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JoJo Tanks is a 40-year-old+, proudly South African success story – one that is right up there with South Africa’s most loved brands.

Things to consider when choosing and installing a JoJo tank

If you’re looking to invest in a JoJo Tank, the first question you’re probably asking yourself is which JoJo Tank you should buy.

Since each installation is different, your required water tank and size will vary depending on the water source, the desired application, the amount of available space and, of course, your personal preference.

We can narrow it down by looking at the water source and intended use, and then from there you can choose the shape and colour that you like best.

  • Rainwater harvesting – consider the rainfall in your area, your roof size and what the water will be used for. The biggest downfall for rainwater harvesting is a lack of storage capacity.
    A quick calculation to use is: 1mm of rain on 1m2 of roof surface amounts to 1 liter of water.

So a roof area of 100m² would yield approximately 2500Lt in a rainfall event of 25mm.

  • Municipal Backup – take into consideration how much water you need per day (this will vary based on what the water is used for) and the period you would like the backup water to last. On average we use 150 litres of water per person per day in SA. So a 2500Lt tank should provide a family of 4 people approximately 4 days of municipal water backup. Try however to install as much capacity as what you have space for and can afford.
  • Fully integrated system – consider how much municipal water you would like available and then add the amount you would like to harvest in rainwater. You will require a lot more storage capacity for this system as it behaves as both a municipal backup and a rainwater collection system.

Once you’ve selected your JoJo tank, you’ll need to install it. You can either go the DIY-route or have one of our trusted installers do it all for you. Visit the JoJo Tank Installers section on our website to find one your area and contact them for a quote on your specific JoJo Tank installation requirements.

If you’d prefer to handle your JoJo Tanks Installation yourself, there are a few tips and guidelines you should keep in mind.

  • Ensure that you purchase a water storage tank.
    All of our water storage tanks are made with an additional food-grade, black inner lining that prevents algae growth and keeps your water fresher for longer.
  • Ensure that your tank is installed on a suitable base.
    It must be a sound, level and smooth surface. Level paving will suffice, or a properly designed tank stand (with carrier beams spaced not more than 50mm apart). Alternatively, a concrete plinth needs to be built, ideally with a surface bed at least 85mm thick. Regardless of the type of foundation you choose, it should always be a minimum of 100mm wider than the diameter of the tank to avoid overhang.
  • Ensure that you use thread tape for all fittings and connections.
    This is something that is often overlooked and is an important part of the initial installation. To avoid unnecessary leaks, we always advise using thread tape for all connections where water is involved, even if you are only fitting a tap to an already fitted water fitting or reducer.
  • Only use plastic fittings and connections.
    The material used to manufacture our tanks allows for expansion/contraction in hotter and cooler weather conditions. It is important that all fittings/connections are flexible and can move with the tank instead of against it which causes friction/stress and over time could result in leaks.
  • Do not use unsupported connections.

When connecting pipes, gutters etc. to a tank it is important that they are supported to avoid placing the tank under stress.

  • Do not apply any pressure to the tank (internal or external).
    An above ground JoJo tank is not designed to handle any additional pressure. Avoid putting pressure on the roof of the tank during installation or as part of the installation (for example downpipes resting on top of the roof of the tank) as this will cause the roof of the tank to dent or collapse.
  • If the tank will be used for rainwater harvesting, ensure that you install pre-filtration:
    Pre-filtration improves the quality of the water entering into the tank (which is vital as a lot of dirt, dust, leaves, twigs etc. accumulate on your roof and this can cause the water to smell and also clogs pumps etc.)
  • If the tank will be used for Municipal Backup, ensure that you use a professional JoJo installer or accredited plumber to assist with the installation. This system ties into the main water supply line and there are certain plumbing laws that need to be adhered to.