Water supply

Bringing great drinking water to customers in the North West.


Of the 2,000 million litres of water we supply to our customers every day, well over half is from Cumbria and Wales.


We gather our water from reservoirs in the Pennines and the Lake District,  from Lake Vyrnwy in Wales for customers in Merseyside and Cheshire and from the River Dee, from boreholes and streams.


Our two biggest reservoirs are Cumbria’s Thirlmere and Haweswater. Haweswater holds more than 8,450 million litres of water - equivalent to around 33,800 Olympic swimming pools. We own and manage over 56,000 hectares of land (the equivalent of 70,000 football pitches). The majority of this land surrounds our reservoirs.


More than 1,400 kilometres of aqueducts transports raw water to one of our 100 water treatment works throughout the North West. Our longest aqueduct Thirlmere at 160 kilometres, designed by the Victorians to take water from the Lake District to Manchester.


Once we have collected the raw water we clean it and treat it at one of our 96 water treatment works and distribute via our network of supply pipes to our customers across the North West.


Our network mixes fantastic pieces of engineering from our Victorian ancestors which still work well to this day and new multi million pound pipelines using the latest engineering techniques.