Performing the required sampling and testing of public water systems is the primary means of evaluating compliance with the standards and the safety of the drinking water supply. All compliance samples for public drinking water systems must be collected by a certified sampler and analyzed at a certified laboratory.

• Water Sampler Certification
• Certification of Drinking Water Laboratories
• Drinking Water Sampling Training Video

For more information, contact​ mde.labcertification@maryland.gov​​​   

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