Oakland, Maryland

Licensed Septic Companies in Oakland, MD

16 septic companies serve Oakland, Maryland, and 16 of them hold a Maryland septic license or certification matched to the Maryland Department of the Environment list (data as of October 2026).

Septic services in Oakland

Guides: Septic tank pumping · Septic system installation · Aerobic septic systems · Installation cost · Pumping cost

16 septic companies in Oakland

  • API Construction

    108 Matthew Rd, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 466-4391

  • Ashby Property Services

    769 Crellin Mine Rd, Oakland, MD 21550 · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 501-3882

  • Denrock

    133 Tannery Rd, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 616-4178

  • Ez Excavating

    1499 Gnegy Church Road, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 616-5962

  • Ez Excavating LLC

    1499 Gnegy Church Road, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 616-2940

  • Frank Arnold Contractors / Arnold Bros. Equipment

    151 Oakland Dr, Oakland, MD 21550 · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    From their website: Pumping Per state license: Installation · Aerobic systems

    (301) 334-2450 arnold-bros.com

  • G M Agri Service

    2482 Sand Flat Rd, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 710-2606

  • Hanline Excavating

    2327 Herrington Manor Rd, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 616-0429

  • K & R Enterprises, LLC

    182 Youghiogheny Rd, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 616-7988

  • Norman Hanline Excavating

    1018 John Drive, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 334-7875

  • Rinker Construction LLC

    114 Keefer Rd, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 616-8484

  • Robert Beitzel Excavating

    20 Lumber City Rd, Oakland, MD 21550 · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 334-6326 beitzelexcavatingandpaving.com

  • Rush Excavating

    808 Sand Flat Rd, Oakland, MD 21550 · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 334-1399

  • Underwood Excavating

    332 Leon White Rd, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 616-0462

  • Underwood Excavating LLC

    Po Box 712, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    (301) 616-0913

  • Potomac Excavating

    157 Allen Marple Dr, Oakland, MD · Garrett County

    • Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)

    Per state license: Installation · Aerobic systems

    No phone on the state list

Septic licensing in Maryland

Maryland certifies installers of nitrogen-reducing BAT septic units; installers also need the unit maker's certification, and some counties require a local license. The Maryland Department of the Environment issues these credentials: BAT (Best Available Technology) certified installer; County septic installer licenses in some counties.

Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Oakland and whether the permit fee is in their quote.

Maryland septic licensing: agencies, license types and how to check a license →

Septic companies in Oakland: common questions

How many licensed septic companies are in Oakland, MD?

16 septic companies serve Oakland, Maryland, and 16 of them hold a Maryland septic license or certification matched to the Maryland Department of the Environment list (data as of October 2026). Each license badge on this page names the agency and links to its lookup so you can confirm it.

Who licenses septic contractors in Maryland?

Maryland certifies installers of nitrogen-reducing BAT septic units; installers also need the unit maker's certification, and some counties require a local license. The licensing body is the Maryland Department of the Environment.

Which companies pump septic tanks in Oakland?

1 of the 16 listings in Oakland offer septic tank pumping, either on their own website or under a state pumper license. Use the service filter above to show only those companies.

Which companies install septic systems in Oakland?

16 listings in Oakland install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their Maryland license.

How do I check a septic contractor's license in Maryland?

Use the Maryland Department of the Environment's lookup (https://mde.maryland.gov/programs/water/BayRestorationFund/OnsiteDisposalSystems/Pages/index.aspx) and search the contractor's name or license number. Our guide to checking a septic license walks through it.