How to Choose What Kind Of Water Tank Is Most Suited For Melbourne

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 yet another by installing a water tank to capture a portion of that downpour: it’ll decrease your environmental footprint by lowering your demand on mains water and the quantity of stormwater runoff into rivers and oceans, and can also slash your water bill in the long term.

Rainwater tanks are no more just click the next webpage huge, round and bad-looking; they are available in all sizes and shapes that can make efficient use of minimal or tricky urban spaces.

Water for outdoor or indoor use?

Easily the most important issue to consider before you buy and install a rainwater tank is how you want to use the water.

Employing the water outdoors– for watering the garden and washing the car, for example– is the best way to start, as you possibly just need the supplier to install the tank, rather than a licensed plumber. And it will instantly cut your consumption of mains water.

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

What size rainwater tank do I need to have?

The storage capacity you choose will hinge on the size and shape of your household and garden. Round, squat tanks fit adequately under a deck, while slimline 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 region will also have to be considered. To help determine the size and shape that’s ideal for you, sellers often provide calculators on their websites, or your water authority may be able to help.

What else do I need to understand before purchasing a rainwater tank?


Water tanks typically come in the following materials:

Metal tanks are crafted from corrugated or flat rolled metal, which may be galvanised or coated. They often include a plastic inner lining (Aquaplate) that will boost the life of the tank and shield the water quality.

Polyethylene (plastic) tanks are well-known as they are comparatively cheap and durable. Because rust isn’t an issue, they are a great option for people living near the sea. Other synthetic materials, like PVC and geotextile, are used for bladder storage. Bladders work 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 created to withstand extreme temperatures. They’re not the cheapest option, and more suitable for above-ground installation, while all other types can also be installed below ground.

Concrete tanks, more often 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 regional council and water supplier which rules and regulations are applicable 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, as well as restrictions on the tank’s location, colour, height and labelling or noise regulations for a pump.

Are you refurbishing, building new or retrofitting?

If you are restoring or building, in lieu of retrofitting, you may have to incorporate energy and water-efficient components in your plans to obey new legislative requirements.

Extra costs

When acquiring quotes, ask if there are any additional 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 use gravity for water pressure); and a stand (unless you want to put it on the ground or below it, by which case you’ll need to factor in the cost of special ground prep or excavation).

If you would like to connect the tank to your mains water supply, think about the cost of a licensed plumber, and costs for any supplementary work that needs to get done to your roof and/or guttering.

Can you get 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 on the size of the rain water tank and whether it’s connected to a toilet and/or washing machine.


Rainwater tanks can range from around $700 to $2000, starting from 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: simonstine256

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