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Sewerage Management

BW-Brooklyn-005

Some parts of Hornsby Shire do not have sewerage services. In unsewered areas property owners are responsible for choosing an appropriate method for the onsite treatment and disposal of household wastewater.

On Site General (368 kb) - are used on properties with no access to sewer mains for the treatment and disposal of wastewater generated within the household.

The four most common types are:

Septic Tank (365 kb) - Wastewater passes through a septic tank and is gravity fed or pumped to sub surface trenches.
AWTS (386 kb) - Wastewater is aerated and disinfected before irrigated onto gardens and lawns.
Compost Toilet (331 kb) - Generally, all solids are removed from the wastewater stream and are transformed into compost by micro-organisms.
Pumpout (376 kb) - Wastewater passes through a septic tank into a holding well and is collected by a tanker on a regular basis.

BW - Septic Diagram2 Approval to Install

All owners wishing to upgrade their existing onsite sewage management system or install a new onsite sewage management system are required to apply to Council for an Approval to Install a Wastewater Treatment System. A copy of the Approval to Install is available by clicking:

Approval to Install Wastewater Treatment System - FORM 18 (85 kb)

Septic Tank and Absorption Trenches

Approval to Operate
All owners of sewage management systems are required to apply to council for an Approval to Operate. This Approval helps council monitor and manage the cumulative impact of sewage pollution in local areas. The Approval also ensures that property owners are aware of their responsibility to efficiently operate and regularly maintain their system.

Approval to Operate a Sewerage Management System (24 kb)

Further Information
General information on onsite sewerage management can be obtained from :

Council�s Environmental Sustainability & Health Team on (02) 9847 6829
NSW Health

Last Updated 30 April 2008