Promax
View Build Range

Water storage, rain harvesting, septic and wastewater solutions for homes and building projects across New Zealand.

View Build Range
View Civil Range

Liquid transport, dust suppression and site water management solutions built for demanding site conditions.

View Civil Range
View Industrial Range

Engineered liquid storage solutions for industrial sites, processing plants and specialised applications.

View Industrial Range
View Rural Range

Water storage and liquid management solutions for farms, lifestyle blocks and rural properties.

View Rural Range

Easy to specify

Whether you’re storing water, harvesting the rain or installing septic tanks, Promax has a liquid storage solution that will fit your construction site.

Easy to install

Whether you’re storing water, harvesting the rain or installing septic tanks, Promax has a liquid storage solution that will fit your construction site.

Built for purpose

Whether you’re storing water, harvesting the rain or installing septic tanks, Promax has a liquid storage solution that will fit your construction site.

Trusted Across New Zealand

Built on Experience

From rural properties to industrial sites, Promax delivers proven solutions backed by local expertise and nationwide reach.

530+
Projects Delivered
Specialised solutions across industrial, commercial, and infrastructure applications.
4,500+
Customers Across New Zealand
Supporting rural, build, civil, and industrial customers nationwide.
55+
Promax Team Members
Experience across manufacturing, sales, and service.

Trade & Specifier Portal


Access our full library of technical resources in one place. Log in to download product specifications, installation guides, drawings, and more. Everything you need to specify and install Promax products with confidence.

Need Help Choosing the Right Solution?

Send us a few details and our team will point you in the right direction.

Whether you need help choosing the right product, understanding your options, or finding the best solution for your project, we are here to help.

If you would like to speak with our team, call us on 0800 77 66 29.