The following table gives the expenditure by local authorities on the construction and maintenance of sewage and drainage works over the period 1959 to 1964 compared with total expenditure for all works.
| Year | Total Annual Expenditure on All Works | Annual Expenditure on Sewage and Drainage | Percentage of Total on Sewage and Drainage |
| £ | £ | Per Cent | |
| 1959–60 | 66,197,345 | 9,321,075 | 14.0 |
| 1960–61 | 68,819,859 | 9,309,001 | 13.8 |
| 1961–62 | 75,876,809 | 9,659,133 | 12.8 |
| 1962–63 | 79,327,917 | 10,291,661 | 13.0 |
| 1963–64 | 74,578,179 | 3,599,579 | .. |
These figures were abstracted from the Local Authority Statistics published by the Department of Statistics. NOTE—Total expenditure on all works excludes that by special-purpose authorities apart from urban drainage authorities.
by Denis Anderson Ferrier, B.E.(HONS.), B.SC.(N.Z.), D.I.C. Civil Engineering Division, Ministry of Works, Wellington.
Co-creator
Denis Anderson Ferrier, B.E.(HONS.), B.SC.(N.Z.), D.I.C. Civil Engineering Division, Ministry of Works, Wellington.