Home and building plumbing
The pipes between the street and your glass belong to the building. No public system file can vouch for them.
Public main
system records may cover this
Service line
to the building
Building plumbing
your building’s own context
What people notice
Older homes, service lines, solder, and fixtures can affect taste, colour, or metals at the tap even when the public system looks fine on paper.
What records usually show
Some places have lead-related samples or city lead-control notes. They still describe the public program or system samples — not a full map of your walls.
What you can do
- Ask your city about service-line records or replacement programs for your address.
- If certainty matters, have your own tap tested.
- Education only on filters: plumbing-focused filtering.