Certification of Drinking Water Laboratories

The Maryland Department of the Environment (MDE) maintains a State program for the certification of laboratories conducting analyses of drinking water compliance samples. In order to be eligible to analyze compliance samples under the Safe Drinking Water Act, laboratories must meet the minimum criteria specified by the United States Environmental Protection Agency (EPA) Manual for the Certification of Laboratories Analyzing Drinking Water, 5th edition, January 2005, and regulations put forth in the Code of Maryland Regulations (COMAR).

Contact Information

          Taj Goodlow
          Laboratory Certification Program
          Maryland Department of the Environment
          Water Supply Program - WSA
          1800 Washington Blvd., Suite 450
          Baltimore, Maryland 21230-1708
          Phone: (410) 537-3712
          Fax: (410) 537-3157

Certified Laboratories

Laboratory Certification Applications and Forms

  • Applications for Drinking Water Lab Certification in the State of Maryland:
    • New Laboratory Application 
      • ​Use for In-State Labs requesting initial certification for Maryland.  
      • ​Also use for In-State Labs that were previously dissolved and would like to reinstate drinking water certification in Maryland.
    • In-State Renewal Application
      • Use for In-State Labs requesting to maintain existing certification for Maryland (required annually).
    • Out-of-State Renewal Application
      • ​Use for Out-of-State Labs requesting to maintain existing certification for Maryland (required annually).
      • ​Also use for Out-of-State Labs requesting initial/new certification for Maryland.  
  • Forms associated with the Lab Certification process above:

Law and Regulations


Public Drinking Water Sampler Certification 
Public Drinking Water Sampler Certification Seminar:  This certification assures the reliability of the Safe Drinking Water Act compliance samples submitted to state certified laboratories. Performing the required sampling and testing of public water systems is the primary means of evaluating the safety of the drinking water supply.

This certification is primarily for laboratory personnel, municipal and private water system operators and superintendents, and county and state health department staff.​