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 of your home.
  • It connects to the 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're responsible for your service line

  • Property owners are responsible for maintaining water service lines.
  • You cannot repair lead service lines. You can only replace them.  
  • To find out if your service line is lead, contact Water Distribution.

Contact Water Distribution


We take 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

Lead faucets

  • Most faucets purchased before 1997 were 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

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.