How to Understand What Kind Of Water Tank Is Most Suited For Melbourne, Vic

There aren’t many consolations to a rainy day– cosy couch time, soothing sounds of drops on the roof, and perhaps a rainbow or a puddle-splash afterwards. But you can add another by attaching a water tank to capture some of that downpour: it’ll diminish your environmental footprint by reducing your demand on mains water and the amount of stormwater runoff into rivers and oceans, and can also slash your water bill in the long run.

Rainwater tanks are no longer just huge, round and hideous; they come in all shapes and sizes that can make efficient use of tiny or tricky urban spaces.

Water for outdoor or indoor application?

Probably the most important issue to consider before you get and install a rainwater tank is how you would like to use the water.

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

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

What size rainwater tank do I need?

The storage capacity you choose will rely on the shapes and size of your household and garden. Round, squat tanks fit efficiently under a deck, while slimline tanks are good for 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 region will also have to be considered. To help determine the size and shape that’s right for you, sellers often provide calculators on their sites, or your water authority may have the ability to help.

What else do I need to identify before buying a rain water tank?


Water tanks typically can be found in the following materials:

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

Polyethylene (plastic) tanks are well-liked as they are relatively cheap and durable. Because rust isn’t a problem, they are a pretty good option for people living near the coast. Other synthetic materials, like PVC and geotextile, are applied for bladder storage. Bladders are useful for water storage below a deck or floor; while their material is durable, it’s not intended for outdoor installation.

Fibreglass tanks are rust and chemical-resistant and designed to withstand extreme temperature levels. They’re not the cheapest option, and more suitable for above-ground installation, while all other styles can also be installed below ground.

Concrete tanks, often used for agricultural and industrial applications, won’t rust, burn, melt or blow away. They can be bought ready-made, or customized onsite.


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

Are you refurbishing, building new or retrofitting?

If you are remodeling or building, rather than retrofitting, you may need to incorporate energy and water-efficient features in your plans to comply with new legislative requirements.

Extra expenditures

When acquiring quotes, inquire if there are any further costs for delivery and installation; extra products (such as pipes, fittings and taps); alternative extras (such as a first-flush or backflow-prevention device); a pump (unless you can utilize gravity for water pressure); and a stand (unless you want to put it on the ground or below it, in which case you’ll need to factor in the cost of special ground prep or excavation).

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

Can you obtain a water tank rebate?

Contact your local water or government authority to see if you’re entitled to a cash rebate or bill reduction– the answer may depend upon the size of the rain caravan water tanks tank and whether it’s connected to a toilet and/or washing machine.


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

Author: jamehoover

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