One-liner for the photo: Engineer-designed concrete septic tanks, manufactured in South Australia for nearly 80 years
Concrete septic tanks built to last
At Ri-Industries, we deliver on quality every time. Whether it’s our concrete rainwater tanks, wastewater treatment systems, or concrete septic tanks, we only produce the best. With a focus on building products to last, even our replacement concrete septic tank lids are engineered to perfection.
Key facts
1,620-20,000 litres
Range of tank capacities
40 MPa concrete
For strength and durability
Multiple configurations
Horizontal and vertical options
Why choose a Ri-Industries concrete septic tank?
- Engineer-designed and built using precision steel moulds
- Manufactured from 40 MPa concrete for strength and durability
- Internal joints are sealed to minimise the risk of leaks
- Available in a range of sizes and configurations
- Trafficable options available for suitable applications
- Child-proof and vandal-proof concrete lids for added safety
- Manufactured locally in South Australia
Concrete septic tanks for South Australian properties
The size and type of septic tank you need will depend on factors including the property, number of people using the system, site conditions and local approval requirements.
Ri-Industries manufactures septic tanks in a range of capacities, from 1,620 litres through to 20,000 litres, including horizontal, vertical, trafficable and non-trafficable options.
Installation and design of septic systems in South Australia are regulated by SA Health, with local councils providing information and approvals specific to individual properties.
More about our septic tanks
Specifications
View the range of Ri-Industries septic tank sizes and configurations, including horizontal, vertical, trafficable and non-trafficable options. Read more »
Installation
Correct site preparation and installation are important to the long-term performance of your septic tank. View information about excavation, base preparation, backfilling and installation requirements. Read more »
Maintenance
Find out how to look after your septic system, including desludging requirements and what should and shouldn't be put into a septic tank. Read more »
Frequently asked questions
What size septic tank do I need?
The right septic tank will depend on factors including the number of people using the system, the property, site conditions and local approval requirements. Ri-Industries manufactures septic tanks in a range of sizes from 1,620 to 20,000 litres. Speak to your plumber or the Ri-Industries sales team about the right option for your property.
Why choose a concrete septic tank instead of a plastic septic tank?
Concrete septic tanks are strong, durable and stable underground. Their weight helps reduce the risk of the tank shifting or floating in changing ground or groundwater conditions, while reinforced concrete is designed to withstand the pressures associated with underground installation.
Ri-Industries concrete septic tanks are manufactured from 40 MPa concrete and are installed on a prepared base before being backfilled with approved granular material, such as sand, compacted in 150mm layers in accordance with the installation requirements.
Concrete tanks are heavier and require suitable access and professional installation, but once correctly installed they provide a strong, stable long-term solution.
Read our article: Concrete vs Plastic Septic Tanks
Are concrete septic tanks safer than plastic tanks?
The weight and strength of a concrete tank can provide advantages once it is installed underground. Ri-Industries septic tanks also have child-proof and vandal-proof concrete lids for additional safety and peace of mind.
The appropriate tank and installation will depend on the site, and all septic systems must meet applicable SA Health and local council requirements.
Can a septic tank be installed under a driveway or trafficable area?
It depends on the tank. Ri-Industries’ horizontal septic tanks should not be installed in trafficable areas. If a trafficable septic tank is required, speak to Ri-Industries about the appropriate vertical tank and cover option.
When can't you install a septic tank?
Not every site or tank configuration will be suitable for a standard septic tank installation. Factors such as site conditions, available space, required burial depth, vehicle traffic and local wastewater requirements can affect what can be installed.
Septic system installation and design are regulated by SA Health and require local approval. Speak to your plumber, local council or Ri-Industries before ordering if you are unsure whether a septic tank is suitable for your site.
How soon can I get a septic tank?
Ri-Industries manufactures septic tanks at its South Australian facility in a range of commonly required sizes and configurations. Availability will depend on the tank required and current production and delivery schedules, so contact the Ri-Industries sales team to discuss what you need and when you need it.
How much does a septic tank cost?
The cost will depend on the size and type of septic tank you require, as well as installation and site requirements. Contact the Ri-Industries sales team for current tank pricing, or speak to your plumber if they are supplying and installing the complete septic system.
How often does a septic tank need to be emptied?
For an average family of four to six people, a septic tank may need to be desludged approximately every four years, or as required by your local council. The actual frequency will depend on how the system is used.
How long does a concrete septic tank last?
The lifespan of a concrete septic tank will depend on its manufacture, installation, ground conditions, use and maintenance. Ri-Industries has been manufacturing concrete septic tanks since 1947, using engineer-designed construction and 40 MPa concrete for strength and durability.