How to Set Up a Wastewater Treatment System

21 May 2025 / Wastewater Treatment Systems

What You Need to Set Up a Wastewater Treatment System

If you’re building on a block without sewer access, or you’ve just taken over a property with an older septic setup, sorting out wastewater treatment isn’t something you can leave for later. Councils have strict requirements. At BioSeptic, we supply fully approved wastewater treatment systems – including septic tanks, treatment units, and collection wells. Each part works with the others, creating a setup that keeps wastewater under control and maintenance to a minimum.

What’s Included in a Complete Wastewater Treatment System?

A wastewater treatment system isn’t just one tank buried in the ground. It’s a working combination of products that collect, treat, and safely release household waste. What you’ll need depends on your block size, soil type, and how much water your household uses.
Here’s what we provide:

Concrete septic tanks – handle primary waste separation with natural bacteria
Treatment systems – aerate and filter the effluent for cleaner results
Collection wells – store treated water when it can’t be absorbed on-site

Concrete Tanks that Hold their Ground

The septic tank is the first part of most systems. Ours are built from reinforced concrete, available in sizes from 3550L to 7200L. They’re strong enough to stay put through shifting ground and wet seasons and meet every required standard in NSW.

Here’s How it Works:

Waste enters the tank. Solids settle at the bottom. Liquid continues on to a trench or treatment unit. The design is straightforward, low-maintenance, and works across a wide range of property types – rural homes, farms, and even small businesses.

Treatment Systems for Cleaner Effluent

Some properties need more than a basic tank and trench. Waste water treatment becomes part of the picture if you deal with limited space, sensitive land, or local rules requiring higher water quality.

BioSeptic’s units bring in oxygen and filtration, using aerobic bacteria to clean the effluent before it’s dispersed or reused. It’s a practical way to reduce odour, prevent trench problems, and meet environmental standards.

Aerated wastewater treatment systems are:

Approved by NSW Health
Often required by council regulations
A smart option for compact or sloped blocks where water dispersal is limited

If you need expert advice on the right combination of septic tank, treatment system, and collection well for your property, contact us. We’re here to help you design a system that stays reliable long after installation.

When to Include a Collection Well

Some blocks make it tough to get rid of treated water. Clay-heavy soil, steep gradients, or high water tables can make absorption fields unreliable, especially after heavy rain. That’s where a collection well helps.

BioSeptic offers wells made from concrete and built to safely hold treated effluent until it can be removed or reused under controlled conditions. The wells are often paired with treatment systems to meet local rules and keep things running when the weather or soil isn’t on your side.

Getting the Right Wastewater Treatment System for Your Land

Across NSW, our technical support teams have seen how differently sites behave – and how much that matters when setting up a wastewater treatment system. Some blocks have deep, sandy soil and space to spare, so a basic tank and trench work fine. Others are tucked into hillsides or close to creeks, where runoff and absorption can get tricky.

You might only need a tank. You might need the full setup: tank, treatment system, and a collection well to manage discharge safely. It really comes down to what your site can handle and what your council will sign off.

As NSW Health notes, poor setups don’t just cause odours; they can leach into waterways and damage surrounding soil (NSW Health, 2024). Hence, in the end, solid wastewater treatment comes down to matching the system to the ground it’s going in.

Need Help Choosing your Wastewater Treatment System?

Whether you’re building from scratch or just fed up with trench problems, call BioSeptic at 1300 658 111 or send us a message here to talk with our team. We’ll help you find a septic tank, treatment unit, and collection well that works for your site – so your wastewater treatment stays reliable for decades.