LeadPipeLookup

Wisconsin › City overview

Lead service lines in Green Bay, WI

81 water utilities serve Green Bay, with approximately 163,552 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
Known lead
0
Galvanized
0
Unknown
0
% unknown
—

Lead Service Lines in Green Bay, WI

Green Bay serves about 163,500 people through 81 water systems. The largest is Green Bay Waterworks, which supplies water to roughly 107,400 residents.

What we know about lead in Green Bay

Lead service lines—the pipes that connect the water main to your home—are a concern in older cities across the US. Green Bay's water systems have not reported confirmed lead service lines to the EPA at this time. However, this doesn't mean lead lines don't exist; it means they haven't been inventoried yet or confirmed in available records.

Galvanized pipes, which can also leach lead, have similarly not been documented in the current data we track.

Why lead matters

Lead is a toxic metal. Even small amounts in drinking water can be harmful, especially to young children and pregnant people. If lead gets into your body, it can affect development, learning, and behavior. There's no safe level of lead exposure.

Most lead exposure from water comes through the service line—the part your water utility owns from the street to your meter, plus any pipes you own inside your home. Lead dissolves into water more easily when water is corrosive (acidic) or when pipes are old and corroded.

What to do now

Your best step is to contact your water utility directly and ask:

  • Does my address have a lead service line?
  • What's the pH and corrosivity of the water?
  • Do you have a lead replacement program or assistance?

If you're in the Green Bay Waterworks service area (the largest system), you can reach them through the city's utilities department. For other systems, search for your utility by name in our database.

Testing your water

If you can't confirm your service line status, consider a free or low-cost water test. Contact your local health department or your utility for guidance.

Next steps for residents

  • Contact your water utility to ask if your address has a lead service line and request a copy of their inventory.
  • Request information about water corrosivity treatment and any lead replacement programs.
  • Test your water if you're concerned, especially if you have young children or are pregnant.
  • Learn more from the EPA's lead in drinking water page or contact the Wisconsin Department of Natural Resources.

---

Utilities serving Green Bay

Common questions

Does Green Bay have lead service lines?

Green Bay's water systems have not reported confirmed lead service lines in available records. However, absence of reported data doesn't mean they don't exist—many older cities haven't completed full inventories. Contact your utility to ask about your specific address.

How do I know if my house has a lead service line?

Your water utility maintains records of service lines by address. Call Green Bay Waterworks or your local utility system directly and ask them to check their records. You can also hire a plumber to inspect the line where it enters your home, though utilities can confirm ownership of the street-side portion.

Is Green Bay water safe to drink?

Green Bay's utilities test and treat water to meet federal safety standards. However, lead from old service lines can enter water even in well-treated systems. If you're concerned about lead, test your water or ask your utility about corrosivity treatment and lead removal options.

What should I do if I think my water has lead?

Contact your water utility immediately. You can also get a water test through your local health department or a certified lab. The EPA recommends using cold, running water for drinking and cooking, and flushing the line before use if water has sat in pipes for more than 6 hours.