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How To Find Your Stopcock - Leaks, Burst Pipes & Stopping Water Supply

Do you have a plumbing problem such as a leak or a burst pipe? To fix these issues, you’ll need to turn off your water supply. To do this, you’ll need to find your stopcock!

Quick tip: it’s a good idea to get a pair of grips or pliers to help turn the stop cock off as it’s possibly not been turned off for a while and may be quite stiff to turn off.


  • ToolsWrench
    - to turn the stopcock off if it’s stiff to turn



  • Screw driver
    - to open a street stopcock plate



  • Stopcock key
    - to turn off the stopcock in the street if you can’t
    reach it with your hands as it’s too deep

There’s normally a stopcock in your property to isolate the plumbing within the building. But if you can’t find one in the property, there’s usually either one in the street, just outside your front garden on the pavement or on the entrance to your block or building.

Here’s a list of places where you might find your stop cock:


  • Under the kitchen sink
  • In the cupboard, under the stairs in your hall way
  • In the cellar
  • In the hallway cupboard
  • Behind the washing machine
  • Under the entrance floor where you sometimes have the door mat (if accessible)
  • In the front garden near the boundary
  • Near the gas meters
  • Boiler room or plant room (if you have a commercial property)


If you still can’t find it, it may be worth asking your neighbour where theirs is, especially if both your properties were built at the same time – they might be located in the same place!


What Does a Stopcock Look Like?


These images show you what to look out for:


These street stopcock are what you might find to turn off your mains water supply outside:


Outside Stopcocks

Remember: AHP boiler services are here to help you, so Contact us today if you’re unable to fix your plumbing problem. Our qualified plumbers cover both Hertfordshire and London.

Our friendly staff don’t bite and we look forward to hearing from you.

Alternatively, find out more about us or get a fast quote for some free friendly advice for any work you’re thinking of undertaking.

Author: Tony Hernandez

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