STORMWATER SPECIALISTS

Subsoil & Groundwater Management

When water is coming from below — through the soil, behind retaining walls, or up through the subfloor — surface drainage won’t solve it. We design and install subsoil drainage and groundwater interception systems that stop the water at the source.

Book an Assessment Call 0400 919 135

15+ Years

Local Experience

4.9 Rating

29+ 5-Star Reviews

✓

Groundwater experts

Below-ground solutions

Stop Water at the Source — Not the Surface

Groundwater and subsoil moisture are the hidden causes behind damp subfloors, retaining wall failures, and ongoing water ingress. We use agline drainage, cut-off systems, and integrated waterproofing to intercept water underground before it reaches your property — designed for your specific site conditions, soil type, and water table.

What’s Included

Purpose-built subsoil and groundwater systems designed for your site — from investigation through to installation and testing.

✓ Agline (subsoil) drainage systems — correctly graded, wrapped and bedded

✓ Groundwater interception behind retaining walls

✓ Aquifer / cut-off drainage systems for high water table sites

✓ Integrated drainage and waterproofing systems (designed and installed in-house)

Book an Assessment

Who Needs Subsoil Drainage?

Homeowners

Damp subfloors, musty smells, moisture under the house, or water seeping through retaining walls — subsoil drainage intercepts the water before it causes damage.

Sloping & Low-Lying Sites

Properties below neighbouring land, near reserves, or with high water tables need engineered groundwater management to stay dry long-term.

Retaining Wall Owners

Water pressure behind retaining walls causes cracking, leaning, and failure. We install drainage and waterproofing to relieve hydrostatic pressure.

Builders & Landscapers

New builds, extensions, and retaining wall projects on wet sites need subsoil drainage designed and installed before backfill — we coordinate with your build schedule.

What Our Customers Are Saying

4.9 Rating

29+ 5-Star Reviews

Xpedite Plumbing & Gasfitting

4.9

Based on 32 reviews

review us on

Jeni Diasinos

04:11 10 Mar 26

Xpedite plumbing are excellent in solving serious plumbing issues which we had and they correctly identified the problem and were polite very efficient and the quote was very reasonable and explained the procedure in detail…… we thoroughly recommend Xpedite plumbing for any plumbing problems as they definitely know what the problem is and how to fix it….. no more leaking water in our downstairs office and storerooms and garage!!…. Jeni and John Diasinos, Eleebana

Catherine Powell

09:46 16 Feb 26

The work done by Bryce and his apprentice was excellent. Bryce was very efficient, knowledgeable and completed the work leaving the site clean and tidy. The work involved replacing original gas and water pipes that were 60-70 years old, as well as replacing a hot water service.The end results were very pleasing. Would highly recommend Xpedite.

sam goodwin

08:49 16 Feb 26

Justin and his team did a great job in fixing our drainage issues. Communication was excellent from quote to finish. I would recommend them.

bryson croese

06:54 16 Feb 26

I couldn’t be happier with the team at Expedite Plumbing! They completed all the new sewer and stormwater work and roughed in the plumbing for my entire brand new home, and the quality of their work was outstanding from start to finish.Huge thanks to Bryce, Justin, Curly, and Jayden — they were professional, reliable, and incredibly hardworking. The communication was clear, the job was done on time, and everything was completed to a very high standard.I couldn’t recommend them highly enough. If you’re building or renovating and need a top-notch plumbing team, these are your guys!

John Vernon

04:31 16 Feb 26

Xpedite Plumbing and Gasfitting quickly diagnosed the problem with my rainwater harvesting system ang got it working pending carrying out a full clean. Xpedite carried out a full clean and fitted a level gauge to the water collection tank. The system is now functioning correctly. I am very pleased with the service provided by Expedite.

John Linn

02:12 14 Jan 26

My entire experience with Expedite was very professional.Arrived with lots of notice and carried out the job with ease.Fully recommend this company.

