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Charles County, Maryland

Licensed Septic Companies in Charles County, MD

47 septic companies serve Charles County, Maryland, and 47 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 Charles County

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

47 septic companies in Charles County

Waldorf 9

  • Ajcs, Plc

    7 Post Office Rd Ste G, Waldorf, MD

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

    Per state license: Installation · Aerobic systems

    (301) 932-8043

  • Earnshaw Bros LLC

    PO Box 146, Waldorf, MD 20602

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

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

    (301) 274-3969 earnshawbrothers1.com

  • Lorenzi, Dodds & Gunnill, Inc

    3475 Leonardtown Rd, Waldorf, MD

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

    Per state license: Installation · Aerobic systems

    (301) 843-6255

  • Lorenzi, Dodds And Gunnill, Inc

    3475 Leonardtown Rd Ste 100, Waldorf, MD 20601

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

    Per state license: Installation · Aerobic systems

    (301) 645-2254 ldgengineers.com

  • Marshall'S Excavating Inc

    Po Box 799, Waldorf, MD

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

    Per state license: Installation · Aerobic systems

    (301) 645-5761

  • Marshell'S Excavating, Inc

    P.O. Box 799, Waldorf, MD

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

    Per state license: Installation · Aerobic systems

    (016) 455-5761

  • Middleton Backhoe Service

    4520 Renner Rd, Waldorf, MD

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

    Per state license: Installation · Aerobic systems

    (301) 643-1340

  • Middleton Backhoe Service

    4520 Renner Rd, Waldorf, MD 20602

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

    Per state license: Installation · Aerobic systems

    (301) 645-4724 middletonbackhoe.com

  • Rainbow Construction

    65 Industrial Park Dr, Waldorf, MD 20601

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

    Per state license: Installation · Aerobic systems

    (301) 843-1018 rainbowconstructs.com

La Plata 8

  • Bowling Brothers Excavation

    10173 Penns Hill Rd, La Plata, MD

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

    Per state license: Installation · Aerobic systems

    (301) 934-3030

  • Cooper Construction

    7750 Hawthorne, La Plata, MD 20695

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

    Per state license: Installation · Aerobic systems

    (301) 683-7766

  • Daivs Pumping

    11545 Deer La, La Plata, MD

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

    Per state license: Installation · Aerobic systems

    (016) 609-9889

  • Della & Sons

    7215 Glen Albin, La Plata, MD

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

    Per state license: Installation · Aerobic systems

    (240) 299-0195

  • Jimmy Richards & Sons

    12200 Billingsley Rd Ste 100, La Plata, MD

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

    Per state license: Installation · Aerobic systems

    (301) 645-5212

  • Johns Concrete & Home Improvement

    8420 Mausen Ln, La Plata, MD

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

    Per state license: Installation · Aerobic systems

    (301) 399-2349

  • Polished Concrete Professionals | Concrete & Terrazzo Polishing Floors

    10181 La Plata Rd, La Plata, MD 20646

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

    Per state license: Installation · Aerobic systems

    (301) 399-3660 polishedconcretesolution.com

  • R K Boswell

    5160 Miller Hill Rd, La Plata, MD

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

    Per state license: Installation · Aerobic systems

    (240) 229-2863

Charlotte Hall 5

  • Arrow Development Services, LLC

    12390 Flying Arrow Plac, Charlotte Hall, MD

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

    Per state license: Installation · Aerobic systems

    (301) 643-3837

  • G & G Septic

    Po Box 465, Charlotte Hall, MD

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

    Per state license: Installation · Aerobic systems

    (301) 904-7620

  • Howard Burch

    8011 Keech Rd, Charlotte Hall, MD

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

    Per state license: Installation · Aerobic systems

    (301) 274-4692

  • Plumbing Services Unlimited Inc

    30537 Potomac Way Unit 203, Charlotte Hall, MD

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

    Per state license: Installation · Aerobic systems

    (301) 472-4000

  • Walter Development

    30480 Vinessa Ct, Charlotte Hall, MD

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

    Per state license: Installation · Aerobic systems

    (301) 884-4608

Nanjemoy 5

  • H & S Construction

    3830 Helwig Farm Rd, Nanjemoy, MD

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

    Per state license: Installation · Aerobic systems

    (301) 751-1791

  • Hs Construction

    4125 Port Tobacco Rd, Nanjemoy, MD

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

