| The Borough of Portsmouth Water Order 1898. | Confirmed by 1898 c.cciii. | Section 4 so far as relating to the application and incorporation of the 1845 Act and the 1863 Act. |
| | Sections 8 to 11, 16 to 18, 20 and 21. |
| The Borough of Portsmouth Water Order 1902. | Confirmed by 1902 c.clxxxix. | Section 4 so far as relating to the application and incorporation of the 1845 Act and the 1863 Act. |
| | Sections 7 to 10, 15 to 17 and 19 to 22. |
| The Portsmouth Water Order 1953. | S.I. 1953/1228. | Section 2 so far as relating to the application and incorporation of the 1845 Act and the 1863 Act. |
| | Section 7. |
| The Portsmouth & Gosport Water Order 1955. | S.I. 1955/435. | Section 2 so far as relating to the application and incorporation of the 1845 Act and the 1863 Act. |
| | Sections 4 to 12, 14(1), 17 and 18. |
| The Portsmouth & Gosport Water Order 1959. | S.I. 1959/1594. | Sections 4(1), 15 and 19 to 22. |
| | Schedules 1 to 3. |
| The Portsmouth & Gosport Water Order 1962. | S.I. 1962/778. | Sections 4(2) and 13. |
| The Portsmouth & Gosport Water (Regnum Area) Order 1963. | S.I. 1963/1333. | Sections 10, 16, 19, 28, 32, 34 and 35. |
| The Portsmouth Water Order 1964. | S.I. 1964/790. | Sections 12 and 13. |
| The Portsmouth Water Order 1966. | S.I. 1966/1044. | In section 3, subsections (1), (2) and (4), and sections 4 to 5. |
| The Portsmouth (River Itchen) Water Order 1970. | S.I. 1970/1621. | Section 12. |
| The Portsmouth Water (Financial Provisions) Order 1971. | S.I. 1971/363. | Sections 3 and 4. |
| The Portsmouth Water Order 1979. | S.I. 1979/1528. | The whole Order. |
| The Portsmouth Water Order 1986. | S.I. 1986/1532. | The whole Order. |