Lead water supply pipes in the Cleveland Ohio area if present in a home are usually the main supply line from the street that comes into the home usually in the basement and connects to the water meter. You can tell if the line is lead if you scrape the surface of the pipe and you see a shiney silvery metal scratch.
Even though the Cleveland city municipal water authority adds something to the water supply that causes the inside diameter of the pipes to become coated with a protective layer, if you have a lead water main from the street you should have your home’s water tested for lead concentration. You can do this by contacting a local water testing facility and bringing a sample of your water to them for testing. If the test comes back elevated, you can either have the main line replaced or have a lead filtration system installed on your plumbing.