How to Choose What Kind Of Water Tank Is Best 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 attaching a water tank to capture some of that downpour: it’ll shrink your environmental footprint by decreasing 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 longer just huge, round and unsightly; they come in all sizes and shapes that can make efficient use of small or tricky urban spaces.

Water for outdoor or indoor application?

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

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

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

What size rainwater tank do I need?

The 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 region will also have to be considered. To help determine the size and shape that’s suitable for you, sellers often provide calculators on their online sites, or your water authority may have the ability to help.

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


Rainwater tanks generally can be found 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 boost the quality of life of the tank and shield the water quality.

Polyethylene (plastic) tanks are popular as they are reasonably cheap and durable. Because rust isn’t a conern, they are a pretty good option for people living near the ocean. Other synthetic materials, like PVC and geotextile, are utilized for bladder storage. Bladders are useful 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 developed to withstand extreme temperature levels. They’re not the cheapest option, and preferable for above-ground installation, while all other styles can also be set up below ground.

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


Ask your regional council and water supplier which rules and regulations are applicable 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 specific location, colour, height and labelling or noise regulations for a pump.

Are you renovating, building new or retrofitting?

If you are remodeling or building, as opposed to retrofitting, you may need to incorporate energy and water-efficient functions in your plans to observe new legislative requirements.

Extra expenditures

When obtaining quotes, inquire if there are any supplementary costs for delivery and installation; extra products (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 intend to put it on the ground or below it, in which case you’ll need to think about the cost of special ground prep or excavation).

If you intend to connect the tank to your mains water system, look into 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 get a water tank rebate?

Talk to 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, beginning with 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: adelaide7786

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