How to check your utility's service line inventory for your address

The fastest way to check your address is to use your water utility’s service line inventory map or lookup tool, if it has one. Under federal lead rules, water systems had to submit initial service line inventories by October 16, 2024, and those inventories classify service lines as lead, galvanized requiring replacement, non-lead, or lead status unknown. (epa.gov)

If you do not see an online map, do not assume the information does not exist. Water systems serving more than 50,000 people must post the inventory online, but smaller systems can make it public in other ways, including by mail or at the utility office. (epa.gov)

What the inventory is really telling you

A service line inventory is a record of the pipe that brings drinking water from the water main to a home or building. Federal guidance says the inventory must cover all service lines and, where ownership is split, show the material on both the system-owned side and the customer-owned side. That matters because many homeowners are responsible for the private side even when the utility owns the street side. (epa.gov)

The basic categories are straightforward, but the way utilities display them can vary. EPA uses four material classes: lead, galvanized requiring replacement, non-lead, and lead status unknown. Some local maps use slightly different labels. Philadelphia, for example, uses “Incomplete Records” for what it previously called “Unknown.” (epa.gov)

Also, one address does not always equal one simple pipe answer. Philadelphia explains that material can differ along the length of the service line, so it reviews information from two points and assigns an overall status for the property. That is one reason a map result is useful, but not always the last word. (water.phila.gov)

Where to look for your address

Start with your own water utility. Many utilities now have a searchable map where you enter your street address and open a pop-up with details. Philadelphia’s instructions are simple: agree to the disclaimer, enter your address, and read the pop-up box for details about your property. Minneapolis also has a public map that lets residents search an address and open a symbol near the property to verify the result. (water.phila.gov)

If your utility’s website is hard to navigate, check your annual Consumer Confidence Report, sometimes called a CCR. EPA guidance says community water systems must include a statement that they prepared a service line inventory and instructions for how to access it. If your home is served by a lead, galvanized requiring replacement, or unknown service line, the utility must also notify persons served at that connection within 30 days after completing the initial inventory and then repeat the notice every year until the line is no longer in one of those categories. (epa.gov)

In some places, the state may also host a statewide map or data portal. California’s State Water Resources Control Board publishes statewide service line inventory data and an interactive map and dashboard, while also telling users to contact their water provider with questions about a specific service line. Other states may do something similar, or may leave address lookup entirely to local utilities. For state-by-state program pages, start with our state directory. (waterboards.ca.gov)

A simple checklist for checking your address

Use this quick process:

1. Find the name of the water utility on your water bill or tenant paperwork.
2. Search the utility website for “service line inventory,” “lead service line map,” or “service line lookup.”
3. Enter your full street address exactly as the utility uses it.
4. Read both sides of the result if the utility splits the line into utility-owned and customer-owned sections.
5. Open the pop-up or details panel and look for the material category, notes, and last update date if shown.
6. Save a screenshot for your records.
7. If the result says unknown, incomplete, or does not match what you see at home, look for a correction form, research request, or self-report option. (minneapolismn.gov)

That last step matters. Minneapolis says unknown means there is a valid address, but the matching service line record is not available, and it encourages residents to request further research on the address. EPA guidance also recommends ways for utilities to accept customer corrections and photo evidence. (minneapolismn.gov)

How to read the result on the screen

Lead means the utility believes the service line, or a portion of it, is made of lead. If the inventory shows separate public and private sides, check both. A lead private side still matters, even when the utility side is not lead. (epa.gov)

Galvanized requiring replacement usually means a galvanized line may have picked up lead from an upstream lead line or from a line with an uncertain past. California’s statewide guidance explains that a downstream galvanized pipe can adsorb lead and contribute lead to drinking water in those situations. (waterboards.ca.gov)

Non-lead means the utility has enough evidence to classify the service line as non-lead rather than lead or galvanized requiring replacement. In Philadelphia, a line is categorized as non-lead only after the utility verifies material at at least two points along the line. (water.phila.gov)

