Mechanicsville, Maryland

Licensed Septic Companies in Mechanicsville, MD

21 septic companies serve Mechanicsville, Maryland, and 21 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 Mechanicsville

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

21 septic companies in Mechanicsville

  • Ark & Dove Excavation, LLC

    40376 Wolfe Dr, Mechanicsville, MD 20659 · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 997-6034

  • Buckler Excavating

    26778 Mechanicsville, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 884-3855

  • C L Boswell Jr Septic

    38170 Laurel Ridge Dr, Mechanicsville, MD 20659 · St. Mary's County

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

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

    (301) 645-9549 clboswelljrseptic.com

  • Darbie & Sons Excavating Inc

    10405 Paramore Pl, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 672-2259

  • David W Griffin

    40727 Colonial Ct, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 904-1959

  • Eddie Guy Septic

    Po Box 421, Mechanicsville, MD 20659 · St. Mary's County

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

    From their website: Pumping · Installation · Repair · Drain field · Perc testing Per state license: Aerobic systems

    (301) 884-3306 eddieguyseptic.com

  • Eugene Copsey Plumbing & Septic

    Po Box 33, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 884-3239

  • Guy Excavating LLC

    27624 Durango Court/PO Box 746, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 904-6141

  • Homefirst

    26550 N Sandgates Rd, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 751-5875

  • J. M. Tennyson Construction

    39039 Deer Lane, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 904-0347

  • Rel Excavating

    27305 Three Notch Rd, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 481-7905

  • Robert A Dave

    29235 New Market Village Rd, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 884-4165

  • Septic Solutions, LLC

    26439 Morganza Turner Rd, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 997-1000

  • Silver Creek Mechanical Services

    26830 Budds Creek, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (202) 437-7216

  • Silver Creek Mechanical Services

    26830 Budds Creek, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (757) 343-5757

  • Smc Hvac Svc, Inc T/A Southern Md Concrete

    29100 Tye Way, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 399-2312

  • SOMD Septic LLC

    26420 North Sandgates Rd, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (443) 532-8609

  • Stanley L Long

    40255 Stanley La, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 884-0639

  • Walker Site Maintenance

    29865 Washington Rd, Mechanicsville, MD · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 751-1703

  • Wayne'S Drains & Backhoe Service

    27110 Mary Valinda La, Mechanicsville, MD 20609 · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 884-5592 facebook.com

  • Wm Suite Excavating Inc

    26975 Laurel Grove Rd, Mechanicsville, MD 20659 · St. Mary's County

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

    Per state license: Installation · Aerobic systems

    (301) 884-4467

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 Mechanicsville and whether the permit fee is in their quote.

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

Septic companies in Mechanicsville: common questions

How many licensed septic companies are in Mechanicsville, MD?

21 septic companies serve Mechanicsville, Maryland, and 21 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 Mechanicsville?

2 of the 21 listings in Mechanicsville 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 Mechanicsville?

21 listings in Mechanicsville 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.