Remember to send out your 2025 Service Line Inventory (SLI) Consumer Notices this year!
This is a reminder for Public Water Systems (PWS), if your PWS has lead, Galvanized Requiring Replacement (GRR), and/or unknown service lines in your SLI, you must send out SLI Consumer Notices annually. This is a new recurring requirement under the Lead and Copper Rule Revisions (LCRR). 2025 SLI Consumer Notices must be distributed by December 31, 2025! Templates are available on the Lead and Copper Forms and Templates webpage, which were updated June 2025.
If your system has identified any unknowns, or replaced any lead/GRR service lines, your PWS is
encouraged to submit an updated SLI a few days before distributing your consumer notices, so when
your system certified their distribution next year, MassDEP has an accurate, updated SLI to compare
your certification form to. This limits the back and forth required to review your certification form and
expedites your form approval.
Compliance Responsibilities for PWS During the Interim LCRR to LCRI Process
Since we are in an interim period, where PWS are operating under 2 different Lead and Copper
Regulations, and preparing for a third, we know this can be confusing to PWS who are aiming to be
compliant with all state and federal regulations!
See September’s ITM for a full breakdown of PWS responsibilities for each of the 3 current and upcoming
lead and copper regulations: In the Main (Drinking Water Program Updates) 09-19-2025.
MassDEP/DWP Contacts
For all questions on LCR, LCRR and LCRI, please contact the Drinking Water Program at
program.director-dwp@mass.gov