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Harvest your own water supply to avoid council restrictions.

Water has become a precious resource. Have you been affected by water restrictions where you have not been allowed to water your garden, or wash your car? Have you thought about an emergency water supply in case of a natural disaster?

The water from the roof of your house, your garage, or your shed, can be easily harvested into a conveniently positioned tank that can then be used around the garden, or as an emergency supply for drinking (if treated) and washing.

We have tanks available in sizes to suit your individual requirements.  Tanks can be inter-connected to provide you with a larger capacity, and installation can include pre-filtering, overflow control, and even an electric pump to create a pressurised water supply.

Have a look around and click the Book a Quote button to request a no obligation free consultation.

625L Emergency Water Tank

Manufactured by The Tank Guy, these discrete tanks are the only tanks in NZ made from food grade plastic. Civil Defence guidelines state that each household should store enough emergency water to provide a minimum of 3 litres per day per individual. These slimline tanks fit virtually anywhere and will provide a great emergency supply for a family.

800L Slimline Tank

Manufactured by The Tank Guy, the most versatile rain harvesting tank available in New Zealand. This tank is designed to withstand earthquakes (so needs no bracing) and can be connected in series to provide a large storage capacity, or for stormwater attenuation and detention. Five slimline tanks will provide the same storage as a single 4000L tank but will fit discretely along a wall.

2000L - 5500L tanks

Larger tanks suited for properties with plenty of space. These Devan tanks are commonly used on lifestyle blocks, or more rural properties, where the water can be used as a supplementary emergency supply of drinking water (with relevant added filtration) or for irrigation (with an added pump).

Gutter cleaning and gutter guard

To capture the best water quality, it is important to ensure the roof guttering is as clean as possible, and free from leaves and other debris. Installation of our unique easy maintenance gutter and valley guard, and a periodic clean of the gutters, will ensure the best water supply possible.

Our gutter guard simply springs into place with no need to permanently screw it you your guttering. This make for extremely easy removal and replacement when cleaning of the gutters is required.

We recommend an annual maintenance clean of your gutters irrespective of whether you have screens installed or not. The cleaner your gutters are, the cleaner your harvested water will be.

Ancillary Items

A rainwater harvesting system can be as simple or as complex as you want it to be. A basic system harvesting unscreened and unfiltered water direct from the roof may be sufficient for some, but additional pre-filtering using a Leaf Eater and First Flush Divertor will dramatically improve the quality of the collected water.

Rainwater collection tanks will not provide enough pressure to run hose pipes or sprinkler systems. If your intention is to store lots of water for use around the garden, the addition of an electric pump will provide a pressurised supply for connection to a standard garden hose or irrigation system. These are readily available in DIY stores and we are happy to plumb one in for you. You will need to have an outdoor electrical outlet fitted by a registered electrician close to the installation.

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FAQ

  • Can I drink the water harvested from my roof?

    Collected rainwater is not classed as potable (drinkable), however it can be made safe for an emergency supply by adding a small quantity of bleach. For every litre of water, adding 5 drops of plain household bleach (with 4% Sodium Hypochlorite) will render the water safe to drink as per guidelines from Civil Defence).  We also have a filtration jug available that can be used to provide fully filtered water which will remove metals, minerals, and bugs.

  • How much water can be harvested off my roof?

    For every 1mm of rainfall, 1sqm of roof surface will provide 1 litre of water. So, 50 sqm of roof directing all its runoff to a single downpipe will catch 50 litres of water for every 1mm of rainfall. Remember that you may have multiple downpipes from your roof, so not all the falling rain will necessarily end up in the downpipe you are harvesting from.

  • Will there be enough pressure from my rainwater tank to run a hosepipe or garden sprinkler?

    The short answer is no unless the tank is very high off the ground. To create a pressurised supply an electric pump can be connected to the outlet of the tank, but this is only practical for larger capacity systems. A hose or garden sprinkler typically uses around 400 litre of water per hour.

  • Do I need special foundations under the rainwater tank?

    Ideally a concrete pad is the best foundation, but concrete pavers set on a compacted base course can also work.

  • What if I need more than 800L of stored water?

    Our 800 litre Slimline tanks can be connected in series for increased capacity.

  • I have tried many types of gutter guard over the years and none seem to work very well. Why is yours different?

    Our Gutter Guard is extremely simple in design and just works. Most professional guards screw to the guttering making it very difficult to remove and replace during periodic cleaning. They also often tuck up under the first row of roofing tiles, or iron, which can void the warranty on the roof. Our GBL gutter guard simply springs into place in 1m sections, so it is easy to do regular maintenance, and does not interfere with the roof at all. DIY products such as  foam or brush, clog up very quickly and are extremely difficult to clean.

  • Will the collected rainwater grow slime inside the tank and cause issues?

    If light is kept out of the tank algae will not grow. Our installation ensure that it is a sealed system.

Book a RainwaterPro quote

For any enquiries regarding your outdoor living spaces, or to request a quote, please enter your details and your local RainwaterPro franchisee will be in touch to arrange an appointment as soon as possible.

If you prefer not to give a full address at this stage feel free to book a quote by phone at the free phone number below.

Note that The ProGroup has strict operational processes in place with regards to Covid 19 and the relevant alert levels.

0508 422 532

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