The Cholderton and District Water Company is England's smallest water-supply company, serving an area on the border of Hampshire and Wiltshire in the south of the country. It supplies about 2500 people over an area of around 21km² in the parishes of Cholderton and Bulford in Wiltshire, and Shipton Bellinger, Thruxton, Amport and Quarley in Hampshire.
The water company was established by an Act of Parliament in 1904 by Henry Charles Stephens. It is owned by the Cholderton Estate.
Cholderton and District Water does not provide sewerage services; mains sewage facilities are provided by Southern Water.