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Five Ways Water Tanks Can Help You Save

4th May 2015
By Aaron Pace

Water tanks are not just helpful to the environment; they can really have a positive impact on your household or business.

Here’s five ways a water tank can help you save:

  1. A rainwater tank will have you buying less water, no change of habits required. With the average Australian household using around 800L of water per day, it can end up being a more cost-effective and convenient way to save water and the subsequent water bill.
  2. The average full toilet flush uses a whopping ten litres of water, while a full load of washing on a normal cycle gobbles up 150 litres! If your water tank serviced just the toilet and laundry, you would save literally tens of thousands of litres of water per year.
  3. Rainwater tanks are five times more energy efficient than a desalination plant, per kilolitre of water produced. The positive impact this has on both water-saving measures and greenhouse gas emissions is staggering.
  4. Too much rainwater flowing from urban areas actually impacts the environment in a negative way, eroding creek banks and making way for pollutants in main waterways. This erosion also decreases the food available to fish and other aquatic life. By installing a water tank, you can do your bit for the environment in more ways than one.
  5. The percentage of household water use in the garden is typically in the range of 25%-50%, and it is simple to utilise harvested rainwater for this purpose. You can use a sprinkler or watering system to water your garden or lawn with a rainwater tank at any time of day, regardless of restrictions, as long as your rainwater tanks is not connected to or topped up by the drinking water system.


Water is our most precious resource, and it is so easy to use it more wisely. Save money and save the environment by calling Poly Water Tanks.


“How to Harvest Your Own Rainwater Today”

If you have stumbled upon this site and clicked here to find out what the heck we’re talking about, then this is the article designed to get you right up to speed with the benefits of capturing your own rainwater.

Are you ready? Let’s get started.

Obviously, a water tank is going to be the most beneficial way to harvest your own rainwater, with the most positive results in your favour.

Basically, a rainwater tank will be set up to capture all the rainfall hitting your roof. If you work out the surface area of your roof, you can attribute 1mm of rainfall per 1m2 of roof surface area to approximately 1L of water captured in your tank.

Why would you want to do this? Well, chiefly, this saves water for the environment, and costs to you in your water bill. Perhaps it would be beneficial to review just how much water everyday activities can consume:

Toilet flush

10 litres

Toilet (dual cistern) half-flush

5 litres


100 litres

Ten-Minute Shower

200 litres

Standard dishwasher load

50 litres

Standard washing machine load

150 litres

Drinking, cooking and cleaning

10 litres (per person, per day)

Hand basin

3 litres (per use)

Garden sprinkler per hour

1000 litres

Garden dripper per hour

4 litres

Car washing with hose

200 litres

Hosing driveway

100 litres

Brushing teeth with the tap running

5 litres

When you really think about it, using our cleanest, purest drinking water for activities like hosing the driveway, seems rather wasteful. If you diverted rainwater to service only the toilet and laundry, you’re saving literally tens of thousands of litres of water per year.

It makes more sense, right?

Talk to us today about your very own rainwater tank solution.

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