Rainwater Harvesting :

Rainwater Harvesting Enviro Module

EcoClean-Ausdrain EnviroModule

EcoClean Ausdrain recognizes water is one of our most precious natural resources, an asset to be conserved and re-used wherever possible.

Our water resources are limited and at present the world’s consumption of this resources far exceeds its natural replenishment. Too much of our stormwater is wasted, escaping via stormwater channels out to sea.

Systems for stormwater infiltration, rainwater harvesting and bio-remediation contribute towards better management of this precious resource.

Ecoclean Ausdrain products have been designed and developed to fit with the principles and best management practices for Water Sensitive Urban Design. Conservative and re-use of stormwater is making an important contribution to the challenges facing mankind over the coming decades.

Ecoclean Technology Sdn Bhd has made a commitment towards improving the methods of stormwater conservation to assist in creating a more sustainable future for us all.

Important design information
EcoClean Ausdrain EnviroModules must be installed with the 450mm side as the height to ensure maximum strength.

Standard duty modules are suitable for landscaped areas only. Extra duty modules are required for trafficable areas such as driveways and car parks and where greater depth of cover is needed. A suitable pavement designed by a certified engineer is required over the surface of the tank.

Compressive strength tests were conducted by a certified testing authority and represent the maximum strength in a controlled environment that replicates the case when soil is uniformly distributed under a short term static load.

Safety factors should be employed to the compressive strength results. This is to allow for actual site conditions, possible variations in recycled material and any potential creep factors.

EcoClean Ausdrain Rainwater Harvesting Tank - Residential:

Create your own underground water supply with an EcoClean Ausdrain Rainwater Harvesting Tank is the cost-effective and flexible solution to your Harvesting Tank is the cost-effective and flexible solution to your underground water storage requirements.

Rainwater is collected from your roof and fed into a CDS Filtration Unit where it is pre-filtered prior to being collected in the Ecoclean Ausdrain Rainwater Harvesting Tank. As the water is stored underground it is kept cool which assists in maintaining water quality and avoiding the possibility of algae growth.

Water is then pumped in and around your home providing a lifetime supply of clean natural water ideal for non-potable uses including garden irrigation, toilets, laundry and pool refilling. Upon request EcoClean Ausdrain Rainwater Harvesting Tank can be manufactured using food grade material and supplied for potable water purposes.

Beat water restrictions, water rates & secure your future water supply! Our water resources are limited and with water restrictions here to stay, installing an EcoClean Ausdrain Rainwater Harvesting Tank Tank means investing in your water future

It is predicted that the cost of water will rise considerably in the future. So even if your lifestyle is not disadvantaged by restrictions on when and how much water you can use, by installing an Ecoclean Ausdrain Rainwater Harvesting Tank today, you are protecting against the rising cost of water tomorrow.

Save time, money & the environment!

Choosing to install an Ecoclean Ausdrain Rainwater Harvesting Tank will not only save money but you are also helping to save the environment by installing a product manufactured from quality recycled materials. Not only that but an EcoClean Ausdrain Rainwater Harvesting Tank can be installed faster than any other underground system saving time on your building project and minimising the disruption to your home life.

Create the tank dimensions and capacity you require without taking up valuable land area! Installing an Ecoclean Ausdrain Rainwater Harvesting Tank underground won't compromise valuable land area and avoids the unsightly visual impact created by above ground water tanks. Ecoclean Ausdrain Rainwater Harvesting Tank can be supplied in standard sizes or individually designed to the required dimensions that best suits the available land space.

EcoClean Ausdrain Rainwater Harvesting Tank - Commercial:

The high compressive strength and durability of EcoClean Rainwater Harvesting Tank makes it suitable for installation under driveway and car park areas, thus making the most of valuable and often limited land area.

The EcoClean Rainwater Harvesting Tank provides a cost-effective and flexible solution to underground water storage requirements. The modular flexibility of the system offers enormous scope to maximize the amount of water storage and design a tank that best suits each individual project.

