Certified Laboratories

Find MassDEP-Certified Laboratories

A searchable online database of certified laboratories for water testing.
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List of Laboratories Approved for Cryptosporidium Analysis under the Safe Drinking Water Act

The US EPA is responsible for certifying water-testing labs to analyze samples for cryptosporidium.
US EPA Website

Laboratory Certification Forms

For laboratories seeking MassDEP certification.
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Laboratory Certification Policies

Guidance and policies governing the certification of testing labs by MassDEP.
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Certified Laboratories Available Outside Regular Working Hours

List of MassDEP-certified labs available for testing services outside regular working hours, with available services and other details. May 2011.
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Rapid Determination of E. coli in Drinking Water under the Total Coliform Rule in Massachusetts.

Testing protocols for E. coli effective December 1, 2009. This revision clarifies colony verification procedures in section 4.0 of the June 2009 document . October 2009.
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Certification for the Analysis of Enterococci (Presence/Absence) in Ground Water Source Samples - May 15, 2009

A new testing certification that will be required under the federal Ground Water Rule beginning in December 2009.
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Laboratory Certification Regulation

310 CMR 42.00 regulates the certification and operation of environmental analysis laboratories.
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MassDEP Private Drinking Water Testing and the Use of MassDEP-Certified Laboratories

Questions and answers for homeowners, boards of health, and licensed well drillers on choosing a lab for water testing.
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Approved Perchlorate Laboratories and Related Information

Laboratories certified to test for perchlorate and other information about this contaminant.
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New England Certification Officers' Microbiology Checklist

Checklists for determining laboratory compliance with certification requirements.
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New England Certification Officers' Chemistry Checklists

Includes checklists for EPA Method 180.1; EPA Method 200.7; EPA Method 524.2
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William X. Wall Experiment Station (WES)

MassDEP's environmental analysis facility, which provides technical and laboratory support to DEP programs and administers the Department's Laboratory Certification program.
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