Mass Lead Service Line Identification (MA-LSLI) Web App

MA-LSLI is a simple form meant to be used by the general public in Massachusetts to help identify the materials that make up their drinking water service line. The drinking water service line is the pipe that runs from the water main in the street to the home. As part of EPA's Lead and Copper Rule Revisions, water suppliers in Massachusetts are required to put together a full inventory of the drinking water service line materials that make up the water system by the end of 2024.


In order to assist in this data collection effort Lead Smart was created by the Massachusetts Department of Environmental Protection (MassDEP) to help water suppliers collect the data they need.


If your water supplier enrolled in the use of MA-LSLI you should have been notified and directed to use MA-LSLI by your water supplier. If your water supplier is not listed in the list of water suppliers that means your water supplier has not enrolled to use the service and unfortunately you won't be able to make a submission.


All submissions made using MA-LSLI are accessible only by designated staff at your water system.

Follow the EPA guide to identify your service line material

Before filling out this form you should review and follow the instructions in the EPA guide "Protect Your Tap: A Quick Check for Lead" at https://www.epa.gov/ground-water-and-drinking-water/protect-your-tap-quick-check-lead-0 (you should copy/paste the url in a new browser tab) for identifying your service line material. It's okay if you are not 100% certain of the material. Your water utility will follow-up with you if necessary.

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Enter the address of the building/house where the service line is located. DO NOT enter city, state, or zip code in this field. Example: 123 Elm Street

Select the official town for the street address above.


For example, for an address in Dorchester, the official city/town is Boston; Dorchester is a neighborhood, not an official city or town.

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Select the water supplier that supplies drinking water to your residence.


IF YOUR WATER SYSTEM IS NOT LISTED, THIS MEANS YOUR WATER SUPPLIER HAS NOT SIGNED UP TO USE THIS SERVICE.

DO NOT SELECT A RANDOM WATER SUPPLIER.

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If known, enter the year the building/house was constructed. Example: 1953

Following the EPA Guide "Protect Your Tap: A Quick Check for Lead" at https://www.epa.gov/ground-water-and-drinking-water/protect-your-tap-quick-check-lead-0 (you should copy/paste the url in a new browser tab) select the material of your service line. If you are unsure it's okay to select the material you believe it to be. If necessary your water utility will follow-up with you.

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