How to Decide What Styel of Water Tank Is Best Suited For Melbourne, Vic

There aren’t many consolations to a rainy day– cosy lounge time, soothing sounds of drops on the roof, and perhaps a rainbow or a puddle-splash afterwards. But you can add yet another by installing a water tank to capture a bit of that downpour: it’ll reduce your environmental footprint by reducing your demand on mains water and the volume of stormwater runoff into rivers and oceans, and can also trim your water bill in the long term.

Rainwater tanks are no longer just huge, round and bad-looking; they can be found in all shapes and sizes that can make efficient use of modest or tricky urban spaces.

Water for outdoor or indoor use?

The most important issue to consider before you purchase and install a water tank is how you wish to use the water.

Applying the water outdoors– for watering the garden and washing the car, for example– is the best way to start, as you most likely just need the supplier to set up the water tank, instead of a licensed plumber. And it will promptly cut your usage of mains water.

Save even more by sending the water to your toilet, washing machine or water system, but you’ll need a licensed plumber to connect the water tank to your mains supply.

What size rainwater tank do I require?

The volume you choose will depend on the shapes and size of your household and garden. Round, squat tanks fit well under a deck, while slimline rainwater tanks tanks agree with narrow spaces. An underfloor tank or bladder storage system is a good out-of-sight space saver, however is more expensive.

Your roof area and the annual rainfall in your area will also need to be considered. To help determine the size and shape that’s correct for you, sellers often provide calculators on their online sites, or your water authority may be able to help.

What else do I need to understand before acquiring a rain water tank?


Rainwater tanks usually are available in the following materials:

Metal tanks are made from corrugated or flat rolled metal, which might be galvanised or coated. They often incorporate a plastic inner lining (Aquaplate) that will enhance the life of the tank and protect the water quality.

Polyethylene (plastic) tanks are prominent as they are reasonably cheap and durable. Because rust isn’t a conern, they are a good option for people living near the sea. Other synthetic materials, such as PVC and geotextile, are utilized for bladder storage. Bladders are useful for water storage below a deck or floor; while their material is strong, it’s not intended for outdoor installation.

Fibreglass tanks are rust and chemical-resistant and manufactured to withstand extreme temperature levels. They’re not the cheapest solution, and preferable for above-ground installation, while all other types can also be set up below ground.

Concrete tanks, more frequently used for agricultural and industrial intentions, won’t rust, burn, melt or blow away. They might be bought ready-made, or customized onsite.


Ask your local area council and water supplier which rules and regulations apply in your area. You may need to submit a development or building application, and there may be policies around drinking rainwater or mosquito breeding prevention, in addition to restrictions on the tank’s location, colour, height and labelling or noise regulations for a pump.

Are you remodeling, building new or retrofitting?

If you are refurbishing or building, rather than retrofitting, you may need to incorporate energy and water-efficient elements in your plans to observe new legislative requirements.

Extra expenses

When acquiring quotes, inquire if there are any supplementary costs for delivery and installation; extra components (such as pipes, fittings and taps); alternative extras (such as a first-flush or backflow-prevention device); a pump (unless you can work with gravity for water pressure); and a stand (unless you would like to put it on the ground or below it, by which case you’ll need to look into the cost of special ground prep or excavation).

If you intend to connect the tank to your mains water system, think about the cost of a licensed plumber, and charges for any supplementary work that needs to be done to your roof and/or guttering.

Can you obtain a water tank rebate?

Get in touch with your local water or government authority to see if you’re entitled to a cash discount or bill reduction– the answer may hinge on the size of the water tank and whether it’s connected to a toilet and/or washing machine.


Rainwater tanks can range from around $700 to $2000, beginning with a small, freestanding model without pump or extras, to large, custom-built models. Costs vary depending on the size, material, finish and strength of the tank.

Author: judeanstey

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