Lead has been found to be harmful for our health, which means it's important to know if you're exposed.
Lead is soluble. That means when water is travelling through lead pipes, the lead is dissolving into the water.
An easy way to find out is to use the scrape test. Go to the water supply pipe under the kitchen sink and gently scrape it with a penny.
If you can scrape the pipe and cause a shiny, silver mark, your pipes are made of lead.
The most common types of pipe are copper, plastic and iron.
Copper is bright, but over time dulls to a brown colour.
Iron is a very hard, dark material, so the scrape test shouldn't cause shiny marks.
Plastic, which can vary in colour but is often blue, grey or black.