How to Choose What Kind Of Water Tank Is Best Suited For Melbourne, Vic

There aren’t many consolations to a rainy day– cosy sofa time, soothing sounds of drops on the roof, and maybe a rainbow or a puddle-splash afterwards. But you can add yet another by placing a water tank to capture a portion of that downpour: it will decrease your environmental footprint by decreasing your demand on mains water and the quantity of stormwater runoff into rivers and oceans, and can also trim your water bill in the long run.

Rainwater tanks are no more just huge, round and uninviting; they can be found in all sizes and shapes that can make efficient use of minimal or tricky urban spaces.

Water for outdoor or indoor usage?

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

Employing the water outdoors– for watering the garden and washing the car, for example– is the most convenient way to start, as you most likely just need the supplier to set up the rainwater tank, rather than a licensed plumber. And it will immediately cut your utilization of mains water.

Save lots more by sending the rain 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 tank do I need to have?

The storage capacity you choose will rely on the shapes and size of your household and garden. Round, squat tanks fit adequately 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, but is more expensive.

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

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


Rainwater tanks typically are available in the following materials:

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

Polyethylene (plastic) tanks are well-liked as they are reasonably cheap and durable. Because rust isn’t an issue, they are a great option for people living near the coast. Other synthetic materials, like PVC and geotextile, are used 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 manufactured 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 purposes, won’t rust, burn, melt or blow away. They can be bought ready-made, or custom made onsite.


Ask your local area council and water supplier which rules and regulations apply in your region. You may need to provide 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 placement, colour, height and labelling or noise regulations for a pump.

Are you renovating, building new or retrofitting?

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

Extra expenditures

When acquiring quotes, ask if there are any additional costs for delivery and installation; extra materials (such as pipes, fittings and taps); alternative extras (such as a first-flush or backflow-prevention device); a pump (unless you can make use of 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 want to connect the tank to your mains water tank cleaning system, factor in the cost of a licensed plumber, and expenses for any extra work that needs to get done to your roof and/or guttering.

Can you receive a water tank rebate?

Check with your local water or government authority to see if you’re entitled to a cash rebate or bill reduction– the answer may rely 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: carmelo83z

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