When installing the plumbing system for a new house, it is a normal practice for the water from the Mains to go to the storage tank and the kitchen sinks. From the storage tanks the water is then directed to all other outlets like the bathrooms and toilets thereby providing continuous water supply in times of water rationing.
Having such a system has it’s pros and cons. In times when water rationing is going on and water supply is stopped for a few hours daily, you will still have water from the storage tank to flush your toilets and take your bath. However, you will be without water in your kitchen and cooking could be quite troublesome.
Stored water is cleaner than the water coming from the mains because all sediments would have settled down to the bottom. The level of chlorine too would have been neutralized a little. It is ridiculous if you think of the situation when there is water rationing. People will start to store water in drums and they presumed that water stored by them manually is fit for consumption while water stored in their storage tanks is not.
Continuous Water Supply In Times Of Rationing.
There is a solution where you can have Continuous Water Supply in times of water rationing or whatever reasons that have caused your water supply to be disrupted. The only thing you need is 2 check valves or one way valves as some calls it. As the name suggest, these valves only allows water to travel in a single direction. Below is a picture and a simple diagram of how a one way valve works.
To achieve uninterrupted supply, refer to the diagram below. I must add that this is best done during a new installation.
Interconnect the incoming Mains with the supply pipes from the water tanks as indicated in red and place the one way valve as shown. What happens is when there is water coming from the Mains, the water will flow through valve B to the kitchen. The water is prevented from going into the tank by valve B installed along the pipe indicated in red.
When there is a disruption, the pressure from the main pipes drops to almost zero, thereby allowing water from the tank to push through the valve A and make it’s way to your kitchen sink. The water from your tank is prevented from flowing back to the main pipes and to your neighbor’s house by valve B
The most important factor is the placement of the one way valve during installation. Make sure the one way valve’s flow direction is correct. There will be an arrow indicating the water flow direction inscribed on the valve. If the valves are installed backwards, the system will not work and you might have a problem of your tanks overflowing.