On-site sewerage facilities

An on-site sewerage facility (OSF) is any system that stores, treats and disposes of household wastewater and sewage on a property in an unsewered area. Poorly sited or maintained on-site sewerage treatment facilities can impact public health and the environment. 

Prior to installing an on-site sewerage facility approval must be obtained from Brisbane City Council and all on-site sewage treatment plants must have obtained chief executive approval. Septic systems do not require chief executive approval.

The types of facilities that may be installed are:

  • septic tank
  • secondary or higher treatment plant (aerobic wastewater treatment systems)
  • composting toilet

A list of the approved treatment systems is available from the Queensland Government website.

Maintenance and monitoring

It is the property owner’s responsibility to ensure their on-site sewerage facility is maintained and operates in accordance with the manufacturer’s requirements and any conditions set by Brisbane City Council in the Compliance Permit and/or Compliance Certificate.

Council recommends that septic tanks are pumped out every 3-5 years to ensure they continue to operate effectively.

Treatment plant service contractors are required to provide Council and the property owner with the results of all servicing of treatment plants. Council will contact property owners and service contractors if a service report has not been received within the usual service intervals.

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Fees and charges

See the full list of plumbing and drainage fees and charges.

More information

Find out more about plumbing and drainage by phoning Council on 07 3403 8888 for residential customers, or 133 BNE (133 263) for business customers, 24 hours a day, 7 days a week.

16 January 2018