How to Determine What Kind Of Watertank Is Best Suited For Melbourne, Vic

There aren’t many consolations to a rainy day– cosy sofa time, soothing sounds of water 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 will decrease your environmental footprint by minimizing your demand on mains water and the amount of stormwater runoff into rivers and oceans, and can also reduce your water bill in the long term.

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

Water for outdoor or indoor use?

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

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

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

What size water tank do I really need?

The volume you choose will rely on the size and shape of your household and garden. Round, squat tanks fit very well 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, although 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 perfect 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 identify before purchasing a water tank?


Rain water tanks usually are available in the following materials:

Metal tanks are manufactured from corrugated or flat rolled metal, which might be galvanised or coated. They often incorporate a plastic inner lining (Aquaplate) that will boost the quality of life of the tank and safeguard 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 ocean. 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 heat levels. They’re not the cheapest possibility, and preferable for above-ground installation, while all other kinds 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 can be bought ready-made, or customized onsite.


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

Are you renovating, building new or retrofitting?

If you are refurbishing or building, in lieu of retrofitting, you may have to incorporate energy and water-efficient features in your plans to abide by new legislative requirements.

Extra costs

When getting quotes, ask if there are any additional costs for delivery and installation; extra components (such as pipes, fittings and taps); optional 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, by 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 supply of water, look into the cost of a licensed plumber, and expenses for any additional work that needs to get done to your roof and/or guttering.

Can you acquire a water tank rebate?

Talk to your local water or government authority to see if you’re entitled to a cash grant or bill reduction– the answer may depend upon 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: lesli83k879964

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