Provincial Water Works Auhority Act 1979. Country/Territory Thailand Document type Legislation Date 1979 Source FAO, FAOLEX Subject Water Keyword Institution Waterworks Water supply Geographical area Asia, Asia and the Pacific, East Asian Seas, Indian Ocean, South-Eastern Asia Entry into force notes The Act shall enter into force upon publication in the Official Gazette. Abstract The Act provides for the establishment of the Provincial Water Works Authority (PWA) and defines its powers and functions and internal organization. Full text English