Water Tanks NZ | Large Plastic Water Tanks

Save 30% on Underground Tanks

Upgrade your stormwater management with our top-quality Underground tanks. Enjoy 30% off and keep your projects on track.

Save 30% on Slimline Tanks

Upgrade your water management system with our high-quality Slimline tanks. Enjoy 30% off and ensure compliance with ease.

Solutions for fire protection

Safeguard your property

Save up to 30% on Water Tanks

Reliable water supply, easy compliance, and durable solutions at the best prices.

Save 30% on Septic Tanks

Don't miss out on our summer special! Get 30% off septic tanks and ensure effective wastewater management.

Whatever the sector, whatever your project, there’s a Promax Liquid Management solution made for the job.

Promax is a leader in Liquid Management – giving you solutions others can’t.

Get what you need, when you need it with Promax.

Choose Promax for durability and reliability.

Talk to us about our customised solutions.

When the going gets rough, Promax gets going.

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B2/AS1 Requirements for NZ Building Projects

3 Mar Ensuring Durability and Compliance in New Zealand Construction: Meeting B2/AS1 Standards for Long-lasting Building Projects When it comes to building projects

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ENDURO Underground Tank 3,000 Ltr 1.0m

Save 30% on Promax ENDURO Underground Tanks during our Summer Sale!

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