Choosing the right water tank size depends on several important factors, including how much space you have available, how much water you want to store, your roof catchment area, average rainfall in your location, and how you plan to use the water. A small tank may be suitable for garden watering or emergency backup, while a larger rainwater storage tank may be better for household supply, lifestyle blocks, rural properties, or off-grid living.
Kiwi Tanks supplies a wide range of water storage tanks in New Zealand for homes, gardens, compact properties, lifestyle blocks, farms, rural properties, off-grid setups, commercial sites, and general water storage use. Our tanks can be used for rainwater collection, garden irrigation, outdoor cleaning, backup water supply, and larger property water management.
If you are unsure which water tank size is right for your property, contact Kiwi Tanks and we can help you choose the best option based on your available space, water storage needs, tank colour, fittings, access requirements, and delivery location. We can also help you compare different tank sizes so you get a practical water storage solution that suits your property and intended use.
Quick Tank Size Guide
1000L Water Tank
1500L Water Tank
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Best for garden use, extra household water storage, emergency backup water, and small lifestyle properties.
The 1500L water storage tank is a practical option for homeowners who need more capacity than a smaller tank while still keeping a compact footprint. It is well suited for garden watering, rainwater collection, outdoor cleaning, emergency water storage, small homes, baches, tiny homes, and lifestyle properties with limited space.
A 1500L rainwater tank provides extra water storage for everyday outdoor use and can help reduce reliance on mains water for tasks such as watering plants, washing tools, cleaning outdoor areas, or storing backup water during dry periods. Its size makes it a good middle-ground option for properties that need reliable home water storage without installing a large tank.
This tank is ideal for people wanting a simple and space-conscious water storage solution in New Zealand, especially where access, garden size, or available installation space may be limited.
2200L Slimline Water Tank
Best for narrow spaces, side-of-house areas, decks, compact homes and tight access locations.
The slimline water tank is a smart choice when you need practical rainwater storage but do not have enough room for a large round tank. Its slim design makes it ideal for narrow spaces, side-of-house installations, decks, pathways, small gardens, urban properties, townhouses, baches and homes with limited outdoor space.
A slim water storage tank is perfect for collecting rainwater from your roof and using it for garden watering, outdoor cleaning, emergency backup water, washing tools and equipment, or general household water storage. It provides useful water capacity while fitting neatly into areas where a standard round water tank may not be suitable.
This tank is a great option for homeowners who want a space-saving rainwater tank in New Zealand without giving up valuable yard or garden area. If you need a compact and efficient water storage solution for a tight location, a slimline tank can help you make the most of the space available.
3500L Water Tank
Best for medium home water storage, garden watering, rural properties, lifestyle blocks and backup water supply.
The 3500L water storage tank is a practical middle-size option for households and property owners who need more capacity than a small rainwater tank, without moving into the largest tank sizes. It is well suited for medium home water storage, garden use, rural properties, lifestyle blocks, baches, small farms and properties needing a reliable backup water supply.
A 3500L rainwater tank can be used to collect and store roof rainwater for everyday outdoor tasks such as watering gardens, cleaning outdoor areas, washing tools and equipment, or supporting general property water needs. Its size makes it a good balance between storage capacity and installation space, offering useful water storage while still being manageable for many residential and rural properties.
This tank is a strong option for homeowners wanting a dependable water storage tank in New Zealand for seasonal dry periods, emergency water backup, or reducing reliance on mains water for outdoor use. If you need a versatile tank that provides more storage without taking up the space of a larger tank, the 3500L tank is a practical and reliable choice.
5000L Water Tank
Best for larger homes, lifestyle blocks, garden irrigation, rural properties and backup water storage.
The 5000L water storage tank is a popular choice for properties that need a larger amount of stored water for regular household, garden or outdoor use. It is well suited for larger homes, lifestyle blocks, rural properties, small farms, baches, gardens and properties needing a dependable backup water supply.
