National Poly Industries

With National Poly Industries you’re buying from an Australian manufacturer of poly rainwater tanks and other products designed and built to withstand harsh climate conditions.

Purchase your water tank from an Australian owned and operated company. With over 20 years experience manufacturing water tanks, we are committed to providing you with premium quality for the best value.

Choose from a wide range of colours, sizes and styles to meet your taste. Our poly water tank sizes range from 1,000L to 37,200L, and are made from food-grade polyethylene to comply Australian tank standards (AS4677).

Benefit from our advanced manufacturing process of computer-controlled rotational moulding machines that produce one-piece water tanks with extra strength.

Get a water tank with optimum strength. Beware of those with inferior structural integrity evidenced by vertical side seams or poles that support the roof.

We offer a wide range of molasses tanks, slimline tanks, underground tanks, troughs, water tank accessories and tank combo packages to save you time and hassle.

The weight of every water tank is stated in writing, providing proof of the strength and integrity of each model manufactured by National Poly Industries.


Duraplas, offer permanent water storage solutions and an opportunity for you to significantly reduce your town water consumption charges. They have an extensive range of styles, sizes and colours that will ensure your selection will complement your home and lifestyle.