Information about approved on site effluent systems.

Primary Treatment Systems

Manufacturer Model NZS 1546.1 Compliant Comment
Dart 5800 Dual Unknown  
Devan 3600 Yes 3200 litre capacity
Devan 5700 Yes 5250 litre capacity
Hynds 4500 Unknown  
NaturalFlow NF8000 Yes Vermifiltration
Oasis Clearwater Z54  Unknown 4800 litre capacity

Septic Tank Outlet Filters

Type 1 Type 2
Disc Dam Filter
Zabel A100 - 8x12
Screen Type Filters
Bioceptor Model 316-3
Biotube FT 0444-36M
Zabel A1800
Zoeller "WW" Residential Effluent Filter
Polylok PL122

Land application area

Primary treated wastewater can be discharged into trenches, beds or mounds. Here are some guidelines with details.

Aerated wastewater systems

For anywhere in the region except Rotorua catchments

These systems can be installed anywhere in the Bay of Plenty Region with the exception of properties within the Rotorua lakes’ catchments

Manufacturer Model Performance Structural Compliance Comment
Allflow Equipment Ltd  Allflow Klaro 9000 10PE  √   Unknown  
Aqua Nova NZ Ltd Aqua Nova 10EP  √  Unknown  
Biolytix Biopod BF6  Yes Max 1600 litres per day 
Biolytix MultiPod Yes Max 2000 litres per day
Devan Integra S15 √  Yes Max 1500 litres per day  
Ecocycle Fusion  √  Waiting on further info  
Ecological Technologies Biorock -S √   Unknown  
Hydrozone Pureflow √  Unknown

Max 1400 litres per day

Hynds Lifestyle 2 √  Unknown


Innoflow Advantex AX-20 Yes


Oasis Clearwater  S2000L √  Waiting on further info  
GRAF Plastics EClean20 Yes Max 2000 litres per day
RX Plastics  AirTech 9000  Waiting on further info  
Taylex ABS 8EP Yes Max 1600 litres per day
Taylex ABS 10EP Yes Max 2000 litres per day
Tech Treat TXT Yes Max 1500 litres per day 
Waipapa Tanks  Econo-Treat VBB C-2200-2 √  Unknown  

Aerated wastewater systems

For all Bay of Plenty (including Rotorua)

These systems meet the requirement to reduce nitrogen to 15g/m3, for Rotorua installations.



Performance Structural Compliance Comment 


Advanced Lifestyle

√  Unknown  


Advantex AX-20


Tech Treat


Yes Max 1500 litres per day

Waipapa Tanks

Econo-Treat VBB C-2200-2


Land application

Wastewater from an AWTS can be discharged to a Land Application Area through drippers. It is important that the drip lines are correctly installed and properly maintained.  To help ensure that the installation and maintenance is correct we have developed some guidelines. Check out Using Driplines for Wastewater Disposal.

Care of your system

The Land Application Area may be under lawn or may be planted.  If you choose to plant the Land Application Area, it is important that the plants are suitable for the locality and the wet soil conditions. See a list of suitable plants below.

Plants to be used over a land application area need to be chosen carefully.  The objective is to ensure that the whole of the land application area is covered.  This will optimise system performance and limit weed growth. 

Select large plants cautiously, as it may be difficult to prune or remove a tree which grows too large. 

There are a number of plants which can be used. You do not need to limit your choice to native plants, but the following is a list of natives which are suitable for wastewater disposal systems in the Bay of Plenty. We encourage you to use plants grown from locally sourced seed that are ecologically appropriate for the part of the region where they are being used.

The list is split into two parts: the grasses and ground covers should be used at the edges and the taller trees and shrubs planted in the middle of the land application area.

Grasses, ground covers and other plants

Astelia grandis (swamp astelia)
Large clump forming plant with wide, pointed bright green leaves.  Will form clumps up to 2m high.

Austroderia fulvida (toetoe)
Long strap-shaped leaves with red orange coloured veins.  The flower heads are cream yellow.  Natural distribution is Tauranga  and Rotorua and south of those centres.

Austroderia toetoe.

Austroderia toetoe
The familiar toetoe with long weeping light green leaves.  Grows in clumps up to 3m high.  Drooping cream coloured plumes.

Blechnum novae-zelandiae (kiokio)
Also known as the palm leaf fern.  Fronds up to 2m long.  Young shoots are pink and turn green as they age.

Blechnum minus
Small low growing fern

Blechnum minus x B. novae-zelandiae hybrids
Hybrids of the two ferns listed above.

Carex dipsacea
Forms a dense clump of upright foliage light green and brown in colour.

Carex dissita (purei)
Also known as forest sedge.  Native sedge with dull green to reddish leaves about 500 mm tall.  Seeds occur on long stems.

Carex geminata
Vigorous native species that grows to 1.5 m tall.  Suitable for a larger area.  Green leaves have a sharp edge.

Carex maorica
Light green to yellow green tufted sedge.  Grows to 700 mm.  No rhizomes.  Prefers full sun.

