5.0★★★★★
70+ Google reviews
Septic Tank Installation in Brisbane & Gold Coast, Approved First Time
From soil testing and council approval to excavation, installation and final sign-off, our licensed plumbers handle the entire job so you don't have to.
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About Us
Your local, family-owned wastewater specialists
Parallel Plumbing & Gas is a family owned and operated business based in South Brisbane. We specialise in septic tanks and wastewater systems for homes and businesses across South-East Queensland, from small residential jobs to large semi-rural installations.
Our approach is simple: clear communication, quality workmanship, and solutions tailored to your property. We arrive with fully equipped service vehicles, handle everything from soil testing to council sign-off, and make sure every system meets Queensland's compliance standards.
Our Process
From first call to final sign-off
Recent installations
Real jobs across Brisbane, Gold Coast and surrounds.
"Ben from Parallel Plumbing & Gas was great to deal with, great communication, honest and quality workmanship. We will definitely call on him again when needed and will recommend him to anyone that needs that plumb thumb."
Ben Gordon, Google review
Free Site Assessment Guarantee
We inspect your site, check the soil and give you a fixed written quote, free, and with zero obligation to go ahead.
Book My Free AssessmentWhy Parallel Plumbing & Gas
The local team that does septic properly, start to finish
One licensed team handling everything, so you get a compliant system, a fixed price, and no run-around.
We Know Your Council
Every council expects something different. We know the requirements across Brisbane, Gold Coast, Logan and Ipswich, and get your system approved first time.
Clear, Honest Advice
Plain language, upfront fixed pricing, no hidden extras and no pressure, just straight answers so you can make the right call for your property.
One Team, Whole Job
Soil testing, design, approvals, excavation, installation and certification, managed end-to-end by one licensed team. No juggling trades.
Built to Last Decades
A properly installed and maintained septic system can run for 20 to 30 years or more. We install it right the first time, then keep it that way.
Where We Work
South-East Queensland's septic specialists
Based in South Brisbane, we install and service septic systems across the region, including rural and semi-rural properties.
Common questions
Need a septic tank installed? Let's chat.
New build, rural block or upgrading an old system, call now or request your free site assessment and fixed quote.