Water
Designing homes to use water efficiently, reduce costs and cope with more frequent droughts or storms.
Statutory requirements
An on-site wastewater treatment system must meet performance requirements for construction and operation of NZ Building Code. If the system is designed to AS/NZS 1547 On-site domestic-wastewater management, the requirements of the Code will be met.
Local authorities or regional councils may have additional bylaws controlling the installation of on-site wastewater treatment systems. The local authority should be contacted before you begin to design a system.
The sanitary plumbing connected to an on-site wastewater treatment system within the house must comply with the requirements of NZBC clause G13 Foul water.
Septic tank construction is covered by AS/NZS 1546.1 On-site domestic wastewater treatment units – Septic Tanks.