In 1857 two small holding reservoirs were built in

Prescot Prescot is a town and civil parish within the Metropolitan Borough of Knowsley in Merseyside, England. It lies about to the east of Liverpool city centre. At the 2001 Census, the civil parish population was 11,184 (5,265 males, 5,919 femal ...

to receive water from the Rivington reservoirs. These held sufficient water to supply

Liverpool Liverpool is a port City status in the United Kingdom, city and metropolitan borough in Merseyside, England. It is situated on the eastern side of the River Mersey, Mersey Estuary, near the Irish Sea, north-west of London. With a population ...

for two days. In 1892 water from

Lake Vyrnwy Lake Vyrnwy (, or ') is a reservoir in Powys, Wales, built in the 1880s for Liverpool Corporation Waterworks to supply Liverpool with fresh water. It flooded the head of the River Vyrnwy, Vyrnwy () valley and submerged the village of Llanwddyn ...

supplemented the water stored in Prescot. Four smaller reservoirs were built with a capacity of 200 million gallons, sufficient to supply Liverpool for four days. Today, so much water is abstracted from Rivington for use in Lancashire that the flow is reversed and water from Vyrnwy is used to supply towns in Lancashire.

References

Source: Moore, Jim. ''Underground Liverpool''. The Bluecoat Press 1998. {{authority control Drinking water reservoirs in England Buildings and structures in Merseyside Reservoirs in Merseyside Prescot