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Hertfordshire Shared Water Supply Services
What is a Common Supply Pipe System?
Often older homes and properties, mostly terraced houses and occasionally some semi-detached houses, will use a common supply pipe system (Shared supply). This is a single pipe that supplies the water from the mains to two or more properties using a shared stop tap. Very simply, this means that your water supply branches off from the mains with your neighbours.
When these older style system was installed, the pipes that may of been laid could could and are normally smaller in diameter than the more modern variety and were often made of lead or iron. By having a smaller diameter combined with a shared supply pipe with your neighbours, this can mean a drop in pressure for you and your family particularly at busy times of the day such as mornings or evenings.
How do I know if my supply pipe is shared?
1. Find your external stop tap to your property. If your stop tap is outside your boundary or close to a neighbouring property you may have a shared supply.
2. By turning off your stop tap you’ll quickly see how many homes it affects. Please warn your neighbours you are doing this and ideally involve them in the process.
However, if you cannot find your stop tap or it is hard to access we suggest that you contact your local water authority who will be able to advise further.