Preserving water quality using an innovative technique called ‘ice pigging’ to clean our water pipes…

See a map detailing our planned programme of work here

Some of our customers in parts of Wrexham have occasionally experienced discoloured water which is caused by the build-up of mineral deposits (essentially manganese) occurring naturally within the raw water in this area which deposits a sediment and accumulates within our water mains network over time.  These deposits are harmless as this is a naturally occurring mineral but we do have a programme of works to address this problem.

As part of our ongoing investment programme of cleaning our pipes and upgrading our treatment works to remove the mineral more effectively at source, we will also be carrying out an ‘ice-pigging’ project.  This technique is both effective and environmentally friendly using a slurry of ice to remove any sediment that has accumulated in the pipes over many years.  The process will be carried out at night to minimise the impact on water supplies, local residents and road users.

The actual cleaning project will commence on 3 April over a seven week period and will be carried out in three phases (these timescales may be subject to change dependent on any operational issues that may arise during the works):







 Phase 1


Higher Berse








3 April through to

12 April 2017

 Phase 2


Cross Lanes

Parts of Wrexham IE

Bangor on Dee



21 April through to

27 April 2017

 Phase 3




Cuckoo’s Nest


Chester Business Park


3 May through to

11 May 2017

The operation is divided into sections and we will provide advance notification in writing of the work affecting your supply. We will do this at least 48 hours before the work is due to start.

Following the cleaning work we will ensure the system is fully restored to the normal pressure and quality you expect.

Due to the size of the apparatus used in these works and to ensure the safety of both our workforce and that of the general public, there will be some traffic management including traffic lights and some road closures but please be assured that we will do our utmost to keep any disruptions to an absolute minimum.

Should you have any queries or questions regarding these works or require further information, please contact our Customer Support Team during office hours (8am – 6pm weekdays) on 01978 833200 or out of hours it’s our Control Room on 01978 846946.