Rainwater Tanks # water tank suppliers # concrete rainwater tanks

Underground Rainwater Tanks by Building Gear

At Building Gear, we sell premium underground rainwater tanks with your safety, convenience, and long-term value in mind.

✅ Safe, Strong & Easy Access

Our tanks are equipped with a lockable, three-stainless-bolt access cover featuring:

A watertight seal
Lightweight design (only 9.5kg)
600mm clear opening for easy access and maintenance
Load tested to 1.5 tonnes
Adjustable turret heights allow for optimal inlet depth and safe installation in light traffic areas.

💧 Smarter Water Harvesting – No Charged Downpipes

We use a variable turret height system to position your tank for maximum fall. This eliminates the need for charged downpipes, reduces pipe sediment build-up, and ensures every drop of rain is efficiently collected.

🌱 Out of Sight, Out of Mind

Our tanks are installed flush with the ground, making them perfect for placement under driveways, gardens, or other outdoor spaces — completely hidden, yet highly functional.

🚫 Clean & Protected Overflow System

Each tank includes a full-flow flap valve on the overflow outlet. This:

Prevents contaminated backflow
Blocks vermin
Does not restrict water overflow

🛠 Built to Last

Our tanks are wet-cast individually from 40MPa steel fibre reinforced concrete and comply with AS1546.1 standards — ensuring exceptional strength and durability.

🦟 Cleaner Water, By Design

A 1mm stainless steel mosquito-proof leaf filter ensures only clean water enters the tank. Plus, our construction bypass keeps debris out during site work and is removed when construction is complete.

⚖️ Anti-Floatation for Peace of Mind

Our 10,000L tanks include retention concrete to prevent tank flotation — saving time, hassle, and installation costs.

📞 Contact Us Today

Future-proof your property with a smarter rainwater solution.

Call us: 0494 393 682
Email: sales@buildinggear.com.au

We're here to help with expert advice, installation, and support.

MEDIUM AND LARGE SIZE WATER TANKS AVAILABLE

Medium or large size water tanks available

We have 6,100 litre medium size water tanks or 10,000 litre large water tanks. Suitable for above or below ground water storage. Our 10,000 later water tank has the capacity to harvest large volumes of rainwater, maximising rainwater harvesting for extended supply in long dry periods.The medium tank is suitable for a wide range of geographical profiles and provides a good balance between size and capacity. This is our most popular and economical tank.

Inter connecting tanks increase storage capacity

As house blocks become smaller and regulations on water usage become tighter Building Gear offers a reliable way to store natural rainwater for your home that takes up no extra space in your yard. By installing our Inter Connecting Water Tanks you can maximise your garden space while reducing your water bills and minimising the drain on the water supply.