Thames Water is replacing ageing water mains in Alexandra Park in a major programme of works that is set to run until January 2029.
The water supplier is undertaking a large-scale mains replacement programme in the north London park, replacing old pipes in a bid to improve network reliability and protect the water supply for local residents and businesses from potential bursts and interruptions.
The project is part of Thames Water’s most significant network upgrade in 150 years. Work is being carried out on local roads, including Etheldene Avenue, Park Road, and Cranley Gardens, and involves the installation of new, more durable plastic pipes. The company is also using advanced pipe relining technology to reinforce and modernise the infrastructure.
The local homes and businesses in Alexandra Park, home to the iconic Alexandra Palace, are expected to benefit from a more robust and efficient water supply.
A Thames Water spokesperson said: “We’re upgrading our network to ensure we can meet future demand.”
“Replacing older mains in Alexandra Park will reduce leakage, improve performance, and provide a more resilient supply for customers across the area.”
“Our work will be carefully phased to minimise the local impact, with traffic management in place where required and is part of our biggest upgrade in 150 years as we future-proof our customers’ water supply.”
To date, Thames Water has replaced more than 150km of its pipes since April 2025 and is now replacing mains at twice the rate it was two years ago. The company has worked with the local council to ensure that disruption will be kept to a minimum throughout the work, with efforts made to keep noise and vehicle movement to a minimum.
The project is expected to be completed by January 2029. It is anticipated that the work will significantly improve the overall performance of the network and provide a more resilient water supply for residents across the area.
The upgrade comes after burst mains have caused disruption elsewhere in the capital this year, including on Addington Road in Croydon, which was shut both ways after a water main burst.