EcoClean Rainwater Harvesting Tank can be installed in landscaped areas and under trafficable areas such as a driveway or carpark where external space is limited. When installed in a trafficable area, a pavement consisting of stabilized road base and asphalt or a reinforced concrete slab is required over the surface of the tank according to engineer's specification.

The EcoClean Rainwater Harvesting Tank is recommended for car and light commercial vehicle traffic. The tank can be designed for heavy vehicle traffic in certain situations. This will require consultation with EcoClean Technology and approval by a certified engineer.

The EcoClean Rainwater Harvesting Tank is surrounded in a durable, high tensile strength factory welded waterproof liner. The liner is supplied as a base and cap and is made to order according to specific tank dimensions. The cap overlaps the base and does not require joining or sealing on site ensuring that each tank is completely watertight.

Inlets and outlets connect to a pre-cast pit that sits within the liner of the tank. This pit acts as a maintenance and inspection chamber for the tank and houses either a suction line connected to an above ground pump or a submersible pump.

It is essential that water entering the tank is pre-filtered to avoid long term and costly maintenance of the tank. Either an EcoClean CDS filtration unit or a CDS Gross Pollutant Trap (GPT) should be installed to prevent sediment and gross pollutants from reaching the tank. In the event that the tank surcharges, excess water is discharged through an overflow pipe to a designated stormwater outlet.

Completed EcoClean Rainwater Harvesting Tank Projects
The largest EcoClean Rainwater Harvesting Tan installed by Ecoclean Technology so far has a storage capacity of 0.226 Million liters or 226 m3 located at Batu Pahat, Johore. For details please refer to Project References.


Rainwater Harvesting
  1. Down pipe
  2. Inlet pipe
  3. CDS Filtration Unit
  4. Discharge pipe to drain or soak away pit
  5. Discharge Control pit
  6. Lockable lid /grate
  7. EcoClean Ausdrain EnviroModules
  1. Welded tank liner
  2. Protection fabric
  3. Overflow pipe
  4. Coarse sand backfill
  5. Maximesh screen
  6. Suction line
  7. About ground pump


System components

  • EcoClean Ausdrain EnviroModules - 9.6 modules per 1000 litres
  • Connector pins (optional)
  • EcoClean CDS unit
  • Factory welded tank liner
  • Geotextile fabric

EcoClean Ausdrain On-Site Detention System

Manufactured from 100% recycled plastic, the EcoClean Ausdrain On-site Detention (OSD) Tank can be installed in a fraction of the time required to construct a concrete OSD tank.

Ecoclean Ausdrain On-site Detention Tanks are easily installed on any project saving valuable time and money. Compared to a concrete tank there are no footings, slabs, reinforcement or piling required. Each tank is sealed with a strong and durable waterproof liner.

Ecoclean Ausdrain On-site Detention Tanks create the required void storage allowing stormwater to be temporarily stored inside the tank before discharging to a designated outlet. Ecoclean Ausdrain On-site Detention Tanks are available in standard duty suitable for installing under landscaped areas or extra duty for trafficable situations. The modular nature of the tank allows greater scope for design flexibility and tank sizing.

It is essential that stormwater entering the tank is prefiltered using an Ecoclean CDS Gross Pollutant Trap or filtration unit to avoid long term and costly maintenance of the tank. The water then enters a precast R.C. sump fitted with an orifice pipe to reduce the rate of discharge from the tank to the designated stormwater outlet.

Completed EcoClean Ausdrain On-site Detention tank Projects
The largest EcoClean Ausdrain On-site Detention tank installed by Ecoclean Technology so far has a storage capacity of 1.65 Million liters or 1,650m3 located at Kuala Lumpur. For details please refer to Project References.




Rain Harvesting Enviro Module
Sample Bill of Quantity for OSD/RWH    On-Site Detention Tank/ Rainwater Harvesting Tank Project Profiles Download Test Report
Download Test Report - SIRIM Download Test Report - Enviro Module