By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. View our Privacy Policy for more information.

How to Verify Service Line Materials with leadCAST

If your home was built before 1988, you may have a lead service line. Follow the steps in this guide to check your water service line material.
Step 1
Gather a strong magnet and a key or coin.
A strong magnet, a key and a penny
Step 2
Find where your service line enters your building.

If your water meter is inside: the service line is the water pipe between your outdoor-facing wall and the meter. It is usually in a basement, crawl space, or utility closet.

If your water meter is outside: find where the pipe enters the building. There will likely be a valve in a basement, crawl space, or utility closet.
Examples of water meters.
Step 3
Test the material of the pipe coming from the street: scratch the pipe with the key or coin, then hold the magnet to see if it sticks. Then compare your results to the options below.
A photo of lead pipe material.
Lead
  • Gray or Silver
  • Scratch Test: Shiny and Silver (soft and scratches easily)
  • Magnets will not stick
  • Widens at base and forms a bulb
A photo of galvanized steel pipe material.
Galvanized Steel
  • Gray or Silver
  • Scratch Test: No visible scratch on surface
  • Magnets will stick
  • Has threads at connections
A photo of copper pipe material.
Copper
  • Dull brown; greenish
  • Scratch Test: Same color as a penny
  • Magnets will not stick
A photo of brass pipe material.
Brass
  • Brown; can have green corrosion spots
  • Scratch Test: Gold color
  • Magnets will not stick
  • Has threads at connections
A photo of plastic pipe material.
Plastic
  • Smooth and red, blue, black, or white
Step 4
Upload your photos and results into leadCAST.

Photo tip: make sure to get a clear view of the pipe, closer view of scratch or magnet test, view of pipe with shut off valve.

If you don't have a leadCAST login, please contact your utility provider for a link to the customer portal.
pipes made out of various materials laying on engineering drawings

What to do if your service line is lead or galvanized steel

1

Sign up for your community's lead service line replacement program, if one exists.

After reporting your service line material and giving contact information, your water provider will keep you updated about its program. If there is no program available, you can contact a plumber to replace your lead service line.

2

Use filters.

Consider using a water filter. Be sure the filter is approved to reduce lead (NSF 53-certified): visit www.nsf.org for information on the appropriate water filters.

3

Run cold water before using.

The longer the water stays in the plumbing, the more lead it may have. If the water in the faucet has been sitting for more than six hours, run water for 5 minutes before using it. Showering and flushing the toilet also help flush your water line.

4

Use cold water for cooking and drinking.

Lead dissolves into hot water more easily than cold water. If you need hot water, draw cold water and then heat it. It is still safe to shower, wash dishes, and do laundry with hot water from the tap. Lead does not leach into humans through the skin.

5

Remove and clean aerators/screens.

Every three months, remove and clean aerators screens at the tip of faucets to remove any build up..

6

Test your water for lead.

Since you cannot see, taste, or smell lead in drinking water, test your water for lead using a U.S. Environmental Protection Agency (EPA)-approved lead test kit or follow instructions from your water provider, if provided.

7

If you are worried about lead exposure.

Contact your local health department or healthcare provider to find out how to be tested for lead.