Many Maine residents access their drinking water from a private well. Well water may contain metals or bacteria harmful to human health. It's recommended to test your private drinking water annually for coliform bacteria, E. coli, nitrates, and nitrites, and every 3-5 years for copper, iron, pH, manganese, lead, arsenic, magnesium, fluoride, chloride, sodium, hardness, uranium, and radon. When testing your drinking water, consider using an accredited laboratory. While there are many great laboratories serving the people of Maine, benefits of using an accredited lab include known testing methods, recognized quality control and assurance practices, and regulatory access, meaning that Maine Laboratory Accreditation Officers are able to assist customers with questions concerning their water test results.
Apply for Laboratory Accreditation
Environmental laboratories that perform compliance testing of public drinking water or wastewater or testing for the Resource Conservation and Recovery Act (RCRA) or the Leaking Underground Storage Tank program (LUST) must be accredited by the Maine CDC. Labs are accredited by the tests they offer (examples: arsenic and bacteria); please confirm the laboratory's accreditation status prior to ordering tests.
Apply or Renew Now
- Application for Initial Laboratory Accreditation (Word)
- Application for Renewal Laboratory Accreditation (Word)
- Application for Revision Laboratory Accreditation (Word)
- Method Analyte Table for Application (Excel)
- EPA Analyte Codes for Drinking Water Contaminants (PDF)
Listings
- In-State Maine Accredited Commercial Laboratories (PDF)
- Laboratories Accredited in Maine to Test for Asbestos, Diquat, Endothall, and/or Radium (PDF)
- Laboratories Accredited in Maine to Test for PFAS in Drinking Water (PDF)
- All Accredited Laboratories
Contacts
- Laboratory Accreditation – Christine Blais: Email christine.blais@maine.gov or phone (207) 287-3220.
- Cannabis Testing Facilities – Felicia Pomiak: Email felicia.pomiak@maine.gov or phone (207) 287-4758
- Clinical Laboratory Improvement Amendments (CLIA) -- Email