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Caroline County, Maryland

Licensed Septic Companies in Caroline County, MD

35 septic companies serve Caroline County, Maryland, and 35 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 Caroline County

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

35 septic companies in Caroline County

Denton 14

  • Abel Envirotech

    811 Sundayt Dr, Denton, MD

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

    Per state license: Installation · Aerobic systems

    (410) 479-1078

  • Acer Environmental Assessments, LLC

    26268 Baker Rd, Denton, MD

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

    Per state license: Installation · Aerobic systems

    (410) 829-5501

  • Arthur Knipple & Sons

    9746 Foy Rd, Denton, MD 21629

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

    Per state license: Installation · Aerobic systems

    (410) 479-1917

  • Baltimore Washington Contracting

    10290 Log Cabin Rd, Denton, MD 21629

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

    Per state license: Installation · Aerobic systems

    (443) 844-7425

  • Caroline CHD

    403 S. 7th St. Rm248, Denton, MD

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

    Per state license: Installation · Aerobic systems

    (410) 463-8536

  • Caroline County Hd

    403 South 7Th Street, Denton, MD

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

    Per state license: Installation · Aerobic systems

    (410) 479-8045

  • Choptank Excavating LLC

    802 Crystal Ave, Denton, MD 21629

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

    From their website: Installation · Perc testing Per state license: Aerobic systems

    (410) 479-1223 choptankexcavating.com

  • Draper Construction & Contracting LLC

    5845 Laurel Grove Rd, Denton, MD 21629

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

    Per state license: Installation · Aerobic systems

    (443) 786-9065 dccsiteworks.com

  • Hobbs Contractors Inc

    26425 Hobbs Rd, Denton, MD

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

    Per state license: Installation · Aerobic systems

    (410) 479-0914

  • Hobbs Contractors Inc

    26245 Hobbs Rd, Denton, MD

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

    Per state license: Installation · Aerobic systems

    (410) 479-0416

  • J Darling

    10870 Greensboro Rd, Denton, MD

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

    Per state license: Installation · Aerobic systems

    (410) 479-1664

  • Kiblers Excavating

    25464 Smith Landing Rd, Denton, MD

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

    Per state license: Installation · Aerobic systems

    (410) 479-0803

  • Richard Breeding Excavating

    826 Crystal Ave, Denton, MD

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

    Per state license: Installation · Aerobic systems

    (410) 479-0145

  • Towers Concrete Products Inc.

    26425 Hobbs Road, Denton, MD 21629

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

    Per state license: Installation · Aerobic systems

    (443) 786-0594

Federalsburg 6

  • J Smith & Sons

    4841 Preston Road, Federalsburg, MD

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

    Per state license: Installation · Aerobic systems

    (410) 355-2925

  • J Smith & Sons

    4841 Preston Road, Federalsburg, MD

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

    Per state license: Installation · Aerobic systems

    (443) 786-1230

  • James Mowbray

    115 Reliance Ave, Federalsburg, MD

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

    Per state license: Installation · Aerobic systems

    (410) 754-9267

  • Mark Breeding Excavating

    27970 Line Rd, Federalsburg, MD

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

    Per state license: Installation · Aerobic systems

    (410) 754-0246

  • Mowbray Backhoe

    6942 RELIANCE rd, Federalsburg, MD

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

    Per state license: Installation · Aerobic systems

    (410) 829-1597

  • Reliance Treated Wood

    P. O. Box 249, Federalsburg, MD

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

    Per state license: Installation · Aerobic systems

    (410) 754-5711

Greensboro 4

  • Bishop'S Backhoe And Plumbing Inc

    12552 Knife Box Rd, Greensboro, MD

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

    Per state license: Installation · Aerobic systems

    (410) 482-2195

  • Chesapeake Maint. LLC

    14478 Union Rd, Greensboro, MD

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

    Per state license: Installation · Aerobic systems

    (410) 924-5204

  • David Good Excavation

    12122 Kibler Rd, Greensboro, MD

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

    Per state license: Installation · Aerobic systems

    (410) 479-3604

  • Village H20

    11599 Kibler Rd, Greensboro, MD

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

    Per state license: Installation · Aerobic systems

    (856) 469-7160

Preston 4

  • Bryan Farm

    4303 Langrell Road, Preston, MD

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

    Per state license: Installation · Aerobic systems

    (410) 310-1563

  • East Coast Excavating & Landscaping, LLC

    21210 Dover Bridge Rd, Preston, MD

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

    Per state license: Installation · Aerobic systems

    (410) 820-4255

  • East Coast Excavation

    21210 Dover Bridge Rd, Preston, MD

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

    Per state license: Installation · Aerobic systems

    (410) 310-6229

  • Prettyman Manor

    21269 Dover Bridge Rd #6, Preston, MD

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

    Per state license: Installation · Aerobic systems

    (410) 822-2834

Henderson 3

  • Crystal Custom Homes Ltd

    25065 Taylor Rd, Henderson, MD

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

    Per state license: Installation · Aerobic systems

    (410) 482-9434

  • Korell Inc

    16889 Steele Rd, Henderson, MD

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

    Per state license: Installation · Aerobic systems

    (410) 482-6320

  • R A Parks Construction LLC

    25380 Goldsboro Road, Henderson, MD

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

    Per state license: Installation · Aerobic systems

    (410) 310-1214

Marydel 3

  • Shore Quality Contracting LLC

    27178 Temple Rd, Marydel, MD

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

    Per state license: Installation · Aerobic systems

    (443) 926-1402

  • Vasquez Landscaping Inc

    26865 Reservoir Dr, Marydel, MD 21649

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

    Per state license: Installation · Aerobic systems

    (410) 482-2250 vasquezlandscapinginc.com

  • Ward Plumbing & Septic

    703 Duhamel Corner Rd, Marydel, MD 21649

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

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

    (410) 438-3317 wardplumbingandseptic.com

Goldsboro 1

  • T & C Contractors

    15249 Oakland Rd, Goldsboro, MD

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

    Per state license: Installation · Aerobic systems

    (410) 829-5778

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 Caroline County and whether the permit fee is in their quote.

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

Septic companies in Caroline County: common questions

How many licensed septic companies are in Caroline County, MD?

35 septic companies serve Caroline County, Maryland, and 35 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 install septic systems in Caroline County?

35 listings in Caroline County 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.