Practical, plain-language guidance on choosing, installing and maintaining water storage, written by the Promax team.
Stats NZ figures show rainfall falling across successive five-year averages, and Northland recorded just 64% of its average annual rainfall in the year to June 2019. Harvesting rain gives you water the council cannot charge you for and cannot restrict.
Read the guidePromax's 1,000 litre Slimline tank is 31 centimetres wide and the same height as a fence, so it collects rainwater on sections too small for a round tank. It is stormwater compliant and every Slimline includes a built-in seismic restraint.
Read the guideLead times, raw material prices and drought all push in the same direction: buy the tank before you need it. Promax's answer was the Promax Promise, which locks in the delivery and the original price.
Read the guideConcrete and asphalt stop water soaking into the ground, which drives runoff, cuts groundwater recharge and carries pollutants into waterways. Dual purpose tanks tackle it by doing detention and retention in one tank, which also satisfies SMAF controls.
Read the guideGreywater reuse puts water back into jobs that never needed drinking quality in the first place: toilet flushing, laundry and irrigation. Here is what it saves, and where a Slimline tank with a built-in pump and changeover device fits.
Read the guideEven the smallest Promax tank can provide thousands of litres of water every year. Capacity is only a guide: a tank that keeps refilling punches well above its size.
Read the guideFour accessories keep rainwater clean in two stages: filtering debris before it reaches the tank, then drawing from the cleanest layer inside it. Here is what each one does, and which pair matters most.
Read the guideRoof to tank, tank to pump, pump to changeover device: how a rainwater reuse system is plumbed, the backflow prevention it needs, and what a council wants documented.
Read the guidePart of the Using Rainwater at Home series. How to match a pump and changeover device to the house, and when a pre-plumbed tank and pump combo is the simpler option.
Read the guideKeeping a home rainwater reuse system reliable: the routine checks, the signage that matters, how to diagnose the common faults, and what a good handover includes.
Read the guideWhat happens when your rainwater tank runs empty? A changeover device switches the house to mains and back without you touching a thing. Part one of the Using Rainwater at Home series.
Read the guideThe cleaner the water going into your tank, the less often the tank itself needs cleaning. This covers inlet filtration, the in-tank accessories that keep the floor clear, hiring a professional, and how to clean a tank safely yourself.
Read the guideBrowse Promax tank categories for residential, rural, commercial, and specialised applications.
Durable above-ground water tanks for rural, residential, and commercial storage.
Underground water storage for sites where space, access, or visibility matters.
Narrow-profile tanks designed for homes, boundaries, and other restricted spaces.
Specialised tanks for demanding commercial, industrial, and process applications.
