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Lead in Drinking Water

What you need to know about lead in drinking water, and what MassDEP is doing about it.

Lead in water lines and fixtures can be a serious health risk. Look here for information about the presence of lead in plumbing and what residents and officials can do.

First time? Start here.

Guide:
Is there lead in my tap water? 

What would you like to do?

Find a Certified Laboratory for Water Testing  Learn about the Water-Smart Program for Lead in School Drinking Water  See Consumer's Frequently Asked Questions about the LCRR Service Line Inventory 

Explore our GIS Maps and Summary Data

Explore the MassDEP Lead in Schools and Early Education Facilities Drinking Water Web Map   Massachusetts Service Line Inventories  
Open XLSX file, 66.83 KB, for Service Line Inventory Summary Data March 2025 (XLSX 66.83 KB)

What you need to know about Lead and Copper

Lead Service Line Replacement  Lead Service Line Survey   Copper and Your Health  Information about the Lead and Copper Rule Revisions   Information about the Lead and Copper Rule Improvements  Lead Reduction Act Update (2011)  Lead and Copper Rule Short-Term Revisions (2007) Requirements  
Open PDF file, 768.56 KB, for Homeowner and Tenant Sampling for Lead in Drinking Water Flowchart (PDF 768.56 KB)

What you need to know about Lead and Copper in Schools

Mitigating Lead in Drinking Water Before the School Season   Sampling for Lead and Copper at Schools and Childcare Facilities  What To Do if Your School or Childcare Facility has Elevated Results   Proper Care of Bottled Water and Dispensers for Schools  Water Infrastructure Improvements for the Nation Act (WIIN Act)  School Drinking Water Sampling Results   About the Lead Contamination Control Act  

What you need to know about Public Water System Sampling

Results of Lead Sampling for Public Water Systems   Lead and Copper Rule (LCR) Sampling  Lead & Copper Forms and Templates 

Additional Resources

Contact Information

Online

MassDEP Drinking Water Program Email MassDEP Drinking Water Program at program.director-dwp@mass.gov

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