| The Bristol Waterworks Order 1920. | Confirmed by 1920 c.cvi. | Section 14. |
| The Bristol Waterworks Order 1929. | Confirmed by 1929 c.xxxiii. | Sections 15 and 16. |
| The Bristol Waterworks Order 1947. | S.I. 1947/1149. | Section 4 so far as relating to sections 74 to 78 of the Third Schedule to the Water Act 1945f1. |
| The Bristol Waterworks Order 1951. | S.I. 1951/2292. | Sections 2 and 6 to 12. |
| The Bristol Waterworks (Clevedon) Order 1952. | S.I. 1952/2274. | Sections 2, 5, 6, 8, 9, 11, 12 and 15 to 21. |
| The Bristol Waterworks Order 1954. | S.I. 1954/795. | Sections 2, 5, 8 and 9. |
| The Bristol Waterworks Order 1956. | S.I. 1956/1262. | The whole Order. |
| The Bristol Waterworks (Shepton Mallet) Order 1958. | S.I. 1958/2263. | Sections 2, 5 and 7 to 13. |
| The Bristol Waterworks (West Gloucestershire) Order 1959. | S.I. 1959/999. | Sections 2, 7 and 9 to 15. |
| The Bristol Waterworks (Weston-super-Mare) Order 1960. | S.I. 1960/1778. | Section 4. |
| The Bristol Waterworks (Frome Rural) Order 1962. | S.I. 1962/528. | Sections 2, 5 and 8. |
| The Bristol Waterworks Order 1964. | S.I. 1964/1062. | The whole Order. |
| The Bristol Waterworks (Downside Abbey) Order 1965. | S.I. 1965/1771. | Sections 3, 5, 7, 9 and 15. |
| The Bristol Waterworks Order 1966. | S.I. 1966/1372. | The whole Order. |
| The Bristol Waterworks (Sodbury) Order 1967. | S.I. 1967/463. | In section 3, subsections (1) and (2). Sections 5, 6 and 9. |
| The Bristol Waterworks Order 1970. | S.I. 1970/643. | Sections 4 and 5. |
| The Bristol Waterworks Order 1971. | S.I. 1971/1053. | The whole Order. |
| The Bristol Waterworks Order 1974. | S.I. 1974/1750. | The whole Order. |
| The Bristol Waterworks Order 1978. | S.I. 1978/1249. | The whole Order. |
| The Bristol Waterworks Order 1979. | S.I. 1979/1168. | The whole Order. |
| The Bristol Waterworks Order 1987. | S.I. 1987/842. | The whole Order. |