A 5000L rainwater tank can be used to collect and store roof rainwater for a wide range of everyday tasks, including garden irrigation, lawn watering, outdoor cleaning, washing tools and equipment, topping up water systems, or keeping extra water available during dry periods. Its larger capacity makes it a practical option for homeowners who want more water storage without moving straight into very large tank sizes.
This tank is a strong all-round option for anyone looking for a reliable water storage tank in New Zealand. It offers a good balance of capacity, practicality and versatility, making it suitable for regular water use around the home, garden, lifestyle block or rural property.
7500L Water Tank
Best for rural properties, lifestyle blocks, off-grid setups, larger homes and reliable backup water storage.
The 7500L water storage tank is a strong option for customers who need dependable rainwater storage and a larger water supply for regular use. It is well suited for rural properties, lifestyle blocks, farms, off-grid homes, larger households, baches, commercial sites and properties where access to mains water may be limited or where extra water storage is important.
A 7500L rainwater tank can be used to collect and store roof rainwater for a wide range of uses, including household water storage, garden irrigation, outdoor cleaning, livestock or property maintenance, emergency backup water, and general rural water supply. Its larger capacity makes it a practical choice for properties that need more reliable stored water throughout the year or during dry periods.
This tank is ideal for homeowners, rural property owners and off-grid users looking for a durable and practical water storage tank in New Zealand. With strong storage capacity and versatile use, the 7500L tank provides a reliable solution for customers who need more water available when they need it.
10500L Water Tank
Best for large homes, farms, rural properties, commercial sites, lifestyle blocks and high-volume water storage.
The 10500L water storage tank is designed for customers who need serious rainwater storage capacity for ongoing household, rural, farm or commercial use. It is well suited for large homes, farms, lifestyle blocks, rural properties, off-grid setups, commercial sites, horticulture, garden irrigation and properties that require a dependable backup water supply.
A 10500L rainwater tank can be used to collect and store roof rainwater for a wide range of regular uses, including household water storage, garden watering, irrigation, outdoor cleaning, property maintenance, livestock water support, emergency backup water and general high-volume water storage. Its large capacity makes it a practical choice for properties that need more stored water available throughout the year, especially during dry periods or in areas with limited mains water access.
This tank is a strong option for anyone looking for a reliable large water storage tank in New Zealand. If your property needs long-term water storage, greater water security, or a high-capacity tank for regular use, the 10500L tank provides a practical and dependable solution.
How to Choose the Right Tank
When choosing the right water tank, it is important to consider your available space, water storage needs, property type and how the tank will be used. The best water storage tank for your property will depend on whether you need water for garden watering, household use, rural supply, lifestyle block water storage, commercial use, or emergency backup water.
Before selecting a tank, use this checklist:
- How much space you have available
- Whether you need a round water tank or slimline water tank
- How much water you use
- Whether the water is for garden, household, rural or backup use
- Your roof catchment area
- Delivery access to your property
- Fitting positions
- Colour preference
- Base preparation and installation requirements
Round tanks are a popular option for larger storage areas, while slimline tanks are ideal for narrow spaces, side-of-house areas, decks and tight access locations. You should also consider your average rainfall, where the tank will be positioned, and how the water will be connected to your downpipes or water system.
Kiwi Tanks can help you choose the right water tank size, colour, fittings and delivery option based on your property, available space and intended use.
Need Help Choosing?
If you are not sure what water tank size you need, we can help you choose the right option for your property. Tell us about your available space, property type, roof catchment area and how you plan to use the water, and we can recommend a suitable water storage tank and setup.
Whether you need a tank for garden watering, household water storage, rural supply, lifestyle block use, off-grid living, emergency backup water, or commercial water storage, we can help you compare tank sizes and choose a practical solution.
Contact us for help choosing the right rainwater tank, custom fittings, tank colour, fitting positions and delivery options. We can help make sure your tank suits your space, water storage needs and installation requirements.