Premium water and liquid storage solutions for every sector
Promax is a New Zealand manufacturer of high-performance water tanks and engineered liquid storage products trusted by homeowners, builders, farmers, councils and civil contractors nationwide. With over 25 years of experience, we deliver durable, compliant and fit-for-purpose solutions built for New Zealand’s tough and varied conditions.
Our team designs and manufactures products that support projects of every scale, from small residential builds through to large civil and industrial installations. Consistent quality, technical accuracy and dependable service sit at the centre of everything we do.
Trusted manufacturing and engineering
We operate advanced manufacturing facilities with rigorous quality control and locally focused engineering. This ensures:
Reliable supply across the country
Consistent product performance
Compliance with New Zealand standards
Fast turnaround on custom requirements
Every Promax product is shaped by real-world feedback from contractors, builders, rural customers and industry specialists, ensuring our solutions are practical, durable and easy to install.
Supporting four key sectors across New Zealand
RuralPromax helps rural customers secure dependable water supply for household, stock and rain harvesting needs. Large Enduro corrugated water tanks |
BuildBuilders, architects and plumbers trust Promax for products that meet compliance requirements and suit modern building constraints. Slimline water tanks for tight urban spaces |
CivilOur engineered products support councils and civil contractors needing robust performance and verified compliance. Stormwater detention and retention systems |
IndustrialIndustrial operators choose Promax for durable solutions that withstand demanding environments and specialist applications. Transport tanks for water and chemicals |
New Zealand’s choice for quality and service
Merchants, trades professionals and major project partners rely on Promax because we combine strong products with responsive support. Our approach includes:
National customer service and technical assistance
Sales teams dedicated to Rural, Build, Civil and Industrial customers
In-house design guidance for complex requirements
Stock held across both North and South Island facilities
We are committed to delivering solutions that last, with the strength, safety and performance that New Zealand customers expect.
Partner with Promax
Whether you are upgrading water storage at home, specifying a subdivision, managing a civil project or sourcing robust industrial equipment, Promax provides dependable products backed by local expertise.
Choose Promax for quality you can trust, service that supports your project and solutions built for New Zealand conditions.
Our articles
Maintenance, Troubleshooting & Handover | Using Rainwater at Home
7 Nov Once a rainwater reuse system is installed, keeping it reliable comes down to regular inspection and following the Operation & Maintenance guidelines provided with the tank.
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