Polypropylene soakwell delivery servicing Perth, WA.
DIY - WE TEACH YOU TO DO IT YOURSELF

Install Your Own Soakwells With Expert Help

Get step-by-step instructional videos, a soakwell calculator based on Perth council stormwater formulas, trafficable polypropylene soakwells with free delivery on orders over $250 within the zone on our map, and a chat assistant to answer any questions instantly.

  • Video-led DIY method (assembly video plus full install video when you order)
  • Soakwell calculator to size your system correctly
  • Australian-made trafficable polypropylene soakwells
  • Free delivery on orders over $250 within our mapped free delivery zone
  • Chat assistant for instant answers to any soakwell question
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Watch assembly video Shop 140L soakwells
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DIY Soakwells assembly video thumbnail

Assembly video: watch a 140 'double', 2 Versitank joined together, being assembled.

DIY Soakwells install preview thumbnail

1-min install preview - order to unlock the full walk-through.

Watch how it works

Overview of the DIY soakwell installation process.

We sell Australian-made plastic soakwells — Perth's best prices.

  • Watch the videos

    Watch the full assembly video and a preview of the installation video before you buy. The complete installation walk-through is included with your order.

  • Size it right with our calculator

    Enter your suburb and roof area and our will suggest a number of soakwells based on a council formula.

  • Ask our chat assistant

    Not sure what you need? Our answers sizing, installation and product questions 24/7, drawing on 18 years of local soakwell experience.

  • Easy to buy

    Australian-made soakwells with free delivery on orders over $250. Pickup available. Pay by credit card, bank transfer, or Afterpay and split into four interest-free payments.

Cheaper than Bunnings!
140 litre polypropylene soakwell with dividers
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See the Method Before You Buy

Two videos work together: a public assembly video so you can see how our trafficable polypropylene modules go together, and a full installation walk‑through that you unlock when you order.

DIY Soakwells assembly video thumbnail

Assembly video: watch a 140 'double', 2 Versitank joined together, being assembled.

DIY Soakwells install preview thumbnail

1-min install preview - order to unlock the full walk-through.

What These Videos Actually Give You

The big hurdle with DIY soakwells isn’t just buying the right size - it’s believing you can actually do the job. These videos are built to remove that doubt.

  • Works with our calculator - once you know how many soakwells you need, the videos show you how to put that system in the ground.
  • Assembly video - shows exactly how each trafficable module clips and locks together, so there are no surprises on the day.
  • Full install video - walks you through excavation, layout, pipe connections, backfilling and compaction using the same products we sell.

Order Once - Get the Full Method

When you order your soakwells from us, you’re not just buying product. You get the right sized soakwells and the complete installation video to finish the job.

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Polypropylene soakwell delivery servicing Perth, WA.

Buy Trafficable Polypropylene Soakwells

Prices include GST, correct as of Wednesday the 11th of November, 2026

We sell 2 models of polypropylene soakwell.

The Versitank by Sika provides more volume in a smaller area when installed in lines to maximise surface area as recommended, due to its reduced length. It also locks together to form units of 2 or 3 for easier handling and installation.

The Drainwell by Novaplas is a good choice when you have hard digging or a high water table and minimising depth is a concern.

We recommend the Versitank in most situations and all our video content is based on the Versitank, although the same installation principles apply to both.

Choose pickup or free delivery for orders over $250.00 (within the free delivery zone on our map) at checkout.

Geofabric included by default — toggle it off below to price without.

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Polypropylene soakwell delivery servicing Perth, WA.

Stormwater Piping and Fittings

*** Please note soakwell purchase is required ***
All prices include GST and are correct as of Wednesday the 11th of November, 2026

Please contact us if you need assistance. The items listed below include everything you could need for your soakwell installation.

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Polypropylene soakwell delivery servicing Perth, WA.

Installation Tips

The starting point for any soakwell system is calculating the required volume, based on your roof area (catchment area) and the predicted rainfall formula from your local council.

Location

When choosing a location, the soakwells should be at least 1.5 - 1.8m from footings and boundaries, depending on your council. Never start digging until you know where all your underground services are (sewer / gas / power / water / phone / fibre etc).

