Dual Purpose Tanks
A dual-purpose tank detains stormwater in its top section and retains water for reuse in the bottom, so the same tank that satisfies the council also feeds the laundry, the toilets and the outside taps.
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Articles | Knowledge Hub
Make Better Decisions About Water Storage
Practical, plain-language guidance on choosing, installing and maintaining water storage, written by the Promax team.
Calculate capacity
Work out the storage you need from your daily water use and the length of your dry period, then check what your roof can actually collect. This covers both sums and what to look for in the tank itself.
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Water Restrictions: Causes, Impacts and Solutions
Water restrictions are now normal across most of New Zealand. What is driving them, how they change life on farms and in cities, and what storing rain does about it.
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Browse Promax tank categories for residential, rural, commercial, and specialised applications.
Water Tanks
Reliable Storage
Water Tanks
Durable above-ground water tanks for rural, residential, and commercial storage.
Underground Tanks
Space Saving
Underground Tanks
Underground water storage for sites where space, access, or visibility matters.
Slimline Tanks
Built for Tight Spaces
Slimline Tanks
Narrow-profile tanks designed for homes, boundaries, and other restricted spaces.
Industrial Tanks
Heavy Duty Solutions
Industrial Tanks
Specialised tanks for demanding commercial, industrial, and process applications.