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Massachusetts Department of Environmental Protection

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Certified Laboratories

Drinking Water Laboratory Certification Policies & Guidance

Policies and guidance documents through MassDEP's Drinking Water Program for the Certification of Laboratories Testing Public Drinking Water

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Policies and Guidance

Guidance for Compliance with Ethics Training Requirement of 310 CMR 42.00 (PDF 367.7 KB)

Memorandum on Revised Massachusetts Regulations for the Certification and Operation of Environmental Analysis Laboratories at 310 CMR 42.00 (PDF 103.16 KB)

Rapid Determination of E. coli in Drinking Water Under the Total Coliform Rule in Massachusetts (PDF 1.61 MB)

Certification for the Analysis of Enterococci (Presence/Absence) in Ground Water Source Samples (PDF 144.13 KB)

Cover letter, Laboratory Certification Policies on Proficiency Testing: Chemistry and Microbiology (PDF 151.96 KB)

WES-14.001 - Laboratory Certification Office Policy on Chemistry Proficiency Testing (PDF 86.14 KB)

WES-14.002 - Laboratory Certification Office Policy on Microbiology Proficiency Testing (PDF 114.22 KB)

New England Certification Officers Checklists

New England Certification Officers' Chemistry Checklists (PDF 75.61 KB)

New England Certification Officers' Microbiology Checklist (PDF 157.21 KB)