Mitch Duncan

21:23 31 Dec 25

Justin was great during the quote process, answering all our questions and working with us to get a good design for our backyard drainage (ag lines, box drains and a pump) to ensure it drains properly. During installation, the team was professional and did a great job including post installation clean up. The yard now drains and excess surface water drains away. Overall excellent.

Jay Riege

00:40 03 Nov 25

I cannot say enough about Xpedite and their team. The work is flawlessly neat. The team is courteous working around our dogs and schedule and leaving the worksite neat and as it was originally found. The attention to detail to minimise disruption and come up with creative solutions (thanks Blake) has been outstanding. Everything is delivered when promised and as promised! From the first phone call to the ladies in the office who couldn’t be more helpful to the onsite planning with Justin explaining the scope of works and how best to achieve it-it has been a great experience with professional tradesmen and a genuine business! You don’t get this everyday!Thanks to all for your tireless efforts; welcome back anytime!

Kathy Reed

06:33 01 Oct 25

Justin and the team were a great find to help fit our campervan with a compliant gas set-up. Prompt replies, amazing service and follow up assistance. Would highly recommend and definitely use for other services in the future. Thank you so much.

Haydn Bridge

02:28 20 Sep 25

I had water ingress in my sub-floor from a retaining wall. Xpedite designed and installed a subsoil and surface drainage solution. They came out on time, communicated well through and did a very neat and tidy job. It’s poured rain since and the drainage is working 10/10. Highly recommend!!!!

Greg Simms

19:18 19 Sep 25

Turned up on time. Job done over two days. Very courteous and good workers. Would have them back for other drainage jobs.Thanks Justin.

Alex Doyle

03:12 19 Sep 25

Have used Xpedite plumbing 3 times now for quite large home projects. Installation of water tanks and 2 different drainage projects. Each time they have planned with me so that I could do some of the digging needed and save myself some money and then they’ve come in and done a perfect job on the technical stuff. I found all the tradies that turned up to be polite, helpful and cheery.I have literally just given their phone number to my next door neighbour as she mentioned she is having trouble getting quotes for jobs!Well done to all staff at Xpedite plumbing

Belinda Stow

07:19 31 May 25

Justin was amazing. Squeezed us in to try and help us out as we are travelling. Told us we need a part that he didn't have but rang ahead to another place in Coffs Harbour and told them our issue and they got us in in a couple of days to hopefully fix asap.

Deborah De Bresser

07:12 25 Mar 25

Xpedite came to our rescue with a major leak. Professional, polite, clean and they kept us informed every step of the way with our unfolding situation. Blake, Bryce and Jayden were the ultimate tradie team. Thank you

Alex Doyle

09:20 01 Nov 24

Had these guys install two rainwater tanks under the house and streamline a bunch of other plumbing. They were friendly, prompt, explained what they were doing and why and then tidied up when they finished. I definitely recommend

David Oswald

22:37 11 Sep 24

We had a moderate leak under concrete at our house. The Expedite plumbing team arrived with the right specialist equipment, persistent experienced troubleshooting and a great attitude. I am very pleased with how the leak source was found and repaired. Highly recommend this mob

Shane G

05:16 30 Aug 24

If you are looking for a plumber, I thoroughly recommend Expedite Plumbing and Gasfitting. Very happy with the work they did for me. I was concerned about my water tank and how leaves could get into the system from the guttering. I had no easy way to clean them out and thought they could become a problem in the future. I spoke about my concerns to Justin and he offered some solutions. I had a pit and first flush diverter installed to my water tank and I am now confident that I can keep the system clear of debris. The work they did was top notch and I could tell that they took pride in what they were doing and did not cut any corners. I was very happy too with the quotation as it provided a detailed description of the job and the scope of the work. The attention to detail was excellent. Also, I was very happy with the level of communication. They were very responsive to my messages and I knew exactly what was going on and when. If I ever need a plumber again, I know who I will be calling.