    Per state license: Installation · Aerobic systems

    (301) 751-1979

  • Rms Services LLC T/A Scotty'S Excavating

    8870 Jacksontown Rd, Nanjemoy, MD 20662

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

    Per state license: Installation · Aerobic systems

    (301) 751-3178

  • Washington Boyz Contruction LLC

    2235 Port Tobacco Road, Nanjemoy, MD

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

    Per state license: Installation · Aerobic systems

    (240) 209-7571

  • GL Shannon Equipment service

    12690 A Wellington Beach, Nanjemoy, MD

    • 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

Hughesville 4

  • American Dreams Inc

    8125 Old Leonardtown Rd, Hughesville, MD 20637

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

    Per state license: Installation · Aerobic systems

    (301) 274-0020

  • Herbert Excavating LLC

    6000 Webbs Pl, Hughesville, MD

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

    Per state license: Installation · Aerobic systems

    (301) 399-0466

  • Lagana Land Consulting, LLC

    16715 Persica La, Hughesville, MD

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

    Per state license: Installation · Aerobic systems

    (301) 717-8833

  • Girl Scouts National Capital Area

    5285 Winona Place, Hughesville, MD

    • 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

Bryantown 3

  • Superior Tank

    Po Box 10, Bryantown, MD 20602

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

    Per state license: Installation · Aerobic systems

    (240) 304-1244 superiortankco.com

  • Superior Tank Inc

    Po Box 10, Bryantown, MD

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

    Per state license: Installation · Aerobic systems

    (301) 884-3222

  • Superior Tank, Inc

    P. O. Box 10, Bryantown, MD

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

    Per state license: Installation · Aerobic systems

    (301) 274-3772

Newburg 3

  • Beuchert Excavating

    12340 Crain Hwy Unit 200, Newburg, MD 20664

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

    Per state license: Installation · Aerobic systems

    (301) 259-2238 beuchertexcavating.com

  • Wilkerson Builders

    Po Box 406, Newburg, MD

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

    Per state license: Installation · Aerobic systems

    (301) 752-1818

  • Wilkerson Construction Inc

    Po Box 128, Newburg, MD 20637

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

    Per state license: Installation · Aerobic systems

    (301) 259-2225 wilkersonhomesinc.com

Port Tobacco 2

  • Jadee Inc

    Po Box 227, Port Tobacco, MD

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

    Per state license: Installation · Aerobic systems

    (301) 934-2999

  • Yates Contracting Inc

    Po Box 355, Port Tobacco, MD

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

    Per state license: Installation · Aerobic systems

    (301) 643-3588

White Plains 2

  • C L Boswell Septic Tank Service

    Po Box 117, White Plains, MD

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

    Per state license: Installation · Aerobic systems

    (301) 645-9596

  • NU Engineering LLC

    10665 Stanhaven Place, Ste 3128, White Plains, MD 20695

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

    Per state license: Installation · Aerobic systems

    (773) 729-9992 nuengineering.net

Bel Alton 1

  • J. C. Drew Homebuilders

    8555 Crain Hwy, Bel Alton, MD

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

    Per state license: Installation · Aerobic systems

    (301) 643-6513

Bryans Road 1

  • Wt Excavating & Septic Service

    Po Box 855, Bryans Road, MD

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

    Per state license: Installation · Aerobic systems

    (301) 283-6714

Faulkner 1

  • Plumer'S Trucking And Back Hoe Service

    P.O. Box 254, Faulkner, MD

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

    Per state license: Installation · Aerobic systems

    (240) 299-6838

Laplata 1

  • Mona Contracting LLC

    9350 Mona Farm Pl, Laplata, MD 20677

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

    Per state license: Installation · Aerobic systems

    (301) 440-1145 hiremona.com

Marbury 1

  • George Bowman

    4876 Pisgah Marbury Rd, Marbury, MD

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

    Per state license: Installation · Aerobic systems

    (301) 743-2126

Pomfret 1

  • Estevez Excavating LLC

    8750 Marshall Corner Rd, Pomfret, MD

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

    Per state license: Installation · Aerobic systems

    (301) 643-7832

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 Charles 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 Charles County: common questions

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

47 septic companies serve Charles County, Maryland, and 47 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 Charles County?

1 of the 47 listings in Charles County 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 Charles County?

47 listings in Charles 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.