He suggested collecting subterranean water by building underground mud barriers .
In 1890 , Osbert Chadwick , consulting engineer of the Crown Agents , proposed the building plan for a water supply system in Kowloon .
Osbert Chadwick suggested collecting subterranean water by building underground mud barriers .
In 1890 , Osbert Chadwick , consulting engineer of the Crown Agents , proposed the building plan for a water supply system in Kowloon .