Looking Your Own Address Up

First, work out who your water system is

It is the name on the water bill, and if the water is included in rent it is the name on the annual water quality report that gets delivered or posted each year. In most places it is a city department or a regional authority; in some it is a small district serving a few hundred connections.

You need the system, not the town. They are frequently not the same thing and a search for the town name alone can land you on the wrong utility.

If it serves more than 50,000 people

EPA requires that system to post its inventory online, so there will be a page. It is usually a map or a search box that takes a street address and returns a category for the system side and the customer side of your line.

Search for the system’s name together with the phrase service line inventory. You are looking for the utility’s own site, not a news article about it.

Source: U.S. EPA, Service-Line Inventory and Replacement Requirements, Lead and Copper Rule Improvements fact sheet, October 2024.

If it is smaller than that

Then the inventory still has to be publicly accessible, but it may not be on a website. Telephone the utility and ask for the service line inventory entry for your address. Some make it available at their office, some will mail it, and some will simply read it to you.

It is a routine request and they are required to be able to answer it.

What you get back

A category for your line, and often a separate one for each side of the property boundary, because the two halves can be different materials and frequently are. You may also get a category for the connector, the short piece at the main.

Read what unknown actually means before drawing a conclusion from it, and what the galvanized category means if that is what comes back, because it is the least self-explanatory of the four.

If you think it is wrong

Tell them. EPA requires the annual notice to include instructions for consumers to notify the water system if they think the material categorization is incorrect, which means there is a defined route for exactly this and somebody at the other end of it.

Useful evidence is anything documentary: a plumbing invoice, a permit, a photograph taken when the yard was open, the year the line was replaced. A utility that has an unknown at your address is being asked to guess, and you may hold the only record that exists.

Source: U.S. EPA, Public Education Requirements, Lead and Copper Rule Improvements fact sheet, October 2024.