoming raw water not being of the usual high quality.

The pipe will be installed by contractors Geomarine Ltd, and will require the use of a diving team in order to lay the pipe on the reservoir bed.

Director of water services Andrew Redhead said: “The installation of this bypass main is important as it gives us flexibility with the streamflow that enters the reservoir. Improving the reliable quality of the raw water will ultimately lead to better quality treated water for our customers.”

Guernsey Water asks Millennium Walk users to note that the reservoir’s east car park will be closed off while the works are taking place, so visitors will need to use either the south or west car-parks. The dam walkway between the east car park and the draw off tower will also be closed to the public, as will sections of the walk. Depending on circumstances it may be necessary to reduce the water level at the reservoir by up to two metres to facilitate the work.

(click on map to expand - map courtesy of Guernsey Water)

Mr Redhead added: “We are aware of the ecological importance of the area, and we will of course attempt to minimise any disruption wherever possible. We will be working closely with Environment Guernsey, who are the wardens of the Millennium Walk, to ensure that this happens. We apologise for any inconvenience caused to the public and fishermen during these important works.”


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