How to Decide Which Watertank Is Most Optimal For Melbourne

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

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

Water for outdoor or indoor application?

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

Employing the water outdoors— for watering the garden and washing the car, for instance— is the simplest way to start, as you probably just need the supplier to install the tank, as opposed to a licensed plumber. And it will immediately cut your consumption of mains water.

Save lots more by sending the rain 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?

The storage capacity you choose will rely on the size and shape 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, however, is more expensive.

Your roof area and the annual rainfall in your region will also need 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 have the opportunity to help.

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


Water tanks normally come in the following materials:

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

Polyethylene (plastic) tanks are well-known as they are fairly cheap and durable. Because rust isn’t a problem, they are a good option for people living near the coast. Other synthetic materials, such as PVC and geotextile, are used 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 heat levels. They’re not the cheapest solution, and better for above-ground installation, while all other types can also be set up below ground.

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


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

Are you remodeling, building new or retrofitting?

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

Extra expenditures

When getting quotes, inquire if there are any additional costs for delivery and installation; extra materials (such as pipes, fittings and taps); optional extras (such as a first-flush or backflow-prevention device); a pump (unless you can work with gravity for water pressure); and a stand (unless you would like to put it on the ground or below it, through 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 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 obtain a water tank rebate?

Consult 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 tank and whether it’s connected to a toilet and/or washing machine.


Rainwater tanks can vary read this blog article from Julianhefner 534 Weebly 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.