Septic tanks may be factory-built and manufactured from reinforced cement mortar, fibreglass, steel, or plastics such as polyethylene and polypropylene.

Tanks may be installed underground, or above ground.

Below-ground systems are most commonly installed and must:

• resist loads from the surrounding soil and groundwater
• resist hydrostatic uplift (tendency to float)
• prevent surface and groundwater getting in
• have inspection covers that are not accessible to children

be clear of trafficked areas.

An above-ground system may be required if the site is sub-ground rock or has a very high water table. 

Above ground systems must:

• be watertight
• be durable
• be UV resistant
• resist earthquake forces
• have inspection covers that are not accessible to children.

Call us today to see which type of septic tank will meet council requirements.