A large number of properties in the Ipswich area are not connected to a reticulated sewerage system. The treatment and disposal of all wastewater generated on these properties must be undertaken by an on-site sewerage facility.
An on-site sewerage facility is any system that stores, treats and disposes of household wastewater on the property. Poorly sited or maintained on-site sewerage facilities can impact public health and the environment. The owner of the facility is responsible for ensuring the system is maintained and functioning properly.
The disposal of effluent (treated sewage) may occur:
A common effluent drainage system is where two or more premises have their wastewater combined (usually after primary treatment) and transported to a common land application area independent of premises where the wastewater was generated. Such systems over 20 equivalent persons would also require approval and further monitoring from the Department of Environment and Heritage Protection.
Treatment systems for household wastewater include:
Conventional domestic sewage treatment plants (secondary treatment or better)
Septic tanks (primary treatment)
Although council approves the installation of an on-site sewerage facility, the treatment system will require product approval from a State Government Department.
Greywater is waste water generated from baths, showers, washbasins and laundries which can be diverted for use on lawns and gardens. Kitchen greywater is excluded from being used in sewered areas as it is not suitable. Grease and oil from the kitchen sink can clog the plumbing in your home. In unsewered areas kitchen water should be first put through a grease trap.
Greywater can be diverted from laundries and bathrooms by:
Care should be taken if reusing greywater because of its:
Council approval for greywater diversion and treatment systems
You will need a council permit before installing either:
Information for plumbers
The greywater guidelines for plumbers on the Department of Housing and Public Works website can help plumbers assess whether the home owner has suitable and sufficient land to distribute greywater.