Thomas Hawksley was an English civil engineer of the 19th century, particularly associated with early water supply and coal gas engineering projects. Hawksley was, with John Frederick Bateman, the leading British water engineer of the nineteenth century and was personally responsible for upwards of 150 water-supply schemes, in the British Isles and overseas.

John Frederick La Trobe Bateman was an English civil engineer whose work formed the basis of the modern United Kingdom water supply industry. For more than 50 years from 1835 he designed and constructed reservoirs and waterworks. His largest project was the Longdendale Chain system that has supplied Manchester with much of its water since the 19th century. The construction of what was in its day the largest chain of reservoirs in the world began in 1848 and was completed in 1877. Bateman became "the greatest dam-builder of his generation".