Complete JoJo Water Tank Buying Guide: Sizing, Pumps and Installation Requirements
Guide Type: Buyer guide
Plan a JoJo water tank system with the right storage approach, pump, base, pipework and overflow allowance for a South African residence.
Quick answer
Start with the intended use—backup municipal supply, garden use, rainwater harvesting or a combination—then size storage, pump duty, pipework, filtration and the tank base as one system. A tank alone is not a complete water solution.
How to compare the options
| Option | Best suited to | Include in the allowance |
|---|---|---|
| Backup storage | Continuity during supply interruptions where permitted and correctly isolated. | Tank base, pump duty, isolation, controls, backflow protection and local requirements. |
| Rainwater harvesting | Supplementary non-potable uses or a designed treatment system. | Catchment, gutters, first-flush handling, filtration, overflow and intended water quality. |
Cost and planning checklist
- Use manufacturer installation guidance for a level, fully supported base and correct connections.
- List every outlet and intended simultaneous use before pump selection.
- Separate potable and non-potable decisions clearly and confirm municipal requirements before connecting to a building supply.
Use the estimator
Build an early, region-aware allowance in the Price Your Build free estimator. It is a feasibility tool, not a supplier quotation, final design or professional certification.
Related Building Glossary guides
Frequently asked questions
How large should the tank be?
There is no universal answer. It depends on demand, outage pattern, roof catchment where relevant, space, budget and the use of the stored water.
Do I need a pump?
Gravity can serve some locations, but most household pressure applications require an appropriately selected pump, pipework and controls.
Important
Confirm the final product, scope, installation method, drawings, approvals and professional requirements for the specific site before committing to work.
Source to check
JoJo DIY installation guidance: www.jojo.co.za/diy-installation-brochures-leaflets/