Vyrnwy water pipe works
As part of our continuing investment, we are undertaking a fourteen year cleaning and maintenance programme
of our water network, providing even greater improvements to the
quality of our drinking water. We are targeting our largest and most
important water mains which between them supply drinking water to over
five million customers every day.
The Vyrnwy Large Diameter Trunk Main (LDTM)
consists of three parallel pipelines with a total length of around
240km. These large mains carry up to 210 million litres of water a day
to 900,000 people in Cheshire and Merseyside. Lake Vyrnwy provides the
source for the water which is then transported along the pipelines
from Oswestry water treatment works in Shropshire to Prescot water
treatment works near Liverpool.
The oldest of the three pipelines were installed in the 1880's and
are made of cast iron, whilst the remaining pipeline was installed in
the 1930's and is constructed from steel. The pipes vary in size
between 39" to 42" in diameter and over time deposits of iron which
occur naturally in raw water have built up on the inside. Although not
harmful to health, these deposits can result in discolouration of the
water supply.
The Vyrnwy cleaning and refurbishment project will utilise a variety
of methods to refurbish these large pipes, the project will be completed
in phases over the next 9 years. We have already completed cleaning
28.5km of the Vyrnwy line 3 pipeline between Oswestry and Malpas
utilising specialised pressure jetting equipment.
Find out more information:
If you need any further information, please call 0845 213 0208 and quote project number 90020300. We will be happy to help.
Email this page