Lead Service Line Inventory


In 1986, the Safe Drinking Water Act was amended by Congress, prohibiting the use of pipes, solder, or flux that were not "lead-free" in public water systems or plumbing in facilities providing water for human consumption. However, homes built before 1986 may still have lead pipes in the customer-owned section of the line between the water meter and the home.

In 2021 the EPA released the Lead and Copper Rule Revision (LCRR) that requires agencies to develop an inventory of water service lines, both on the utility-owned side and the customer-owned side. The deadline for completing this inventory is October 16, 2024.

While the Mukilteo Water and Wastewater District has records for the utility-owned side of service lines, we do not maintain records for the customer-owned side.

Request for Assistance

We seek your assistance in gathering essential information to help establish the District’s Lead Service Line Inventory for EPA compliance. If your service line was installed before the 1986 Lead Ban, please complete the form below to provide critical details about your property and water service lines. 

For more information about service lines and how to identify material, please see below.

What is a service line?

The service line connects the water main to the property. The District owns from the main to the meter portion of the service line and the customer owns from the meter to the house. 


How do I identify my service line material?

One effective material identification of service lines is physical inspection. Service line pipes are often visible where they enter homes, either through a basement wall, floor, or at the water meter. Lead pipes have distinct characteristics – they appear dull gray and are exceptionally soft.

Scratching lead with a key will result in a bright silver color. Additionally, lead does not attract even a strong magnet.

Source: DC Water