How to Choose Which Water Tank Is Most Suited For Melbourne

There aren’t many consolations to a rainy day– cosy lounge time, soothing sounds of water on the roof, and perhaps a rainbow or a puddle-splash afterwards. But you can add another by placing a water tank to capture a bit of that downpour: it will shrink your environmental footprint by reducing 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 longer just huge, round and ugly; they come in all shapes and sizes that can make efficient use of tiny or tricky urban spaces.

Water for outdoor or indoor use?

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

Making use of 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 set up the water tank, as opposed to 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 need a licensed plumber to connect the water tank to your mains supply.

What size rainwater tank do I really need?

The storage capacity you choose will depend 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 location will also have to be considered. To help determine the size and shape that’s best for you, sellers often provide calculators on their internet sites, or your water authority may have the opportunity to help.

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


Water tanks commonly can be found in the following materials:

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

Polyethylene (plastic) tanks are prominent as they are comparatively cheap and durable. Because rust isn’t an issue, they are a great option for people living near the ocean. Other synthetic materials, like PVC and geotextile, are utilized for bladder storage. Bladders work for water storage below a deck or floor; while their material is tough, 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 solution, and preferable for above-ground installation, while all other styles can also be set up below ground.

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


Ask your regional 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 policies around drinking rainwater or mosquito breeding prevention, as well as 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 refurbishing or building, rather than retrofitting, you may need to incorporate energy and water-efficient functions in your plans to comply with new legislative requirements.

Extra expenditures

When obtaining quotes, inquire 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 employ 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 consider the cost of special ground prep or excavation).

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

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


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

Author: kassie46b286

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