Locating your Mains Water Stopcock

You need to know how to find your stopcock if you have a plumbing problem such as a leak or a burst pipe. In order to fix these issues and prevent any further water damage, you’ll first need to turn off your water supply. This article shows you 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.

You will need:

  • 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

Short on time?

The quickest and stress-free way to get your plumbing and water leaks fixed is to call us out. Our vans carry many common spare parts so we can usually get back to normal in the same visit. Contact us for a no-obligation phone consultation/quote. We cover North London, West London,  Watford, Hertfordshire and Middlesex locations.

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 well 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 Middlesex, Watford, Hertfordshire and London locations.

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.

Booking a Plumber is Easy with Us

In London, Watford, Hertfordshire, Middlesex and nearby locations

Get a Quote

Use the online quote button or call us free. Tell us what the problem is. We'll quote you a price and get your agreement to proceed.

Get the work done

We'll take your address details and come at a time to suit you. We carry a range of common spare parts so we can usually get things working with one visit.


Get on With Your Day

Carry on enjoying your day in the happy knowledge that your repairs are done and everything is working smoothly in your home.

Pin It on Pinterest

Share This