C Station, With Associated Valve House, Abbey Mills Pumping Station

The C Station, along with its associated valve house, is a pumping station built between 1910 and 1914, designed by engineer George W. Humphreys for the London County Council. The pumping station is constructed from white stock brick, featuring terracotta and moulded stone dressings, and has a slate roof topped with a long lantern along the ridge. It is a long, low single-storey structure with round-headed windows that have hood moulds, displaying a subtle Gothic influence reminiscent of the A and B pumping stations. The main elevation has 19 bays arranged in a pattern of 3:4:5:4:3, with the ends and centre slightly projecting under gables, a central entrance, and outer relieving arches. The opposite elevation mirrors this design but has four bays at the centre. The gabled five-bay returns also feature central entrances. Inside, the pumping floor is situated deep below ground level, and the original pumping machinery is reported to have been replaced.

The valve house associated with the pumping station is similarly built from white stock brick with terracotta and moulded stone dressings, and it has a flat roof. This small L-shaped single-storey block sits on a tall raised plinth and includes round-headed windows with hood moulds.

C Station was constructed as part of a long-term improvement initiative that began in 1891, aimed at increasing the capacity for managing north London's sewage at Abbey Mills. This area was the most impressive segment of a vast sewerage project undertaken by Sir Joseph Bazalgette for the Metropolitan Board of Works in the 1860s. The completion of new sewers made the establishment of C Station essential, particularly for managing storm water.

The 1910-14 pumping station at Abbey Mills is noted for its understated architectural quality and is an important component of the historic group of structures at Abbey Mills. It holds visual group value and represents the early expansion of the complex to accommodate London's growing population.