Water Tank Size Guide

Choosing the right water tank size depends on how much space you have, how much water you want to store, your roof catchment area, and how you plan to use the water.

Kiwi Tanks supplies a range of water storage tanks for homes, gardens, lifestyle blocks, rural properties, off-grid setups and commercial use. If you are unsure which tank is right for your property, contact us and we can help you choose the right size, colour, fittings and delivery option.

Quick Tank Size Guide

1000L Water Tank

Best for small gardens, compact homes, emergency backup water and properties with limited space.

A 1000L tank is a good choice when you need a smaller water storage option for garden watering, outdoor cleaning or backup supply.

1500L Water Tank

Best for garden use, extra household water storage and small lifestyle properties.

A 1500L tank gives you more storage while still being suitable for properties where space is limited.

2300L Slimline Water Tank

Best for narrow spaces, side-of-house areas, decks and tight access locations.

A slimline tank is ideal when you need useful water storage but do not have room for a large round tank.

3500L Water Tank

Best for medium home water storage, garden use, rural properties and backup water supply.

A 3500L tank is a practical middle-size option for households wanting more water storage without moving into the largest tank sizes.

5000L Water Tank

Best for larger homes, lifestyle blocks, garden irrigation and backup storage.

A 5000L tank is a popular option for properties that need a larger amount of stored water for regular use.

7500L Water Tank

Best for rural properties, lifestyle blocks, off-grid setups and larger household water storage.

A 7500L tank gives strong storage capacity for customers who need more reliable water supply.

10500L Water Tank

Best for large homes, farms, rural properties, commercial sites and high-volume water storage.

A 10500L tank is suitable when you need serious water storage capacity for ongoing use.

How to Choose the Right Tank

When choosing a water tank, consider:

  • How much space you have available
  • Whether you need a round tank or slimline tank
  • How much water you use
  • Whether the water is for garden, household, rural or backup use
  • Your roof catchment area
  • Delivery access
  • Fitting positions
  • Colour preference
  • Base preparation and installation requirements

Need Help Choosing?

If you are not sure what size tank you need, Kiwi Tanks can help. Tell us about your property, available space and intended use, and we can recommend a suitable tank size and setup.

Contact us for help choosing the right water tank, custom fittings and delivery options.