| The South Essex Waterworks Order 1955. | S.I. 1955/1613. | The whole Order, save so much of section 7 as relates to sections 39 and 40 of the South Essex Waterworks Act 1901 and section 56 of the South Essex Waterworks Act 1921. |
| The South Essex Waterworks Order 1962. | S.I. 1962/882. | Section 4(2). Sections 9 to 11. Section 13 save so far as relating to sections 39 and 40 of the South Essex Waterworks Act 1901 and section 56 of the South Essex Waterworks Act 1921. |
| The South Essex Waterworks (No.2) Order 1962. | S.I. 1962/1978. | The whole Order. |
| The South Essex Waterworks Order 1964. | S.I. 1964/1548. | Section 4 and Schedule 2 so far as relating to sections 74 and 77 of the Third Schedule to the Water Act 1945f1. Sections 8 to 15. |
| The South Essex Waterworks (Borrowing Powers) Order 1966. | S.I. 1966/1544. | The whole Order, save so much of section 5 as relates to sections 39 and 40 of the South Essex Waterworks Act 1901 and section 56 of the South Essex Waterworks Act 1921. |
| The South Essex Waterworks (Borrowing Powers) Order 1967. | S.I. 1967/1260. | The whole Order, save so much of section 5 as relates to sections 39 and 40 of the South Essex Waterworks Act 1901 and section 56 of the South Essex Waterworks Act 1921. |
| The Essex Water Order 1970. | S.I. 1970/786. | Sections 3, 7, 8, 12 to 17, 30 to 33, 42 and 43. |
| The Essex Water (Capital Powers) Order 1974. | S.I. 1974/1203. | The whole Order, save so much of section 7 as relates to sections 39 and 40 of the South Essex Waterworks Act 1901 and section 56 of the South Essex Waterworks Act 1921. |
| The Essex Water (Capital Powers) Order 1981. | S.I. 1981/1514. | The whole Order, save so much of section 7 as relates to sections 39 and 40 of the South Essex Waterworks Act 1901 and section 56 of the South Essex Waterworks Act 1921. |
| The Essex Water Order 1985. | S.I. 1985/60. | Section 3(1). |
| The Essex Water Order 1986. | S.I. 1986/2210. | The whole Order. |