Unknown or Incomplete Records means the utility does not yet have enough information to say for sure. That is not the same as safe, and it is not the same as lead either. Some utilities urge caution while more research is done. Philadelphia says incomplete records should be treated as a lead service line for health and safety. (epa.gov)

If your result is unclear, compare it with How to tell if your water service line is lead. A quick visual check at the point where the pipe enters the home can help you ask better questions, though your utility’s inventory remains the official record unless it is updated. (epa.gov)

What to do if the record looks wrong or incomplete

Do not panic, but do follow up. Utilities build inventories from old records, field inspections, permits, meter work, and other evidence. Philadelphia says its map is compiled from multiple sources and may be updated over time as more information comes in. It also notes that no identification method is 100% accurate and that more work may be needed to verify the material. (water.phila.gov)

Many utilities now accept homeowner input. Philadelphia has a form where residents can report what they found at the meter or submit a record for a buried section of service line, including a photo or plumber’s report. Minneapolis invites residents with an unknown result to request more research on their address. EPA guidance describes customer submission forms and photo evidence as useful ways to improve the inventory. (water.phila.gov)

That means your next step is usually one of these: send a correction request, submit photos, or ask the utility what proof it needs to change the record. If you need replacement estimates or are comparing responsibility rules first, these guides may help: Who pays to replace the private side of a lead service line? and Lead service line replacement grants, reimbursements and loans.

If you are making a permit, funding, sale, or replacement decision, confirm the current status with your water utility, state drinking water office, or local building department where appropriate.

What to do if your address comes back lead or likely lead

First, keep the result. Save the screenshot, note the date, and check whether the utility separates the public side from the private side. Then ask what program applies to your address: a utility-run replacement project, a reimbursement or loan program, or a private-side replacement you arrange yourself. For more on the federal rule behind these steps, see The Lead and Copper Rule Improvements: what homeowners need to know. (epa.gov)

Under EPA’s final Lead and Copper Rule Improvements, approximately 99% of water systems are required to replace lead and galvanized requiring replacement service lines under their control in 10 years or less, although a small number of systems may qualify for a longer deadline. That does not mean every homeowner will have the same timeline or cost share, because ownership and local programs vary. If you hire your own contractor, start with Choosing a utility-approved plumber for lead line replacement. (epa.gov)

Why your answer may change over time

A service line inventory is not supposed to sit still. EPA calls it a living dataset that should be revised as utilities replace lead lines and identify unknown lines. The final LCRI keeps the initial inventory date of October 16, 2024, requires a baseline inventory by November 1, 2027, and says that starting with that baseline public inventory, the record must include the street address of each service line and identified connector, or another unique location identifier where no street address exists. (epa.gov)

After that, water systems must submit and post updates by January 30, 2029, and every January 30 after that, with counts of service line materials and replacements completed in the past year. Some utilities update much more often. Minneapolis says its map data is updated daily. (epa.gov)

So if you checked once and saw “unknown,” check again later, especially after meter work, a main project, a permit, a sale, or a plumber visit. New records and field checks can change the result.

Frequently asked questions

My address says unknown. Should I ignore it?

No. EPA says water systems must keep updating inventories and identify all unknown service lines by the replacement deadline. Minneapolis also says residents with an unknown result can request more research on the address. Treat unknown as unfinished information, not a clean bill of health. (epa.gov)

My map says non-lead. Am I done?

It is good news about the service line, but keep a copy of the result and read the utility’s notes carefully. Utilities may refine records over time, and some, like Philadelphia, rely on multiple data points to confirm non-lead status. If what you see at home does not match the map, ask the utility how to submit updated information. (water.phila.gov)

I rent. Can I still check the inventory?

Yes. The inventory is meant to be publicly accessible, and EPA’s notice rules apply to persons served at the service connection, not only property owners. Renters can look up the address, save the result, and share it with the landlord or property manager. (epa.gov)

What if my utility has no online map?

You still have options. Systems serving more than 50,000 people must post the inventory online, but smaller systems can make it public another way, such as by mail or at the utility office. Your annual CCR should also tell you how to access the inventory. (epa.gov)