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Licensed Septic Contractors: Montgomery County, MD

68 licensed septic contractors based in Montgomery County. Every license number below is sourced from public licensing records, with a link to look it up yourself.

Grouped by the county of the address on each license record, which can be a mailing address, so it doesn't tell you where the business works. When the record names no county, we place it by ZIP code, then town.

Checked against MD State Board of On-Site Wastewater Professionals - registered individuals. Roster copy last refreshed 2026-08-17.

Need septic pumping, cleaning, repair, inspection, or installation work quotes in Montgomery County? Request free quotes and we'll pass it to licensed septic contractors who serve the area.

Towns in Montgomery County

All 18 towns named on the license records based here, with the number of listings in each, most first.

Gaithersburg 21 listings Germantown 10 listings Clarksburg 6 listings Silver Spring 6 listings Damascus 5 listings Burtonsville 4 listings Chevy Chase 2 listings Laytonsville 2 listings Olney 2 listings Poolesville 2 listings Barnesville 1 listing Boyds 1 listing Brookeville 1 listing Brooksville 1 listing Dickerson 1 listing Montgomery Village 1 listing North Potomac 1 listing Potomac 1 listing

License classes on the Montgomery County records

Each class as the issuing agency prints it on the license record. A record that names more than one class counts once under each, so the rows can add up to more than 68.

License class	Trade	Listings
Registered On-Site Wastewater (Septic) Professional	Septic	68

Septic Contractors based in Montgomery County (68)

Bradley R. Baker, Licensed

Septic

Monocacy Custome services Inc · Based in Barnesville, MD · License #00812

Christopher Moore, Licensed

Septic

Based in Gaithersburg, MD · License #02279

John M. DeReggi, Licensed

Septic

John DeReggi · Based in Boyds, MD · License #02431

Douglas G. Tilley, Licensed

Septic

O'connell & Lawrence Inc · Based in Olney, MD · License #00855

David K. Mitchell, Licensed

Septic

Charles P. Johnson & Associates, Inc. · Based in Silver Spring, MD · License #02448

Ricardo A. Rubio, Licensed

Septic

Based in Gaithersburg, MD · License #02276

Sergio A. Garcia Portillo, Licensed

Septic

Garcia's Mechanical llc · Based in Gaithersburg, MD · License #02443

Christie J. Maisel, Licensed

Septic

Potomac Valley Surveys · Based in Poolesville, MD · License #00760

Victoria M. Holtzman, Licensed

Septic

Rodgers Consulting · Based in Germantown, MD · License #02327

Emerson L. Rezende, Licensed

Septic

Smart Home Inspects · Based in Gaithersburg, MD · License #00008

Jagdish Mandavia, Licensed

Septic

Pr LLC · Based in Clarksburg, MD · License #02491

Johan S. Clavijo, Licensed

Septic

Based in Gaithersburg, MD · License #02277

Victor E. Calderon, Licensed

Septic

John Seek Septic Tank Pumping LLC · Based in Laytonsville, MD · License #01547

Wade Droneburg, Licensed

Septic

Busy Service, Inc · Based in Gaithersburg, MD · License #00655

Marvin T. Gaither, Licensed

Septic

M.T. Gaither · Based in Brookeville, MD · License #02124

Jorge F. Medrano, Licensed

Septic

DMV Grease Trap, LLC · Based in Germantown, MD · License #02179

Terry E. Conrad, Jr., Licensed

Septic

Oak Hill Construction, LLC · Based in Silver Spring, MD · License #00513

Herbert F. Rivera, Licensed

Septic

Based in Gaithersburg, MD · License #02278

Chinmay Vyas, Licensed

Septic

CV, Inc. · Based in Gaithersburg, MD · License #02307

William R. Beall, II, Licensed

Septic

J. Maurice Carlisle Inc · Based in Dickerson, MD · License #00508

John M. Findlay, Licensed

Septic

John Seek Septic Tank Pumping LLC · Based in Laytonsville, MD · License #00985

Amanda S. Stamper, Licensed

Septic

Rodgers Consulting · Based in Germantown, MD · License #02232

Jason Proffitt, Licensed

Septic

Clarksburg Plumbing, LLC · Based in Clarksburg, MD · License #01416

David H. Cha, Licensed

Septic

Gutschick, Little & Weber, P.A. · Based in Burtonsville, MD · License #01310

Daniel D. Sweeny, Licensed

Septic

Gutshick Little & Weber, P.A. · Based in Burtonsville, MD · License #01965

Wallace Sullivan, Jr., Licensed

Septic

Based in Gaithersburg, MD · License #02271

Jeffrey B. Amateau, Licensed

Septic

VIKA Maryland LLC · Based in Germantown, MD · License #02162

Turek Coleman, Licensed

Septic

Busy Service Inc · Based in Gaithersburg, MD · License #02513

Benjamin R. Falls, Licensed

Septic

Based in Gaithersburg, MD · License #02543

Paul Evans, Licensed

Septic

Busy Service, Inc · Based in Gaithersburg, MD · License #02112

Gary L. King, Licensed

Septic

King & Son Septic Service · Based in Gaithersburg, MD · License #01634

Nicholas P. Wachter, Licensed

Septic

Busy Service, Inc · Based in Gaithersburg, MD · License #01986

Stephen E. Crum, Licensed

Septic

Macris, Hendricks & Glascock, P.A · Based in Montgomery Village, MD · License #00648

