Plumbing and faucets

Your plumbing and faucets can be sources of lead.

Lead pipes

Plumbing done before 1930 used lead pipes. 

  • Lead from these pipes can seep into drinking water.
  • Minneapolis water forms a thin scale inside your pipes.
  • The thin scale prevents lead from seeping into your water.


Lead service lines

  • A service line is the water pipe that connects the water main on your street to the piping inside your home.
  • It connects to stop box on the exterior of your home. We use the stop box to turn your water on or off without entering your home.
  • In Minneapolis, service lines installed before 1930 usually used lead piping.
    • The part that extends from the water main to the stop box is lead.
    • The part that connects the stop box to the water meter is usually galvanized steel.

You are responsible for your service line

  • Property owners are responsible for maintaining water service lines.
  • You can't repair lead service lines. You can only replace them.  
  • To find out if you service line is lead, contact Utility Connections.

Contact the Minneapolis Public Works Utility Connections

Lead faucets

  • Most faucets purchased before 1997 were are brass or chrome-plated brass. They contain up to 8% lead.
  • Faucets purchased after 1997 have less or no lead.
  • If a faucet has NSF 61/9 stamped on its box, the faucet is lead-free. 

Read NSF/ANSI/CAN 61, Section 9: Mechanical Plumbing Devices




  • We take a many steps to prevent pipe corrosion
  • We follow of Department of Health guidelines, including:
    • Adding a chemical called ortho polyphosphate to your water.
      • This chemical prevents water line corrosion. 
      • We maintain an ortho phosphate concentration of 0.4 parts per million.
    • Reducing the acidity of the water from the Mississippi River.
      • We maintain a pH of 8.8 to 9.0 to keep the water from being corrosive.

Read the Minnesota Department of Health's 2019 report on eliminating lead in drinking water

Contact us

Public Works Water Treatment & Distribution Services


For water emergencies


For water quality information



4300 Marshall St. NE
Fridley, MN 55421

This building is closed to the public.

Utility Connections

Public Works


Minneapolis Public Service Building
505 Fourth Ave. S
Minneapolis, MN 55415