You can contact Dial Before You Dig for free to find out about the underground services on public land and we have some tips for you as well.

Location diagram showing key soakwell placement and clearance guidance

Polypropylene Soakwell Installation

To maximise the area in contact with the sand and take advantage of the design, polypropylene soakwells are ideally installed in rows in only two or three locations.

This is important because downpipes can take different amounts of water from the roof at different times due to the fall of the gutters, direction of the wind/rain or maintenance issues.

We always aim for just two locations, a row of polypropylene soakwells at the front and back of the house. This is dependent on factors including available space and the location of underground services as well as the distribution of roof area.

Polypropylene soakwell installation trench prepared for a residential stormwater system
  Tip!  Halve the number of 140 polypropylene soakwells to find out the total length!
eg. 12 soakwells = 6m long (W x 0.5m, D x 0.9m).

Stormwater Piping Installation

The inlets are cut in the top of the soakwell. The inlets can be cut prior to wrapping, otherwise they can be cut once the soakwells are installed (before backfilling). Ensure you do not cut the hole where there is a divider.

For the piping plan, walk around your house and draw a rough plan of the boundary, house perimeter, downpipes and proposed soakwell locations.

Pace out the length of pipe required from the furthest downpipe to the soakwells. The fall for the pipe is 100mm for every 10 metres. Cut a hole in the top of the soakwell for the pipe. Make sure you glue the fittings and pipe.

A simple approach is best for digging and measuring. We only use 90° elbows for corners and try to avoid 45° bends. For junctions we recommend using Y-junctions with M&F 45° bends to create a Y shaped T for easy trenching and the best performance.

You should use grates under the downpipes to prevent water rising up the downpipes in any situation and to allow the system to breathe for optimal flow. Some exceptions could be undercover or wooden areas.

Stormwater piping installation trench with connected pipework running to the soakwell
 Tip! - The inlets are cut into the top of the soakwell for easy access.

Sand Disposal

Don't forget you will have the sand displaced by the soakwells at the end. To estimate the amount take the total volume of the polypropylene soakwells and add another 30%. We have some tips on how to deal with this as well.

Excavated sand stockpile from a soakwell installation ready for disposal or reuse
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Polypropylene soakwell delivery servicing Perth, WA.

Frequently Asked Questions

How to use the shop
How do I size my system?

To find out the number of soakwells needed based on your roof area click:

How do I get more product information?

For more information on our trafficable polypropylene soakwells in the shop click:

 Click For More Info
How do I add items to the cart?

To add items to the cart in the shop click:

What is the counter?

This counter displays the number of each item in the cart:

0
How do I checkout?

To view the items in your cart and to checkout click:

Checkout
How do I ask a question?

Have a question? Our chat assistant can answer sizing, installation, and product questions instantly:

When does delivery happen and what are the cut-off times?

Delivery runs every Friday. Orders must be placed by 12pm Thursday to make that week's run. Between 4pm and 6pm on Thursday we send an SMS with your 1-hour delivery window for the following day.

Delivery is free on orders over $250 within the free delivery zone. Orders under $250 attract a $25 delivery fee.

Is my suburb in the free delivery zone?

Type your suburb below to check. Free delivery applies to orders over $250 within the zone. If your suburb is outside the standard zone, contact us and we can arrange delivery.

How do I connect the pipe to a soakwell?

Run 90mm U-PVC pipe from each downpipe to the soakwell. Maintain a fall of 100mm per 10 metres so water flows by gravity. Use 90° F&F elbows for corners and avoid 45° bends where possible. Where two pipe runs meet, use a Y-junction with a 45° M&F bend to form a T-shaped junction for best flow. Glue all fittings and pipe joints with non-pressure PVC cement.

At the base of each downpipe, fit an offset grate. For undercover downpipes where a grate would risk water splashing, use a downpipe adaptor with inspection flap instead.

The inlet enters through the top panel of the soakwell, not the side. Cut the hole where there is no divider underneath, glue a short piece of pipe (approximately 100mm) into the bottom socket of a 90° elbow to form a periscope shape, then push the assembly into the inlet hole so the bottom of the elbow sits flush with the top of the soakwell. Connect your pipe run to the elbow's horizontal outlet.