Rodney W. Holston, Sr., Licensed

Septic

R&P Backhoe Service Inc. · Based in Clarksburg, MD · License #01616

Clifton B. Bennett, Licensed

Septic

Bennett Excavation · Based in Damascus, MD · License #00372

Ghassan S. Khouri, Licensed

Septic

VIKA Maryland llc · Based in Germantown, MD · License #02170

Martin Saia, Licensed

Septic

Saia Plumbing & Heating Co. · Based in Olney, MD · License #01474

David W. McKee, Licensed

Septic

Benning & Associates, Inc · Based in Gaithersburg, MD · License #00763

Hugo M. Sosa, Licensed

Septic

DMV Grease Trap, LLC · Based in Germantown, MD · License #02181

Edward M. Lupcho, Licensed

Septic

Lupcho Construction · Based in Damascus, MD · License #02227

Kevin Foster, Licensed

Septic

Gutschick, Little & Weber, P.A. · Based in Burtonsville, MD · License #01980

Sassan Aflaki, Licensed

Septic

Perceptive Engineering LLC · Based in Potomac, MD · License #02309

Michael J. Bowersox, Licensed

Septic

Ben Lewis Plumbing · Based in Clarksburg, MD · License #01438

Haitham A. Hijazi, Licensed

Septic

Charles P. Johnson & Associates, Inc. · Based in Silver Spring, MD · License #02450

Dontae L. Nicholson, Licensed

Septic

Based in Gaithersburg, MD · License #02280

James Reise, Licensed

Septic

Reise Enterprises Inc · Based in Damascus, MD · License #01516

Terry E. Conrad, Licensed

Septic

Oak Hill Construction, LLC · Based in Silver Spring, MD · License #00512

Tim Longfellow, Licensed

Septic

Gutschick, Little & Weber, P.A. · Based in Burtonsville, MD · License #01977

Bryan Giles, Licensed

Septic

Simple Septic · Based in Chevy Chase, MD · License #01939

Jorge F. Orellana, Licensed

Septic

DMV Grease Trap, LLC · Based in Germantown, MD · License #02180

Troy A. Price, Licensed

Septic

Based in Gaithersburg, MD · License #02270

Michael B. Goodman, Licensed

Septic

VIKA Maryland LLC · Based in Germantown, MD · License #02161

Roy E. Stanley, Licensed

Septic

CT Stanley & Son Inc · Based in Damascus, MD · License #00361

Tom K. Gormley, Licensed

Septic

Utility Locating Service, Inc. · Based in Brooksville, MD · License #01600

Joshua O. Maisel, Licensed

Septic

Benning & Associates, Inc · Based in Gaithersburg, MD · License #00761

Joseph M. Washington, Licensed

Septic

Based in Silver Spring, MD · License #01486

Pamela L. Holston, Licensed

Septic

R&P Backhoe Service Inc. · Based in Clarksburg, MD · License #00071

Addisu Woldesenbet, Licensed

Septic

Based in Silver Spring, MD · License #02411

Travis B. Whetzel, Licensed

Septic

King & Sons Septic Service LLC · Based in Gaithersburg, MD · License #01883

Rodney W. Holston, Jr., Licensed

Septic

R&P Backhoe Service Inc. · Based in Clarksburg, MD · License #00072

Jason Azar, Licensed

Septic

Clark / Azar & Associates, Inc · Based in Germantown, MD · License #02365

Ankur Patel, Licensed

Septic

Client first consultants, LLC · Based in Germantown, MD · License #02326

Ryan T. Schulte, Licensed

Septic

USA Potty, LLC · Based in Chevy Chase, MD · License #02109

Vernon D. King, III, Licensed

Septic

Environmental Septic & Waste · Based in Damascus, MD · License #01051

David R. Bassett, Licensed

Septic

Potomac Mechanical Contractors Inc. · Based in Gaithersburg, MD · License #01966

David P. Mowatt, Licensed

Septic

Potomac Valley Surveys · Based in Poolesville, MD · License #00769

Andres Medina, Licensed

Septic

Based in Gaithersburg, MD · License #01822

Jack T. Leigh, Licensed

Septic

Leigh & Sons · Based in North Potomac, MD · License #00532

Own one of these businesses? Find your listing and claim it.

Looking for a specific contractor? Search by name, business name, or license number.

Services in Montgomery County, with national cost ranges

Listings based in Montgomery County whose license class covers each service. Cost ranges are national; each links its cost guide.

Service	Based in Montgomery County	National cost
Septic Tank Pumping	0	$250 to $600
Septic System Installation	0	$3,600 to $12,500
Septic Inspection	0	$150 to $900
Septic System Design	0	Varies by site
Perc Test and Soil Evaluation	0	$250 to $1,000

None of the listings based in Montgomery County hold a license class we can match to septic tank pumping, septic system installation, septic inspection, septic system design or perc test and soil evaluation. Ask any contractor whether they do this work, or try a nearby city.

Hiring a septic contractor in Montgomery County

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 on this page is still active with the agency that issued it, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.

Do I need a permit for well or septic work in Maryland?

Neighboring counties

Arlington County, VA 1 listing Fairfax County, VA 16 listings Frederick County 88 listings Howard County 47 listings Loudoun County, VA 47 listings Prince George's County 80 listings