Looking for a plastic water tank for rainwater collection, irrigation, stock water or firefighting?

You've come to the right place. Here at Rural Water, we stock the largest range of the best quality plastic water tanks in the country. All our tanks are manufactured right here and can be delivered nationwide.

Rural Water Makes Your Water Tank Decision Easy.

To make your tank decision easy, we have created a free quote that simply communicates all your best options. This quote compares all the important details like delivery times, prices, warranties, dimensions, shipping costs, and installation differences between all the different tanks. It's all there in one simple document, making it easier for you to make the right plastic water tank decision for your site.

The Leading Brands: A Closer Look

Devan Plastic Water Tanks

Devan has been manufacturing one of New Zealand's most reliable and competitive tanks for over 30 years, and every tank comes with a full 20-year warranty. A real game-changer is the ability to bury Devan tanks up to 1 metre, making it the deepest smooth-wall option on the market today. All of their tanks feature brass outlets moulded in during manufacture, with tanks over 10,000L sporting two 50mm brass outlets. Plus, Devan provides free delivery to all mainland addresses nationwide across their entire above-ground tank range and can give you an estimated delivery date once your order is confirmed.

• Can provide an estimated delivery date once order is confirmed. Known for their fast delivery times. 

• Full 20 Year Warranty.

• Bury up to 500mm deep with clean backfill. Or 1000mm using 500mm of clean backfill and a top layer backfill being bark.

• Super tough dome - with space frame substructure.

• Slimline range to suit smaller spaces.

• 11 standard colour options available.

• Extensive range of water tank accessories.

• Need a tank to meet rural firefighting regulations? Devan has three sizes available in their Fire Tank range: 15,000L, 25,000L & 30,000L, with both Static and Dual fire/potable water combinations.

RURAL WATER RECOMMENDS DEVAN: If you need unmatched durability, a full 20-year peace of mind, and the deepest burial depth for a smooth-wall tank, you simply can't look past Devan. It’s the reliable, rock-solid choice for long-term water storage.

RX Plastics Plastic Water Tanks

RX Plastics have been producing quality plastic water tanks for nearly 30 years, and all their water tanks come with a full 20-year warranty. All tanks over 3,200L are delivered free to all mainland New Zealand addresses. A real standout when working with RXP tanks is the flexibility for your installer to easily install extra outlets into the standard tank range. This even includes the 100mm Fire connection kit if you need to meet rural fire standards for council consent. This is a smart way to keep costs down and set up the tank layout to what best suits your site.

• Full 20 Year Warranty.

• Strong designed dome.

• Engineered tapered wall design for strength.

• Easy to install extra outlets.

• 8 standard colour options available.

• Extensive range of water tank accessories.

• Fire fighting tanks available with specifically designed fire fighting kits.

RURAL WATER RECOMMENDS RX PLASTICS: If you’re after installation flexibility. If your site needs a custom outlet setup or you want to give your installer an easy job with fire connections, the RXP tank is engineered to adapt to your needs without fuss.

Promax Plastic Water Tanks

Promax produces the Enduro Water tank, said to be New Zealand's strongest plastic water tank designed with corrugated sides for extra strength. All tanks have free shipping to either your site or local Mainfreight depot, except for 5,000L and under tanks in the South Island. Promax tanks provide a 20-year pro rata warranty, which means your tank is covered, but replacement or repair costs will be adjusted based on the tank's age at the time of failure. The good news is, their flagship corrugated Enduro tank can be buried up to 1 metre with clean backfill.

• Can provide an estimated delivery week once order is confirmed.

• The Enduro water tank is designed with corrugated side walls for extra strength.

• The corrugated Enduro Promax tank can be buried up to 1m with clean backfill, while Promax’s Express Tank Model with smooth walls cannot be buried.

• 20 Year pro rata warranty.

• Multiple inlet/outlet panels.

• 7 colours available for Enduro range, 2 colours available for Xpress range.

• Water tanks are suitable for fire fighting purposes.

RURAL WATER RECOMMENDS PROMAX: When strength is non-negotiable, you need the Promax Enduro. With its corrugated design, it's engineered to be New Zealand's toughest plastic tank. For maximum resilience and deep-burial capability in a corrugated model, Promax is the power player. 

Aqua Plastic Water Tanks

Aqua Tanks are only available in the North Island only and provide an affordable tank option. Aqua tanks have a 20-year pro rata warranty on tanks above 10,000L, meaning coverage is based on the tank's age at the time of failure. Tanks 16,000L and above can also be buried 700mm deep.

• 10,000L – 31,000L Aqua Tanks have a 20 year pro rata warranty.

• 295L - 5,000L have a 10 year pro rata warranty.

• All tanks 16,000L and above can be buried 700mm deep.

• 11 standard colour options available.

RURAL WATER RECOMMENDS AQUA: For North Island buyers focused on getting the most affordable quick option, Aqua Tanks are the smart, budget-friendly choice. They deliver solid capacity and burial depth, making reliable water storage highly accessible.

Chat to the Rural Water Team. Water Tank Experts. 

Does one of these brands already sound like the perfect fit for your needs, or should we work through the quote details to find the absolute best option? Please contact the team to talk through your best option. We’re here to help.