Carex secta (purei, makura)
Endemic grass species that exhibits tall spreading tussocks.  May grow up to 3 m tall.

Carex virgata
Endemic grass species that forms dense light green tussocks up to 1m tall. 

Cyperus ustulatus (toetoe upoko-tangata, giant umbrella sedge)
Vigorous leafy sedge growing up to 1m in open damp places.

Dicksonia squarrosa.

Dicksonia squarrosa (wheki, tree fern)
Tree fern up to 7m tall.

Elatostema rugosum (parataniwha)
Herbaceous plant up to 500 mm tall that spreads by rhizomes.  Bronze coloured foliage with serrated edge.  Prefers shade.

Gahnia rigida
Robust perennial sedge forming yellow green tussocks to 2m tall.  Long erect leaves to 3m.  Prefers full sun.

Gahnia xanthocarpa
Robust perennial sedge forming dark green tussocks to 3.5 m tall.  Develops glossy black nuts.

Hypolepis ambigua (pigfern)
Large dark green fern with bristly brown hairs on stems.  Prefers shade.

Gahnia rigida.

Hypolepis distans
Small fern which creates a tangled mound 600mm high.  Fronds arise from a rhizome covered by dark red-brown hairs.

Juncus edgariae (wiwi)
Bright green to orange green rush which grows in tussocks to 600 mm high.

Juncus sarophorus
A hardy rush which forms tussocks to 1m.  Prefers full sun.

Lepidosperma australe (square sedge)
Blue green sedge with square stems to 2m tall.

Phormium tenax (harakeke, flax)
Fast growing clump forming flax with large stiff leaves to 3m.  Easily propagated from split fans or grown from seed.  Attracts birds especially tui.

Trees and shrubs

Carpodetus serratus (putaputaweta, marbleleaf)
Lowland forest tree up to 7m tall.  Large bunches of cream coloured flowers appear in spring followed by black berries.

Coprosma areolata
Small leaved shrub species that grows to 4m tall.

Coprosma propinqua (mingimingi)
Small leaved shrub which grows to 3m.  Characterised by divaricating branches and dark blue fruit.

Coprosma propinqua x C. robusta
Common coprosma hybrids with leaf size and shape in a variable range between its two origin species.

Coprosma robusta (karamu, shining karamu)
Shrubs or small trees growing to 3 m tall with glossy green leaves.  Masses or orange-red fruit in autumn are attractive to birds.  Hardy plant.

Coprosma tenuicaulis (swamp coprosma)
Endemic species that grows to 3m tall.  Leaves pale green with slender branches.

Cordyline australis (ti kouka, cabbage tree)
Palm like in appearance with large heads of linear leaves and panicles of scented flowers.  Grows eventually to 12m.

Dacrycarpus dacrydiodes (kahikatea, white pine)
Relatively slow growing tree that grows to 40m.

Geniostoma rupestre (hangehange)
Common forest shrub with pale green glossy foliage, growing to 2-3 m.  Tiny flowers give off strong scent in spring.

Hebe stricta (koromiko)
Shrub or small tree growing to 2m.  Natural forms have white to bluish flowers.  Prefers full sun.

Kunzea ericoides (kanuka)
Fast growing small leafed tree to 5m.  Hardy.  Prefers full sun and well drained situation.

Laurelia novae-zelandiae (pukeatea)
Large upright tree (to 30 m) with attractive bright green foliage and distinctive whitish bark.  Fast growing.  Tolerant of some sun and frost.  Not tolerant of wind.

Leptospermum scoparium (manuka)
Shrub or small tree growing to 4m in height.  Common shrub varying in form throughout New Zealand.  Ideal to provide shelter for other plants as it is quick growing and hardy.  Requires full sun.  Tolerant of difficult conditions.

Melicytus ramiflorus (mahoe)
A fast growing but long lived tree to 7 m height.  Tolerates some frost, wind and sun.  Birds are attracted to the blue berries.  Requires shelter to establish.

Pennantia corymbosa (kaikomako
Slow growing species that will reach 12m.

Pittosporum tenuifolium (black matipo)
Small tree with dark twigs bearing pale green shiny leaves.  Can grow to 5m.

Plagianthus regius subspecies regius (ribbonwood)
Small deciduous tree with interlacing branches and small leaves.  Grows to 6m.

Rhopalostylis sapida (nikau)
New Zealand’s only palm, with red berries attractive to birds.  Requires light shade, plenty of moisture and protection from wind when young.

Sophora microphylla (kowhai)
Divaricating and bushy tree with small green leaves growing to 6m.  Yellow flowers which attract birds and produce distinctive legume seed pods.

Sophora tetraptera (kowhai)
Tree growing to 10m with spreading habit.  Large grey-green leaves and yellow flowers.

Syzgium maire (maire tawake)
Attractive and moderately growing wetland tree to 12m with bronze foliage, large bunches of reddish fruit and distinctive whitish bark.  Tolerates some frost.

Vitex lucens (puriri)
Fast growing to 20m in fertile, open but sheltered conditions.

If your property is within a maintenance zone there are some particular requirements (see below).