| Alexandra Sewerage Treatment Plant | 1959 | General arrangement of primary treatment plant. Job No. 159795, sheets 1-19 | 19 | Hanger 46 |
| Alexandra Sewerage Treatment Works 2nd Stage | 1962-1963 | Job No.4290, sheets 1-8, step and path detail and compact tank arrangement | 10 | Hanger 46 |
| Lands and Survey Subdivision Ashworth Street - Drainage | 1968 | H.D.D 3431, sheet 1 of 3, foul sewer layout | 1 | Hanger 47 |
| Trunk sanitary sewer - Petersons subdivision - Bridge Hill | 1977 | Job No. 8488, sheet 1. Sheet is held with specification document in main archive room. | 1 | TBA |
| D/1 | 1963-1979 | Drainage, foul sewer, septic tanks | ABC5/FG2 |
| Plan of subdivisions and sewerage | 1976-1979 | Description of sheets in order: Plans of subdivision and sewerage, sheet A539. Subdivision layouts D4 and E4. Subdivision layout B4. 1956 plan of proposed new sewer outlet into the Manuherikia River. Extension to trunk services sewerage reticulation job no. 8693, sheet 6. Proposed sewerage disposal Ross subdivision, job no. 8373. Plan of typical drainage details | 7 | Hanger 45 |
| Wastewater Treatment Scheme Treatment Works | 1987 | Job No. 53935, site layout plan and sheets 2-9. Plans are stamped 'Preliminary' but this plan went ahead | 9 | Hanger 50 |
