Bushmans 3100L septic tank is an Australian-made durable solution designed for long-term wastewater management. This poly septic tank is engineered to withstand the structural demands of underground installation, and requires minimal maintenance. For larger properties where a municipal sewer system connection is not an option or is limited, our poly septic tank provides a cost-effective, reliable solution built to go the distance.
Household Suitability
The 3100L poly septic tank model is specifically designed for larger households/properties between 4-6– people. Its increased volume allows it to manage higher daily waste loads efficiently, providing the necessary buffer for busy residential or rural sites. If you are looking for a smaller system for a cottage or minor dwelling, delivery across NSW & QLD.
Certification & Compliance
To ensure total peace of mind, our poly septic tanks, including the 4,550L septic tank, are manufactured to exceed strict AS/NZS 1546 standards (final certification pending). This compliance ensures that our poly septic tanks meet the rigorous health and environmental regulations required for installations throughout NSW & QLD.
- Best suited for: Large residential blocks, rural properties and off-grid applications in NSW & QLD
- Installation: In accordance with state legislation and to protect your guarantee, this septic tank must be installed by a licensed plumber
- Approvals: Before starting your project, you will need to obtain local council approval, as each region varies with regulations
Key Specifications
- Capacity: 3100L
- Material: UV-stabilised, high-density polyethylene (corrosion-resistant)
- Dimensions: 2470L X 1640W X 1700H
- Design: A self-anchoring one piece tank with lifting lugs, making it lightweight for easy transport, and simple moveability on-site
- Warranty: 10-year manufacturers warranty
- Please refer to the technical drawing for specific dimensions, and required installation clearances for your site
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Free Delivery Across Central Coast
We proudly offer free delivery of our poly round rainwater tanks across Central Coast, including Newcastle, Western Sydney, and surrounding areas. Your new tank will be delivered with care by our expert and customer-focused transport professionals, ensuring it reaches its final location with ease.
Celebrating 30 Years of Excellence
For 30 years, Central Coast Water Tanks has led Australia’s rainwater harvesting revolution. Our experience spans from the early days of corrugated steel tanks to today’s advanced poly water solutions. Trust our unmatched expertise to help you select the right tank for your home, farm, or business.
As a family-run business, we offer our products at lower prices than many competitors, ensuring exceptional value without compromising quality. Remember, not all tanks are created equal.
Our poly water tanks are available in various shapes, sizes, and colors to suit different applications. From small 600-litre slimline tanks to large 46,000-litre round tanks, we cater to a wide range of needs, including underground and under-deck solutions.
For personalized attention and expert advice on the right tank, contact us at 0407 002 833 for a free, no-obligation quote.

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