Greywater diversion devices are not accredited by NSW Health.

A gravity diversion device incorporates a hand activated valve, switch or tap and is fitted to the outlet of the waste pipe of the plumbing fixture such as a laundry tub.  Greywater is diverted directly to a sub-surface irrigation system in the garden.

A pump diversion device incorporates a surge tank to cope with sudden influxes of greywater for distribution of the greywater directly to a sub-surface irrigation system in the garden.  The surge tank does not operate as a storage tank.

Approval from the local council to install and operate a diversion device may not be required under Section 75A of the Local Government (General) Regulation 2021, if the installation and operation meet certain conditions.

Greywater diversion devices are evaluated to the Water Mark Technical Specification WTS 460-2016 by Conformance Assessment Bodies. Certification to the technical specification for plumbing and drainage products is obtained by way of a WaterMark licence.