Poly Septic Tanks and Leach Drains

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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 design.

The SEP-4000 has a baffle and is supplied as 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-LID00Lid to suit all except NEP-400040.002.5
SEP-5007501380500 Litre Pump Out Pit (Not Baffled)465.0045
SEP-1000110013801,000 Litre Pump Out Pit (Not Baffled)650.0075
SEP-1450-C125015001,450 Litre Septic Tank (Not Baffled)761.00N/A
SEP-2200-C154015002,200 Litre Septic Tank (Not Baffled)795.00N/A
SEP-1500140019001,200 Litre Septic Tank (Not Baffled)820.0085
SEP-2200170018502,200 Litre Septic Tank (Not Baffled)1095.00125
SEP-2200170018502,200 Litre Septic Tank (Baffled)1230.00135
NEP-4000220017004,000 Litre Septic Tank (Baffled)1595.00200

This range of septic tanks is approved by the WA Health Department under
Approved Non-concrete Septic Tanks” (Link updated 05/07/2016 – Webpage opens in a new window or tab).

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

If this link is broken please contact us so we can fix it and refer to the Department of Health (WA) – Approved Wastewater Systems (Webpage opens in a new window or tab).

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 (3.02 Metres to 33.22 Metres. Manufactured from strong, light-weight polypropylene, the leach drain systems are an easy to install, cost effective solution 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 regulation and standards. The leach drains listed below are the DW1592 model and not the DW1992 model.


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 dimensions for each “Module or Cell” are approx Length: 755mm X Width: 400mm X Height: 437mm

Product IDLength (m)DescriptionPrice ($)
DW-LD-3023.02Leach Drain Kit200.00
DW-LD-3783.78Leach Drain Kit275.00
DW-LD-4534.53Leach Drain Kit330.00
DW-LD-5295.29Leach Drain Kit385.00
DW-LD-6046.04Leach Drain Kit440.00
DW-LD-6806.80Leach Drain Kit495.00
DW-LD-7557.55Leach Drain Kit550.00
DW-LD-8318.31Leach Drain Kit605.00
DW-LD-9069.06Leach Drain Kit660.00
DW-LD-9829.82Leach Drain Kit715.00
DW-LD-105710.57Leach Drain Kit770.00
DW-LD-113311.33Leach Drain Kit825.00
DW-LD-120812.08Leach Drain Kit880.00
DW-LD-128412.84Leach Drain Kit935.00
DW-LD-135913.59Leach Drain Kit990.00
DW-LD-143514.35Leach Drain Kit1045.00
DW-LD-151015.10Leach Drain Kit1100.00
DW-LD-158615.86Leach Drain Kit1155.00
DW-LD-166116.61Leach Drain Kit1210.00
DW-LD-173717.37Leach Drain Kit1265.00
DW-LD-181218.12Leach Drain Kit1320.00
DW-LD-188818.88Leach Drain Kit1375.00
DW-LD-196319.63Leach Drain Kit1430.00
DW-LD-203920.39Leach Drain Kit1485.00
DW-LD-211421.14Leach Drain Kit1540.00
DW-LD-219021.90Leach Drain Kit1595.00
DW-LD-226522.65Leach Drain Kit1650.00
DW-LD-234123.41Leach Drain Kit1705.00
DW-LD-241624.16Leach Drain Kit1760.00
DW-LD-249224.92Leach Drain Kit1815.00
DW-LD-256725.67Leach Drain Kit1870.00
DW-LD-264326.43Leach Drain Kit1925.00
DW-LD-271827.18Leach Drain Kit1980.00
DW-LD-279427.94Leach Drain Kit2035.00
DW-LD-286928.69Leach Drain Kit2090.00
DW-LD-294529.45Leach Drain Kit2145.00
DW-LD-302030.20Leach Drain Kit2200.00
DW-LD-309630.96Leach Drain Kit2255.00
DW-LD-317131.71Leach Drain Kit2310.00
DW-LD-324732.47Leach Drain Kit2360.00
DW-LD-332233.22Leach Drain Kit2420.00

Assembly Instructions

This range of septic tanks is approved by the WA Health Department under
Approved non-concrete leach drains“ (Link updated 05/07/2016 – PDF opens in a new window or tab).

Manufacturer/Distributor: Novaplas PL

If this link is broken please contact us so we can fix it and, refer to the Department of Health (WA) – Approved Wastewater Systems (Webpage opens in a new window or tab).

Infiltration Tunnels / Leach Drains


The Infiltration Tunnel has been designed mainly for the use in private and rural areas. The system consists of one or several tunnel modules and two end plates 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 (m)Width (mm)Height (mm)Price ($)Image
GIT-300Sicker Infiltration Tunnel Module1160800510114.00
GIT-EPSicker Infiltration Tunnel End Plate (Pack of 2)2580051062.00
GIT-IHDN200 Inspection Hatch98.00
GIT-ICDDN100 Infiltration Choke Drain (Delayed drain of 1 to 6.5 litres per second)105.00
GIT-DAEDN100 Deaeration End114.00
GEOTEXGeotextile Material (2 Metres Wide) - Per Linear Metre200010.00