Poly Septic Tanks and Leach Drains

Print Friendly Price Lists

The range of septic tanks and leach drain on this page are
approved by the WA Health Department under
“Approved Non-concrete Septic Tanks and Leach Drains”

You can download the list of manufacturers we supply here
Approved Non Concrete Septic Tanks and Leach Drains (PDF)

You may also be interested in our Ablution Block / Under Deck Tanks range.

Septic Tanks

Poly Septic Tanks and Leach Drain are lightweight, easy to transport and install. Manufactured from UV stabilised durable polyethylene. Anti floatation ring and ribbing incorporated into the design.

The SEP-4000 has a baffle and is supplied as a complete kit including offset inlet and outlet ‘T’ pieces as well as a manhole.

Product IDDiameter (mm)Total Height (mm)DescriptionPrice ($)Weight (kg)Image
SEP-LID-E (NB)N/AN/ALid to suit all except NEP-4000-E49.002.5
SEP-500 (NB)7501380500 Litre Pump Out Pit625.0045
SEP-1000 (NB)110013801,000 Litre Pump Out Pit688.0075
SEP-1200 (NB)140019001,200 Litre Septic Tank853.0085
SEP-1450-E (NB)125015001,450 Litre Septic Tank915.00N/A
SEP-2200-E (NB)154015002,200 Litre Septic Tank955.00N/A
SEP-2200 (NB)170018502,200 Litre Septic Tank1142.00125
SEP-2200 (B)170018502,200 Litre Septic Tank1279.00135
SEP-3200-E215017453,200 Litre Septic Tank1815.00N/A
NEP-4000-E (B)220017704,000 Litre Septic Tank (Baffled)1887.00200
DV-100N/AN/A100mm Diverter Valve173.00N/A
(NB) = Non Baffled | (B) = Baffled

Manufacturer/Distributor: NEP-4000 Rapid Plastics WA Pty Ltd | SEP-500, SEP-1000, SEP-1200, SEP-2200 Filtrex Innovative Wastewater Solution.

Leach Drain Kits


The leach drain systems are designed to integrate efficiently with the septic tank units (above) although they can be utilised in any waste water situation requiring a leaching system.

Leach Drain Systems are available in a range of sizes. Manufactured from strong, light-weight polypropylene, the leach drain systems are easy to install, cost-effective solutions for effluent waste issues. They are flat packed for easy and efficient logistics. The systems are very flexible with a range of configurations for every requirement, designed to meet strict industry regulations and standards.


100% Recycled, Light Weight, modular, 95% Void Area, Strong, Service Temperature -20 to 120 Degrees C, Polypropylene, Flat Pack Form, Made in Western Australia.


Environmentally Friendly, Simple to Install, Trafficable, Cost-Effective, Chemically Inert, Not Affected By Mould or Algae, UV Stabilised, Water Saving, 100% Recyclable.


The first tank ONLY  has a bottom to prevent scouring from the outfall pipe

All other tanks, after the first tank, do not have a bottom.

Product IDLength (M)Large PanelsSmall PanelsTotal BoxesGeoCloth (M)Price ($)
LD044191865.5 X 2343.00
LD055252176 X 2392.00
LD066282797.5 X 2440.10
LD0773433119 X 2537.00
LD08837361210 X 2587.00
LD09940391310.5 X 2685.00
LD101043421411 X 2733.00
LD111149481612.5 X 2831.00
LD121252511713.5 X 2880.00
LD131358571915 X 2928.00
LD141461602015.5 X 21,026.00
LD151564632116 X 21,075.00
Larger sizes available on request

Infiltration Tunnels / Leach Drains


The Infiltration Tunnel has been designed mainly for use in private and rural areas. The system consists of one or several tunnel modules and two endplates can be extended at will. Installation of the Infiltration Tunnels can be in one or more lines of the same level. As the weight of one module is only 11 kilos, the handling of the Infiltration Tunnel is excellent.

Product IDDescriptionLength (mm)Width (mm)Height (mm)Price ($)Image
GIT-300Sicker Infiltration Tunnel Module1160800510$120.00 each
GIT-EPSicker Infiltration Tunnel End Plate (Pack of 2)25800510$63.00 set of 2
GIT-IHDN200 Inspection HatchN/AN/AN/AP.O.A
GIT-ICDDN100 Infiltration Choke Drain (Delayed drain of 1 to 6.5 litres per second)N/AN/AN/AP.O.A
GIT-DAEDN100 Deaeration EndN/AN/AN/AP.O.A
GEOTEXGeotextile Material (2 Metres Wide)N/A2000N/A$6.00 Per Linear Metre