London Museum of Water & Steam is an independent museum founded in 1975 as the Kew Bridge Steam Museum. It was rebranded in early 2014 following a major investment project.

Situated on the site of the old Kew Bridge Pumping Station in Brentford, near Kew Bridge on the River Thames in West London, England, the Museum is centred on a collection of stationary water pumping steam engines dating from 1820 to 1910. It is the home of the world’s largest collection of working Cornish engines, including the Grand Junction 90 inch, the largest such engine in the world. The site is an anchor point on the European Route of Industrial Heritage (ERIH).

The Museum reopened on 22 March 2014.

The Museum site contains a number of Grade I and Grade II listed buildings. The original engine house, home of the Bull, Boulton & Watt and Maudslay engines, was built in 1837 and is Grade I listed, as is the Great Engine House, housing the 90 inch and 100 inch engines, which was constructed in two parts in 1845 and 1869.

The Boiler House, which now houses the rotative steam engines, was built in 1837, and along with the ancillary buildings and Gatehouse and Boundary Wall, is Grade II listed.

The ancillary buildings, which include a fully working forge and belt driven workshop, are used by a number of independent artists and creatives.

The Museum’s most striking feature is its 200 ft high Victorian standpipe tower. This is not a chimney stack; it houses two systems of vertical pipes through which water was pumped before it entered the mains water supply.

The brick tower, of Italianate design, was constructed in 1867 to replace an earlier open metal lattice structure. It is a Grade I listed building.