Buy Trafficable Polypropylene Soakwells

Can I drive a car over polypropylene soakwells?

It depends on which soakwell you choose.

The 140L Versitank (3 dividers) is fully trafficable and rated for residential roads, driveways, carparks, and concrete slabs. Its interlocking design locks all panels and dividers together so it cannot shift or collapse under vehicle load. The 4-divider version offers extra strength and is the right choice for heavy driveways, concrete slabs poured directly over, or commercial applications.

The 130L Drainwell 4-divider is rated for light traffic, meaning vehicles occasionally accessing a driveway or footway. The 130L Drainwell 3-divider is foot traffic only and should not be installed under a driveway. If a non-trafficable soakwell is placed under vehicle load it can collapse and sink.

For any installation under a driveway or area where a car will park or drive, use the 140L Versitank.

What comes with a soakwell?

Each soakwell comes as a flat pack and goes together on site. Here's what's in the box:

140L Versitank: 4 panels (500x500mm each, top, bottom and two sides), 3 or 4 dividers (440x500mm, the two end dividers double as end walls with 1 or 2 internal dividers), and a 2m x 2.4m sheet of geotextile fabric. The fabric covers a single unit or a joined pair. Singles may need a trim.

130L Drainwell: 4 panels (720x400mm each, top, bottom and two sides), 3 or 4 dividers (360x400mm, same arrangement), and a 2m x 1.3m sheet of geotextile fabric.

Geotextile is included with every order at no extra cost.

What is a Versitank and Drainwell?

Versitank is our 140L soakwell, made in New South Wales by Sika (formerly Emlich). Drainwell is our 130L soakwell, made in Western Australia by Novaplas. Both are Australian-made from 100% recycled polypropylene and come with geotextile included.

Are the soakwells Australian made?

Yes, both are made in Australia. The 140L Versitank comes from Sika (formerly Emlich) in New South Wales. The 130L Drainwell is made by Novaplas in Western Australia.

What size is the geotextile?

The 140L Versitank comes with a 2m x 2.4m sheet, enough to wrap a single unit or a joined pair. If you're only wrapping one you'll need to trim it down. The 130L Drainwell comes with a 2m x 1.3m sheet. Extra geotextile is available to buy separately if you need more.

About DIY Soakwells™

This website is designed to equip you with the knowledge to make an informed decision when purchasing polypropylene soakwells for your home or extension. Use our soakwell calculator to size your system, watch the installation videos, ask our chat assistant any question, and order everything you need in one place.

DIY Soakwells™ supplies and delivers polypropylene soakwells, geotextile fabric, U-PVC stormwater pipe, fittings and accessories in Perth, Western Australia.

When you order from us you also receive great service and comprehensive on-site guidance covering all aspects of the installation.

We specialise in polypropylene soakwells. Polypropylene soakwells offer strength, efficiency and ease of installation. We supply all the necessary materials for your stormwater project, from the polypropylene soakwells to the piping and fittings.

DIY Soakwells team installation scene for the About DIY Soakwells section
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Polypropylene soakwell delivery servicing Perth, WA.

Mini Excavator Hire

Make the hardest part of the job easier. At just 700mm wide, you CAN fit an excavator back there!

DIY Soakwells recommends installing your  soakwells in rows , in as few locations as possible.  Our tiny 1t excavator , with custom made 600mm bucket is perfect for the job.

  Taking you places you never thought you could go!
Pickup or Delivery available.

Features

  • Easy to operate, no license required in Western Australia.
  • This mini excavator can withdraw its tracks to become just 700mm wide!
  • With a folding, removable rollcage this machine becomes just 1.79m tall.
  • Dig up to 1.71m deep.
  • Equipped with a 180mm bucket (shovel sized), 350mm toothed bucket and 600mm mud bucket perfect for soakwells.
  • Push sand around with the blade.
Mini excavator working in restricted-access and tight-space conditions

Rates & Availability

Mini excavator (1t)$200.00 + GST per 24 hours
Mini dumper$200.00 + GST per 24 hours
Freight (pickup or delivery)From $100.00 + GST each way

For availability and booking details, please visit our dedicated excavator hire site: perthminiexcavatorhire.com.au .

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Our mini excavator is the smallest in Perth.
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