Lead, galvanized requiring replacement, non-lead or unknown: what your service line status means
Updated November 2, 2026
What does "lead status unknown" mean on my water bill or inventory map?
It means the utility has no reliable record of what your service line is made of. It is not a finding that the line is safe. The utility has to identify it, and you can speed that up by sending a photo of the pipe at your meter.
Every community water system in the U.S. had to publish an inventory of its service lines by October 16, 2024. Your address now carries one of four labels. Here is what each one means for you and what to do next.
The four categories
| Label | What it means | Will it be replaced? |
|---|---|---|
| Lead | Some part of the line, on either side of the property line, is lead. | Yes. Federal rules require it by 2037 in most systems. |
| Galvanized requiring replacement (GRR) | A galvanized steel line that is, or ever was, downstream of a lead pipe or lead connector, or whose history isn't known. | Yes, treated like lead. |
| Non-lead | Records or an inspection show copper, plastic or another non-lead material on both sides. | No. |
| Lead status unknown | The utility has no reliable record of the material on one or both sides. | The utility must identify it. If it turns out to be lead or GRR, yes. |
"Unknown" does not mean safe
Unknown lines are common in older neighborhoods where tap cards were lost or never kept. Utilities have to keep investigating them, using records, inspections, statistical models or small test digs, and move each one into another category. Until then, treat an unknown line in a pre-1986 home as possibly lead: use a certified filter for drinking water and ask for a free test.
Why galvanized lines are on the list
Galvanized steel has a rough inside surface. If lead pipe or a lead connector was ever upstream of it, lead particles can build up in the scale and break loose later. That is why the EPA counts these lines as needing replacement even though the pipe itself isn't lead. See galvanized vs. lead for how to tell them apart.
Each side of the line can be different
Many inventories list the utility side and the customer side separately. A home can be copper inside and lead under the street, or the reverse. Your overall status is the worse of the two. The ownership guide shows where the split usually falls.
How to get your status corrected
- Do the scratch and magnet test on the pipe where it enters your home.
- Take a clear photo of the pipe next to the meter, with the scratch visible.
- Send it through your utility's self-identification form or email. Many utilities have one, and some send a technician for free.
- Ask for written confirmation of the updated status, which helps if you sell the house.
Notices you will get
Utilities must notify every customer served by a lead, GRR or unknown line, and repeat the notice every year until the line is replaced or confirmed non-lead. If you got one, read what the letter means.
Sources: EPA: Lead and Copper Rule Revisions, EPA: Lead and Copper Rule Improvements, EPA inventory guidance
Common questions
What does "lead status unknown" mean on my water bill or inventory map?
It means the utility has no reliable record of what your service line is made of. It is not a finding that the line is safe. The utility has to identify it, and you can speed that up by sending a photo of the pipe at your meter.
What is a galvanized line requiring replacement?
A galvanized steel service line that is or ever was downstream of a lead pipe or lead connector, or whose history is unknown. Lead particles can collect inside it, so federal rules require it to be replaced like a lead line.
Can I get my service line status changed from unknown to non-lead?
Yes. Most utilities accept a photo of the pipe where it enters your home, and some send a technician. Ask for written confirmation of the change.
Find your city's program
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