Code of Massachusetts Regulations
310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION
Title 310 CMR 22.00 - Drinking Water
Section 22.11A - Laboratoy Certification

(1) No laboratory shall conduct the analyses of drinking water required by 310 CMR 22.00 nor report them to the Supplier of Water or to the Department for the purpose of complying with 310 CMR 22.00 unless the Department has certified the laboratory to conduct analytical measurements, pursuant to 310 CMR 42.00: Certification and Operation of Environmental Analysis Laboratories except that measurements of Turbidity, chlorine residual, temperature, pH, alkalinity, calcium, conductivity, orthophosphates, silica and other analyses for the control of treatment works for Public Water Systems may be performed by any employee or agent of the Public Water System whom the Department designates as competent and authorized to perform such analyses. No sample shall be considered for the purpose of determining compliance with 310 CMR 22.00 if the sample was analyzed by a laboratory not certified pursuant to 310 CMR 42.00: Certification and Operation of Environmental Analysis Laboratories, or analyzed by an unapproved analytical method. All sample results submitted to the Department shall be on forms specified and approved by the Department. Certified laboratories, or other agents approved by the Department, shall provide chain of custody, collection containers of the recommended size, quality and construction for the collection of drinking water samples, as well as any required preservative.

(2) The Department may accept results of analyses performed by laboratories which are certified by the EPA or any other certification authority approved by the Department. Such laboratories must continue to participate in performance evaluation studies and in laboratory intercomparison cross check studies which include the analyses for which the laboratory is certified or seeking certification.