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 working engine in the world. The site is an anchor point on the European Route of Industrial Heritage (ERIH).

London Museum of Water & Steam

The museum reopened on 22 March 2014.

London Museum of Water & Steam

History

Kew Bridge Pumping Station was originally opened in 1838 by the Grand Junction Waterworks Company, following a decision to close an earlier pumping station at Chelsea due to poor water quality. In the years up to 1944 the site expanded, ultimately housing six steam pumping engines as well as four Allen diesel pumps and four electric pump sets. The steam engines were retired from service in 1944, although two were kept on standby until 1958, when a demonstration run of the Harvey & Co. 100 inch engine marked the final time steam power would pump drinking water at the site.

London Museum of Water & Steam

The Metropolitan Water Board decided not to scrap the resident steam pumping engines and set them aside to form the basis of a museum display at a later date. This action bore fruit in 1974 with the formation of the Kew Bridge Engines Trust, a registered charity, by a group of volunteers previously involved in the restoration of the Crofton Pumping Station.

Today the site is an internationally recognised museum of working steam pumping engines, a reminder of the many pumping stations spread throughout London and the UK. In 1999, the United Kingdom government Department for Culture, Media and Sport described Kew Bridge as "the most important historic site of the water supply industry in Britain".

The Kew Bridge Engine Trust and Water Supply Museum Limited, a registered charity, has three aims: to restore (and maintain) the five historic beam engines at the Kew Bridge site to add other important water pumping engines to establish a museum of London's water supply.

In 1997 the museum was awarded an Engineering Heritage Award by the American Society of Mechanical Engineers (ASME) and Britain's Institute of Mechanical Engineers (IMechE). A second IMechE Engineering Hallmark was awarded in 2008 for the restoration of the Bull engine, making the museum one of only 12 sites to achieve more than one of these awards.

Engines

The museum houses the world's largest collection of Cornish cycle beam engines, including the largest working beam engine, the Grand Junction 90 inch, which has a cylinder diameter of 90 inches and was used to pump water to London for 98 years. This machine is over 40 feet high and weighs about 250 tons. It was described by Charles Dickens as "a monster".

The museum also has several other working Cornish cycle beam engines, and other working steam engines, as well as a three-cylinder Allen diesel engine which is also on public display and frequently run.

A complete list of the pumping engines at the museum is as follows: Sandys, Carne and Vivyan (Copperhouse Foundry) 90 inch Harvey & Co. 100 inch Bull engine Maudslay engine Boulton & Watt (or West Cornish engine) James Simpson & Co. (or Waddon engine) Easton and Amos engine Hathorn Davey & Co. triple expansion engine James Kay, (or Dancer's End engine) Allen diesel engine Hindley waterwheel

The museum also operates an 1860 Shand Mason Fire Engine on selected event days.

Railway

The museum runs a narrow-gauge railway which in 2009 saw the introduction of a new-build Wren Class steam locomotive, named for the engineer Thomas Wicksteed. The railway had previously been operated by visiting loan locomotives. The line runs for 400 yards around the Kew Bridge site, and passenger trains are operated at weekends and on other special event days.

Although not an original feature of the waterworks at Kew Bridge, the railway was inspired by similar facilities provided at major waterworks in the UK, notably the Metropolitan Water Board Railway that originally ran between Hampton and the Kempton Park waterworks. A small part of that railway is now operated as the Kempton Steam Railway, comprising the only other site in London where rides can be taken on steam trains of such a large size; it has benefitted from some very generous assistance, in its restoration, from the London Museum of Water & Steam.