How to Ensure Adequate Water Pressure from Your Cistern?

Sizing the Cistern

Sizing your cistern correctly is crucial to ensure sufficient water pressure. Calculate your total household demand by considering the simultaneous use of fixtures and appliances. A general rule of thumb is to size the cistern to provide at least 10 gallons per minute of water flow. For example, if you have a household of 4 people, a 3-bedroom home with 2-3 bathrooms, and multiple appliances like washing machines and dishwashers, a 10,000-15,000 gallon cistern would be a suitable size.

Pump System and Piping

A suitable pump system is necessary to provide adequate water pressure from your cistern. Consider using a submersible pump or a jet pump, depending on your specific needs and the depth of your well. Proper piping and control valves are also essential to regulate water flow and pressure. A minimum of 2" piping diameter is recommended for adequate flow rates. Install a pressure switch to regulate the pump’s operation based on system pressure.

Additional Considerations

When installing a cistern, consider the following factors to ensure adequate water pressure:

• Account for elevation changes: If your cistern is located uphill from your household, you may need a larger pump or a more powerful pump system to compensate for the increased pressure loss.
• Use a pressure tank: A pressure tank can help regulate water pressure and provide a buffer during periods of high demand.
• Regularly inspect and maintain the system: Regular maintenance is crucial to ensure the longevity and performance of your cistern and pump system.