Advanced Heating & Plumbing logo

0800 328 0449


Covid19 Notice

Be assured that robust measures are in place to protect our staff and customers from the spread of COVID19

Advanced Knowledge Centre

How to find your stopcock

How-to, Plumbing

Locating your Mains Water Stopcock

Do you have a plumbing problem such as a leak or a burst pipe? In order to fix these issues, you’ll need to turn off your water supply. Consequently, you’ll need to know to how 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.

  • Wrench – 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
  • the understair cupboard in your hallway
  • 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!

Where and how to find your Stopcock

These images show you what a mains water stopcock in your property looks like:

internal stopcock images
outside mains water stopcock images

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

Remember: we 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.

Book your appointment by contacting us today.

Disclaimer: The information contained on this website if for general information purposes only. You should not rely upon the material or information on the website as a basis for making any decisions or actions and we don’t accept liability for anything you chose to do with the information.