The site is leased by the Twyford Waterworks Trust and is open on selected days during the year.

[3][4] The buildings on the site date back to various years between 1898 and 1935, and include the original steam powered pumping station and associated boiler house.

There is also a 2 ft (610 mm) gauge industrial railway, including a rope-hauled inclined plane, used to transport materials around the site.

The pitman (which is preserved in the Boiler House) was connected to the crank at the end of the engine and protruded through the archway to operate the well pumps.

Running along the ground in front of the boilers you can see the railway track for the wagons which brought coal to fire them.

The external shape of the building is unusual in that the downside edge of the roof is very close to the ground (because there is no need for windows).

Wagons were pushed on the level sections and a water powered winch was installed to haul them up, and lower them down, the incline to the lime kilns.

Four acres of downland were enclosed for the construction of the Waterworks in 1898 but the buildings required less than half of the land.

Some of the additional space was used to quarry chalk for making lime, some was used to dump waste but about two acres were left, being neither cultivated nor grazed.

As a result the site has unusual and valuable parcels of land including scrub, tall grassland and chalk meadow.