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Certified Laboratories

Find laboratories certified by the Massachusetts Department of Environmental Protection (MassDEP) to analyze drinking water.

This page can help you find laboratories that are state-certified to analyze drinkable and non-drinkable water. If you work for a laboratory, you can find certification forms and permits for conducting tests.

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Top tasks

Find a MassDEP Certified Laboratory (for Public Water Systems)  MassDEP-Certified Laboratories for Residential Customers & Private Well Owners (Excel File Download)  Finding a Certified Laboratory Outside Regular Working Hours 

What you need to know

Using MassDEP Certified Laboratories for Private Well Testing   Understanding My Laboratory Results  Laboratory Certification Forms  Drinking Water Laboratory Certification Policies & Guidance  List of MassDEP-Registered Cryptosporidium Laboratories 

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