Jemma Calavassy

23:07 03 Jun 24

Justin and his team are amazing. Very professional and always reliable. Highly recommend.

Vicki Smith

01:50 15 Mar 24

Xpedite Plumbing & Gasfitting are very good to work with first part of job was done within 1 day 2nd part will be within a couple of weeks. Can't be done until Granny Flat arrives.

Michael Craig

22:27 06 Mar 24

I highly recommend Xpedite Plumbing. They are a professional plumbing company and do a great job. They replaced over 13m of terra cotta stormwater pipe with 100mm pvc and dug the trench the old fashioned way with spade and shovel instead of using an excavator. (No damage to existing lawn). From supplying the quote to carrying out the work they were a pleasure to deal with. The icing on the cake were the 2 friendly plumbers and their workmanship in doing a fantastic job. Thanks Justin and the team.

Amy Northcote

01:12 16 Oct 23

My main sewer pipe broke and they were Quick, reliable and reasonable priced.Definitely choose these guys for you plumbing needs

Lynn Jones

11:24 17 Sep 23

Cheryl Rawson

23:02 02 Jul 23

Easy to communicate with and all work done professionally

MINXxx Sensual Erotic Boutique

04:36 12 Apr 23

5 Star service,turned up same day called, professional work completed...

Mjanchen Glover

00:40 20 Feb 23

It’s in an emergency like ours that the gold star service that you offer is so hugely appreciated

Darren Farnham

05:52 20 Jan 23

Great job recently to disconnect services for knock down. Thanks Justin

Kerry Ohearn

22:37 16 Jan 23

I’ve had Justin and the boys at home for 3 different jobs now and each time the crew r professional and efficient they do a fantastic job thankyo

Heidi Seymore

22:07 05 Oct 22

I highly recommend Justin & his team. They provide excellent service and great communication! Will certainly be using them for any further plumbing needs.

kazs9922

07:42 20 Jun 22

I had a hardwood bathroom vanity, a sink and a mixer tap fitted and the old vanity removed.I would give this company ten stars if I could. I have not had a better experience with tradespeople. The timeliness was exceptional, the quality of work and attention to detail was second to none and the workers were polite, invested and tenacious. I would recommend them to anyone looking for quality professional work.

Alison Hadley

07:02 09 Jun 22

Justin & the boys worked hard finding the sewerage line to my property, it was a big job finding the pipe & connecting everything needed to complete the job.Also great work done supplying & installing my new hot water service, plus fitting shower &bathroom taps & plugs needed so I could finally have a shower.Appreciated, & Thankyou 👍

Helen Trivett

12:28 01 Jun 22

My laundry and backyard would always flood every time it rained. Justin came and put drainage, down pipes, drainage pits.My laundry hasn’t flooded at all, all excess water runs off, and under house is nice and dry.Justin was professional, prompt and went above and beyond to make sure my property would stay dry.Highly recommend.👌👌👌👌

Clive Jones

00:48 01 Jun 22

The team worked efficiently and were polite. The fixed the problem with no dramas and left the place tidier than they found it.

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How We Work

No guesswork. Just the right fix. We identify the cause first, then build the solution to last.

Inspect + Investigate

On-site assessment with photos and CCTV where required.

Design + Scope

Drainage design and clear scope of works with the best path forward.

Install

Stormwater, pits, charged systems, subsoil drainage — neat and compliant.

Test + Commission

Water test, flow confirmation and performance verification.

Handover

Photos, notes, maintenance guidance — tidy and documented.

Book an Assessment View Stormwater Projects

Book a Stormwater Assessment Today

Best for: persistent water ingress, yard flooding, or unknown stormwater faults.

What you'll receive:

Findings and recommendations
A detailed scope of works
A drainage design approach that matches your site constraints
CCTV inspection of stormwater pipelines (where required)
Pipe location and identification of existing infrastructure

Ready to stop the flooding?