The Monmouth Gas and Water Co. Ltd. was active in Monmouth during the 19th and 20th centuries. The company was owned in the 1930's until nationalisation in the late 1940's, by the Severn Valley Gas Corporation (along with works in Caldicot (Nprn: 415524), Ross-on-Wye and Caerleon).

Reference: Gwent Record Office: Monmouth, Caldicot and Chepstow Gas Companies Records (administrative history), ref: GB 0218 D514.