Municipal backup system

What is a municipal backup system?

A water backup system will enable uninterrupted water usage in your home when the Municipal water system fails or is shut down for maintenance or repairs. 

A water tank and pump will be installed along the main water supply to the property. 

Water is fed into the tank from the municipal supply, when the tank is full, the water continues to flow into the water supply to the house. 

The water is constantly flowing through the tank, which means the water is not stagnant and there is always a tankful of fresh municipal water available. 

When the municipal water fails, the pump senses the loss of pressure, and the backup water supply is automatically pumped into your house when a tap is turned on. 
When the tap is closed, the pump will switch off automatically.

When the municipal water supply is restored, the water tank will automatically start to refill. 

The pressure pump will sense that municipal water is on again and you go back to using municipal water.

The size of the tank will depend on individual requirements. 

Installation of a municipal backup system

1. Base / concrete plinth 

Ensure tank is installed on a suitable base. The base must be sound, level, smooth, free of any protrusions and at least 100mm wider than the base of the tank (refer to pre-installation).

2. Plumbing – tank to pump

Use minimum of 25mm diameter pipe from the tank, to the gate valve, to the pump. Connect the pump to the electrical main supply.

3. Plumbing – pump to house

a. Use minimum 20mm pipe from pump to cut into mains (where possible), before the PRV valve.
b. Install a non-return valve (between house and mains) to ensure no back pressure to mains.
It is recommended that the foundation should be at least 100mm wider than diameter of tank.

4. Supply tank with water

Supply the tank with municipal feed to float valve at the top of the tank. When full, the float valve will close the water supply and when it drops it will open and allow the tank to be filled.

5. Fill the tank

Ensure that the gate valve is open and fill the tank from municipal supply.

6. Recommendation

It is recommended that the water is run once every two weeks to rotate the water and ensure system functions properly.

Contact our Construction Company in Durban for more information about our Municipal Water Backup solutions.



MiCon are JOJO Water Tank recommended installers.

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