How Much Rainwater Can You Harvest?

Need help selecting which tank is right for you? Use our water catchment and water usage calculators below to make your selection easier!

How Much Water Will You Use?

When choosing the right rainwater tank, it is helpful to compare how much rainwater you can collect with how much water you are likely to use. Even everyday household and garden use can add up quickly, which is why selecting a quality water tank with enough storage capacity can make a real difference.

The table below gives a simple guide to common water usage around the home and garden. Actual usage will vary depending on your household, appliances, garden size, watering habits and how often each activity occurs.

As you can see, rainwater usage can build quickly, especially when water is used for gardens, lawns, washing machines, toilet flushing, pool top-ups or general outdoor use. That is why a rainwater tank is not just about how much rain falls on your roof — it is also about having enough water storage available when your home, garden or property needs it.

Use our rainwater catchment calculator and water usage calculator above to estimate your potential rainwater harvesting, compare it against your likely water demand, and choose the best water tank size for your property.

So Where are You Going to Store all that Rainwater?

It’s nice to know how much rainwater you can collect from your roof. But to benefit from it, you need to collect that rainwater and store it in a water tank! Having a quality tank to store all that rainwater is what will allow you to have rainwater to use when you need it. Whether it be when the sun is shining, when your home or garden needs it, or perhaps even in drought if you can store enough of it! Thankfully, the team here at The Water Tank Factory offer an impressive range of competitively priced tanks with the best design and inclusions in the industry. Whether you’re looking for a large round poly tank, a more compact slimline tank, or perhaps an under deck or underground tank to store completely out of sight, we’ve got you covered!

We offer fast and affordable freight to QLD including Brisbane, the Sunshine Coast, Gold Coast and well beyond to areas like Dalby and Toowoomba. We also deliver to NSW including Sydney, Central Coast, Newcastle and many regional areas like Coffs Harbour and Lismore. We also service the ACT with freight available to Canberra. And last but not least, we can deliver our impressive range of steel tanks to Victoria including Melbourne and many other parts of the state. Browse our impressive tank range, or contact our friendly team if you require assistance.

When You’re Ready to Start Collecting Rainwater, We’ve Got the Perfect Tank for You

With 43+ years’ experience and the same owners, nothing beats the New Generation Polytank Technology™ included on our poly tank range. Please be wary of cheap copies or inferior makes that won’t stand the test of time. Our tanks are built tough by rotational moulding from premium food grade materials. Computer-aided rib design gives our tanks great rigidity. Furthermore, they include no centre pole and no vertical join lines, which virtually eliminates the thin spots that can occur in some other designs. Our tanks are manufactured from quality Australian materials and are UV stabilised for an even longer life. We’re so confident in our quality range that we include a 20-year warranty, being 10 years repair or replace plus 10 years pro-rata, setting the industry standard. So when you’re ready to collect and safely store rainwater, you can’t beat one of our quality tanks. Explore our range today.