96 licensed septic contractors based in Washington County. Every license number below is sourced from official Maryland records, with a link to verify it yourself.
Grouped by the county of the address on each business's state license record, which can be a mailing address; it doesn't tell you where the business works. Where the record doesn't name the county of the address, its ZIP code decides (a ZIP that crosses a county line goes to the county holding most of its homes), then its town.
James Reed Excavating · Based in Big Pool, MD · License #00593
Tolley Enterprises, Inc. · Based in Boonsboro, MD · License #00496
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02194
Based in Hagerstown, MD · License #01242
C.R. Semler, Inc · Based in Smithsburg, MD · License #01077
J.A. Horst & Sons · Based in Clear Spring, MD · License #00991
Grand Lawn Services, LLC. · Based in Sharpsburg, MD · License #02544
RW Excavating · Based in Hancock, MD · License #01089
C.R. Semler, Inc · Based in Smithsburg, MD · License #01081
C.R. Semler, Inc · Based in Smithsburg, MD · License #01707
AC&T Co., Inc. · Based in Hagerstown, MD · License #00936
Hoffman Excavating & Hauling LLC · Based in Hagerstown, MD · License #00748
C.R. Semler, Inc · Based in Smithsburg, MD · License #01066
Glen's Septic Service · Based in Hancock, MD · License #01000
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02359
AC&T Co., Inc. · Based in Hagerstown, MD · License #00846
Antietam Excavating · Based in Sharpsburg, MD · License #01718
Based in Smithsburg, MD · License #00430
Josh Crampton Excavating · Based in Keedysville, MD · License #01265
Richard Contractor LLC · Based in Hagerstown, MD · License #01953
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02357
Based in Keedysville, MD · License #01334
Sam's Excavating LLC · Based in Smithsburg, MD · License #00041
Tri-County Pump Service Inc · Based in Boonsboro, MD · License #00804
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02198
Triad Engineering, Inc. · Based in Hagerstown, MD · License #00930
C.R. Semler, Inc · Based in Smithsburg, MD · License #01671
Fox Mountain Property Inspections · Based in Boonsboro, MD · License #01983
Triad Engineering Inc · Based in Hagerstown, MD · License #00852
Pile Septic Service LLC · Based in Hagerstown, MD · License #01387
Tri-County Pump Service, Inc. · Based in Boonsboro, MD · License #00577
Tri-County Pump Service Inc · Based in Boonsboro, MD · License #00850
Hartland Earthworks, LLC · Based in Hagerstown, MD · License #01836
Unger Surveying & Engineering Corp · Based in Hagerstown, MD · License #02584
Based in Hagerstown, MD · License #01858
Tri-County Pump Service Inc · Based in Boonsboro, MD · License #00559
Tri-County Pump Service Inc · Based in Boonsboro, MD · License #00834
J.R. Services, LLC · Based in Smithsburg, MD · License #00055
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02191
C.R. Semler, Inc · Based in Smithsburg, MD · License #01085
Swords Inc dba Roto Rooter · Based in Hagerstown, MD · License #02316
J.R. Services, LLC · Based in Smithsburg, MD · License #02121
C.R. Semler, Inc · Based in Smithsburg, MD · License #01080
C+S Contractors, LLC · Based in Sharpsburg, MD · License #01454
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02192
J.A. Horst & Sons · Based in Clear Spring, MD · License #02269
Ltp, Lsi. LLC · Based in Hagerstown, MD · License #01804
C+S Contractors, LLC · Based in Sharpsburg, MD · License #01453
Keplingers Excavating Inc · Based in Boonsboro, MD · License #02315
Karl Pile Septic Service · Based in Hagerstown, MD · License #00063
Emanuelson Plumbing & Heating · Based in Keedysville, MD · License #02364
Tri-County Pump Service Inc · Based in Boonsboro, MD · License #00768
MW Willard Plumbing & Heating Inc. · Based in Sharpsburg, MD · License #02453
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02216
Greg's Excavating & Utilities, Inc. · Based in Big Pool, MD · License #01002
Fox Mountain Property Inspections · Based in Boonsboro, MD · License #01982
C.R. Semler, Inc · Based in Smithsburg, MD · License #01067
J.R. Services LLC · Based in Smithsburg, MD · License #01001
AC&T Co., Inc. · Based in Hagerstown, MD · License #01703
Tana Plumbing & Heating LLC · Based in Williamsport, MD · License #00069
C.R. Semler, Inc · Based in Smithsburg, MD · License #01073
C.R. Semler, Inc · Based in Smithsburg, MD · License #01065
Abbott Septic Tank Service · MD · License #00503
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02195
Hartland Earthworks, LLC · Based in Hagerstown, MD · License #01318
Stotelmyer Plumbing · Based in Smithsburg, MD · License #00950
C.R. Semler, Inc · Based in Smithsburg, MD · License #01086
Gerald Taylor Co., Inc. · Based in Williamsport, MD · License #02048
J.R. Services LLC · Based in Smithsburg, MD · License #01009
John Kriner Plumbing & Heating · Based in Williamsport, MD · License #02283
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02193
Pile Septic Service LLC · Based in Hagerstown, MD · License #01799
Thomas & Son Farms · Based in Boonsboro, MD · License #00704
Gerald Taylor Co., Inc. · Based in Williamsport, MD · License #02554
Pile Septic Service LLC · Based in Hagerstown, MD · License #00837
Olden Excavating Inc · Based in Keedysville, MD · License #00972
Truck N Van & Car Accessories · Based in Hagerstown, MD · License #01424
Affordable Septic & Excavating LLC · Based in Hagerstown, MD · License #00992
Grove's Groundwurx LLC · Based in Hagerstown, MD · License #01899
Stoy's Flooring & Construction · Based in Boonsboro, MD · License #01719
J.A. Horst & Sons · Based in Clear Spring, MD · License #00990
Tri-County Pump Service Inc · Based in Boonsboro, MD · License #00805
Double H Landworks Inc. · Based in Big Pool, MD · License #01945
Stoy's Flooring & Construction · Based in Boonsboro, MD · License #01720
Tri-County Pump Service Inc · Based in Boonsboro, MD · License #00857
Gerald Taylor Co., Inc. · Based in Williamsport, MD · License #02553
Mayes Septic & Port A Pots LLC · Based in Hagerstown, MD · License #02196
Brian J. Semler Excavating · Based in Smithsburg, MD · License #00955
C.R. Semler, Inc · Based in Smithsburg, MD · License #01074
Cedar Valley Septic Services · Based in Williamsport, MD · License #02231
Bidle Brothers, Inc. · Based in Keedysville, MD · License #00454
J.R. Services, LLC · Based in Smithsburg, MD · License #02120
Ac & T · Based in Hagerstown, MD · License #01564
D.W. Olden LLC · Based in Sharpsburg, MD · License #01055
D.L. Weller Excavating · Based in Hancock, MD · License #00630
J.R. Services, LLC · Based in Smithsburg, MD · License #02122
Septic (onsite wastewater) contractors handle everything from routine septic tank pumping and cleaning to repairs, inspections, and new system installation. States license each role separately (a pumper is not necessarily licensed to install, and vice versa), so match the license class to the job.
Before you sign anything: confirm the license number on this page is still active with Maryland, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.
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