Our house has been supplied with 'mains' water from a spring for many years with no problems. The new next-door neighbours are running a trench to install water from the public supply, so we took the opportunity to go with them and share costs. So very shortly we will have a proper mains supply pipe alongside the spring water supply pipe.
I intend to use the spring water supply as usual with the public supply (which I have to pay for) in reserve. Does anyone have any suggestions how the two supplies could be plumbed so the supplies could be switched from one to another?
I can't find the appropriate regs on the internet, but I believe there has to be physical separation of the two supplies. I assume that a double check valve for backflow protection isn't accepted?
I intend to use the spring water supply as usual with the public supply (which I have to pay for) in reserve. Does anyone have any suggestions how the two supplies could be plumbed so the supplies could be switched from one to another?
I can't find the appropriate regs on the internet, but I believe there has to be physical separation of the two supplies. I assume that a double check valve for backflow protection isn't accepted?