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Contractors installing sewage disposal systems in the State of Maryland are required to be registered with the State Board of On-Site Wastewater Professionals.ย  The registration application can be found on the Maryland Department of the Environment (MDE) website or by contacting Garrett County Environmental Health. Contractors who are also interested in or have previously installed at-grade or sand mound sewage disposal systems must attend the required MDE training to be certified to do so.ย  Attached are the courses to become certified or to renew registration. These courses are only offered once a year and have limited registration. Contact Environmental Health at 301-334-7760 or [email protected] for additional information.


Please see the attached PDFs for additional information and registration links:

At Grade Installer Certification Training Course:
https://garretthealth.org/wp-content/uploads/2024/02/2024-Full-At-Grade-Installer-Course-Flyer-FINAL.pdf

2024 Virtual At-Grade Mound Renewal Courses:
https://garretthealth.org/wp-content/uploads/2024/02/2024-AGRC-Flyer-FINAL.pdf

Full In Person Sand Mound Installer Certification:
https://garretthealth.org/wp-content/uploads/2024/02/2024-Full-Sand-Mound-Installer-Course-Flyer-FINAL.pdf

2024 Virtual Sand Mound Renewal Courses:
https://garretthealth.org/wp-content/uploads/2024/02/2024-SMRC-Flyer-FINAL.pdf

John Corbin (BS, CPT, MCPT, CSNC)
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