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Domestic Wastewater Treatment

Where there is no council sewer, such as in many rural communities, wastewater is generally treated with septic tank systems. However in some situations, like those described in this section, you may choose (or be required) to install an aerated wastewater treatment system, rather than use a traditional septic tank system with a soakhole or soakage trenches. This is to prevent degrading the quality of water in nearby water bodies.

Choosing an Aerated Wastewater Treatment System

What is an aerated wastewater treatment system?

Systems similar to septic tank systems which provide 'on-site' treatment. However they treat wastewater to a much higher standard. They involve pre-treatment and secondary treatment involving aerobic biological processes. Some may also include tertiary treatment such as ultra-violet light disinfection.

What is happening in the Rotorua Lakes catchments?

Concerns about water quality in the Rotorua lakes means that there is a higher performance standard required for wastewater systems installed in the Rotorua Lakes' catchments. Bay of Plenty Regional Council are carrying out trials in Rotorua of aerated wastewater treatment systems to measure how they perform.

The aerated wastewater treatment systems below are approved for new installations throughout the Bay of Plenty, including the Rotorua lake catchments. Performance certificates can be viewed on the WaterNZ website. Detailed performance reports may also be available from the manufacturer.

Model Company
Hynds Advanced Lifestyle Hynds Environmental
Innoflow AdvanTex AX20 Innoflow Technologies
Waipapa Tanks Econo-Treat VBB C-2200-2 Waipapa Tanks and Waste Treatment

Note that for new systems in Rotorua to be installed as a 'permitted activity' they must also meet the requirements of Rule 13 and Schedule 4 of the Bay of Plenty Regional Council's On-Site Effluent Treatment Regional Plan.

If you are unsure if you are in one of the Rotorua Lakes catchments select 'Map 4' of the On-site Effluent Treatment Regional Plan.

Yes, I am in a Rotorua Lake catchment

No, I am elsewhere in the Bay of Plenty

If you require further assistance after following these links contact Bay of Plenty Regional Council on the details below.

Read more about on-site effluent treatment systems (OSET).