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

Install Your Own Soakwells With Expert Help

Ask me anything about soakwells.

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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Need excavator hire?

Assembly video – watch a complete module go together step by step.

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 soakwells.
Perth's best prices, Perth's best products!
15 years local experience

  • 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 15 years of local soakwell experience.

  • Easy to buy

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

Cheaper than Bunnings!
140 litre polypropylene soakwell with dividers
Buy plastic soakwells - Bunnings, Novaplas, Perth.

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.

Assembly video – watch a complete module go together step by step.

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.

  • 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.
  • Works with our calculator – once you know how many soakwells you need, the videos show you how to put that system in the ground.

Order Once – Get the Full Method

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

Try the calculator

Buy Trafficable Polypropylene Soakwells

Prices include GST, correct as of Monday the 13th of April, 2026

All soakwell purchases include the required geofabric at no extra cost. Choose pickup or free delivery for orders over $250.00 (within the free delivery zone on our map) at checkout.

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Stormwater Piping and Fittings

*** Please note soakwell purchase is required ***
All prices include GST and are correct as Monday the 13th of April, 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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Guidance, Tools & Easy Buying

DIY SOAKWELLS PTY LTD. ACN 606 865 507

Watch the Videos

Full assembly video free to watch.
1-minute installation preview free to watch.
Full installation guide included with order.
Know what to expect before you buy.

Soakwell Calculator

Open the calculator.
Enter your suburb and roof area.
Sized to local council drainage formula.
Covers all Perth metro suburbs.

Chat Assistant

Ask any question, 24/7.
Sizing and product guidance.
Installation and planning guidance.
Backed by 15 years local experience.

Easy to Buy

Australian made Australian-made polypropylene soakwells.
Free delivery on orders over $250.
Pickup available.
Visa Mastercard Pay by credit card or Afterpay.

The Highest Quality Polypropylene Soakwells in the World.
Bar None.

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
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 860mm blade.
Mini excavator working in restricted-access and tight-space conditions

Check Current Rates and Availability

For up-to-date pricing, availability and booking details, please visit our dedicated excavator hire site: perthminiexcavatorhire.com.au .

Our mini excavator is the smallest in Perth.
Polypropylene soakwell delivery servicing Perth, WA.

How to Use the Shop

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

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

To add items to the cart in the shop click:

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

0

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

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

Delivery is free for orders over $250.00 within the free delivery zone. ($25.00 for orders under $250.00).

Delivery is every Friday, with a 12pm Thursday cut-off. Between 4pm and 6pm on Thursday of your delivery week, we send an SMS with your 1-hour delivery window. You will be emailed a final invoice after delivery with bank account details. Payment can be made online by bank transfer or credit card.

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