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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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Find a MassDEP Certified Laboratory  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 

310 CMR 42.00: Certification and Operation of Environmental Analysis Laboratories 
Cryptosporidium Laboratory Registration Form Application (LT2SWTR) (English, DOCX 106.76 KB)
Summary Report of the First Low-Level Perchlorate Proficiency Test Study Conducted by the Massachusetts Department of Environmental Protection (English, PDF 234.69 KB)

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