Water Turbine House, Sutton Poyntz Pumping Station

The building comprises a water turbine house and an attached coal store, forming part of a former water pumping station, now partly a company museum. It was constructed in two phases between 1856 and 1857, with a later addition in 1869, designed by Thomas Hawksley for the Weymouth Waterworks Company.

The structure is built from cut and squared Portland stone with ashlar dressings, covered by a hipped slate roof, and features a red brick chimney. The attached coal store is of matching materials and has a monopitch roof, hipped at the front.

The building is arranged in a T-shaped plan, with a rectangular turbine house built in two phases, and a coal store attached to the east.

The south-facing principal elevation of the turbine house features a central round-arched entrance with timber panelled doors and a fanlight above. The left return displays two sash windows with ashlar lintels and sills, and a similar window is located at the rear. The coal store has timber double doors on its front (south) elevation.

Inside, the turbine house is divided into two rooms, each originally housing a turbine pump. Both rooms contain corner fireplaces with simple surrounds, a stone-flagged floor, and coving. The front room (south) now houses a 1928 triplex ram pump brought in from another location for display. The room beyond retains a turbine-driven ram pump manufactured in 1857 by D Cook & Co. of Glasgow. Above the turbine chamber is a cast-iron frame with bevelled gear wheels; the initial wooden teeth of these wheels were later replaced with cast-iron. The frame is topped by a meter or counter added in 1858 to record abstraction rates. The interior of the coal store was not inspected in 2014.

Note that the 1928 ram pump, being an addition from elsewhere, is specifically excluded from group value context.

A wheelpit dating from the late 18th century, belonging to an earlier watermill, remains at the north-east corner of the turbine house.