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World First Tank Gutter Technology

The all-new next generation, Australian designed and manufactured EvaRain Circular Tank Gutter System is unique in its ability to collect close to 100% of the rain from the roof of your rainwater tank, without compromising on the quality of the water collected.

Our tanks are supplied with a free access hatch, 50mm brass outlet with ball valve, overflow pipe and a 370mm leaf basket as standard. The upgrade kit includes the new gutter, external ladder and extra 50mm brass with outlet ball valve.

If you would prefer, we are also offering the following alternative options:
Original Gutter System
50mm Outlet with Metal Ball Valve
Removable Ladder

To talk to one of our Sales Advisors, please email call our free-call number 1800 115 552.

* Not available with any other offer, special conditions apply.

Australian patent application 2019903359

Benefits of the EvaRain Gutter System

The Gutter System is like no other product on the market and has been registered to receive a Patent via IP Australia.

The optional EvaRain System protects your water supply by screening the water before it enters your tank via the gutter.

The new system has the benefit of being able to flush the first rains from the roof of the tank, via a specially designed inlet system and incorporates a series of inlet fittings with a sump and mesh filter system.

Simply by turning the filter mechanism to the 'off' position, the first rains can manually and simply be directed outside of the tank, to ensure that no small debris or leaves can enter.

When the first rains have passed and your tank roof is clear, the filter can then be switched back to engage with the inlet valve and divert rain back inside, ensuring that none of your precious rainwater is wasted.

The system will collect up to 25,000L of additional water each year, depending on the rainfall zone in which you live. (Based on a 110,000L tank and an average 500mm rainfall)

Managing Your EvaRain System

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Gutter System Harvest Calculator

With the Gutter System installed on your water tank, you can harvest almost all of the rainfall from the roof of your tank. Your tank will fill by the amount of rain that your receive. i.e. if you have 20mm of rain, the tank will fill by 20mm.

Using an example of a 100,000 litre tank (7.8m diameter), in a rainfall area of 750mm per year, you will collect up to an extra 35,000 litres each year. This can equate to three tank loads of water per year. The alternative is to buy this water commercially, with a potential cost in excess of approximately $1,500 per year (depending on the area where you live). This would more than cover the one-off cost of purchasing the gutter system itself.

Find out how much extra water you could with our water collecting gutter system, using our handy calculator below.




Rainwater harvested from house and/or shed roof:

0 L / Annum

Plus extra collection from optional tank gutter system:

0 L / Annum

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Total Annual Rainfall Collection

0 LITRES / Annum

Water Tank Gutter Calculator

Additional rain water harvested   

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Gutter Catchment Chart
Litres harvested
Vermin Tank Seal

Heritage Water Tanks uses a polyurethane foam product that creates a seal between the top of the tank wall and the roofing sheets. Under compression the product fills the
space created by the corrugations of the tanks roof steel. This creates a weather-proof seal that prevents dust and insects from entering your tank. The vermin seal is quickly and easily installed during the construction of your tank and can be retrofitted to most tanks if required.

Water Tank Vermin Seal_5x4

The BOM is hedging that there will be a La Nina weather pattern this Spring, with the likelihood being 70% higher than...

Posted by Heritage Water Tanks on Tuesday, August 25, 2020

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