Your internal stop tap, (also known as a stopcock or stop valve) will be found on your mains water supply pipe. This is the pipe that supplies fresh water into your home. If you turn this tap clockwise to the closed position you should have shut off the freshwater supply to your home. Test the kitchen cold water tap to see if any water comes out. If it doesn't you have found your internal stop tap. If you’re still unsure watch this guide to setting up your LeakBot or email LeakBot’s customer support team on firstname.lastname@example.org.