Maintaining Systems
  • Last updated:
  • 14 Mar 2017

Regular maintenance of your on-site sewerage facility will help ensure that it is working effectively. It can save expensive repairs in the future. It is important to ensure:

  • faulty mechanical and electrical components are repaired or replaced as soon as an issue is identified
  • any anti-bacterial cleaning products do not find their way into the system. They can harm the biological processes used by your facility.

The following points provide guidelines for maintaining different types of systems.

Maintaining trenches systems

  • check the septic tank or primary chamber sludge and scum levels every year. This ensures solids are not being carried over to the trenches
  • clean the primary chamber outlet filter every year
  • have the septic tank or primary chamber pumped out on a regular basis by a licensed contractor. Depending on the system load, every 3-5 years
  • ensure the LAA is maintained in good condition and not overgrown
  • plant thoughtfully. Keep shade plants and plants with large root systems well away from the LAA
  • top dress trenches with a good quality soil (not clay) to ensure they are level. Be sure to fill any depressions and low points in the area.

Maintaining surface irrigation systems

  • the treatment plant must be serviced on a regular basis. This ensures the water provided to the sprinklers is of a quality suitable for irrigation
  • move or rotate the sprinklers on a regular basis
  • ensure sprinklers are operating within the designated LAA
  • clean any filters on a regular basis
  • improve the top layer of soil by digging in gypsum an organic mulch, if required.

Maintaining sub surface irrigation systems

  • the treatment plant must be serviced on a regular basis. This ensures the water provided to the sprinklers is of a quality suitable for irrigation and is chlorinated. An effluent low in suspended solids is required to prevent the drippers from becoming blocked
  • flush the small bore piping to remove any solids at least every 12 months
  • clean any filters on a regular basis
  • improve the top layer of soil by digging in gypsum an organic mulch, if required.

For a comprehensive guide to maintaining systems, refer to council's: