Licensed Septic Companies in Carroll County, MD
72 septic companies serve Carroll County, Maryland, and 71 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 Carroll County
Guides: Septic tank pumping · Septic system installation · Septic inspection · Septic repair · Drain field repair · Aerobic septic systems · Installation cost · Pumping cost
72 septic companies in Carroll County
Westminster 29
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Arkcan, llc
2506 Karen Way, Westminster, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Bpr Inc
150 Airport Drive Suite 4, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Bpr, Inc
150 Airport Dr Suite 4, Westminster, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Carroll CHD
290 S. Center St, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Carroll CHD
290 S. Center St, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Carroll CHD
290 S. Center St, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Clsi
439 East Main St, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Clsi
439 East Main St, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Dorsey Construction Services
7 W George St, Westminster, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Installation Per state license: Aerobic systems
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Drs And Associates
52 Winters Street, Westminster, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Falkenstines Inc
230 Bankard Rd, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Francis Bollinger &Sons
1343 Bollinger Rd, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Groves Brothers Builders LLC
Po Box 104, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Hanover Land Services Inc
2001 Meadow Dr, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Hydro Terra Group
15 National Place / 198 Pennsylvania Ave, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Hydro-Terra Group
1106 Business Parkway South, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Jade Enterprises
3335 Marston Rd, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Jet Septic and Plumbing Services
440 Bear Branch Rd, Westminster, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Pumping · Installation · Inspection · Repair · Grease traps Per state license: Aerobic systems
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LCM Services
440 Bear Branch Rd, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Legacy Contracting, Inc
1538 Manchester Rd, Westminster, MD 21158
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Leppo Excavating, LLC
2808 Birdview Rd, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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National Construction Company
198 Penn Ave, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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RTF Associates, Inc.
142 E Main St, Westminster, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Perc testing Per state license: Installation · Aerobic systems
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South Carroll Backhoe
4410 Salem Bottom Rd, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Sweeney Builders Inc
1225 Cool Mint Ct, Westminster, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Thomas C Senseney & Sons LLC
414 Maple Ave, Westminster, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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WTC Contractors Inc.
3033 Salem Bottom Rd, Westminster, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Installation Per state license: Aerobic systems
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Young Septic Services
1802 Baltimore Blvd, Westminster, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Pumping · Installation · Inspection · Repair · Drain field · Perc testing Per state license: Aerobic systems
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Young Septic Services (MD)
1802 Baltimore Blvd, Westminster, MD 21157
From their website: Pumping · Installation · Inspection · Repair · Drain field · Perc testing
Sykesville 13
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Charles A Klein & Sons
5220 Klee Mill Rd, Sykesville, MD 21784
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Charlies Bobcat Service Inc
13 Energetic Endevor Drive, Sykesville, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Do it Plumbing & Heating LLC
104 Estelle Ct, Sykesville, MD 21784
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Fogle's Septic
580 Obrecht Rd Ste B, Sykesville, MD 21784
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Pumping · Installation · Inspection · Repair · Perc testing · Grease traps Per state license: Aerobic systems
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Freedom Septic Service
2809 Liberty Rd, Sykesville, MD 21784
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Pumping · Installation · Inspection · Repair · Drain field · Risers & lids · Grease traps Per state license: Aerobic systems
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J.V. Harrison Backhoe And Septic
4717 Old Washington Rd, Sykesville, MD 21784
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Lde Inc.
7520 Main Street #203, Sykesville, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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M. G. Fulton Services
133 Whaite Way, Sykesville, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Mrm Site Solutions LLC
7531 Norris Avenue, Sykesville, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Patton Homes Inc
10 Venture Way-A, Sykesville, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Freedom Septic
2809 Liberty Rd, Sykesville, 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
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Michael Wright
247 W Old Liberty Rd, Sykesville, 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
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Patton Homes
10 Venture Way, Sykesville, 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
New Windsor 7
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Babylon Vault Company
925 Wakefield Valley Rd, New Windsor, MD 21776
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Chief Septic Inc
2502 Gillis Rd, New Windsor, MD 21776
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Pumping · Repair · Perc testing · Grease traps Per state license: Installation · Aerobic systems
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Condon'S Excavating
1600 Wakefield Valley Rd, New Windsor, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Ox Construction
3780 Roop Road, New Windsor, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Pickles Services
10701A Mickinstry Mill Rd, New Windsor, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Sams Creek
2810 Sams Creek Rd, New Windsor, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Young Excavating, LLC
Po Box 220, New Windsor, MD 21776
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Installation · Inspection · Repair · Drain field Per state license: Aerobic systems
Hampstead 6
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Allied Plumbing And Heating, Inc
4622 Lower Beckleysvile Rd, Hampstead, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Charles D Nash And Assoc LLC
613 Hanover Pike, Hampstead, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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L.R. Hollman Inc
4001 Utz Rd, Hampstead, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Robin Ford Building & Remodeling
2900 Shiloh Rd, Hampstead, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Wc Rhoten Excavating
4990 Wertz Rd, Hampstead, MD 21074
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Wc Rhoten Excavating, Inc
4990 Wertz Rd, Hampstead, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Manchester 5
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Buffalo Construction Company Inc.
4175 Hanover Pike, Manchester, MD 21102
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Down To Earth Exc. Inc
4500 Wentz Rd, Manchester, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Legacy Septic & Excavation
2914 Hanover Pike, Manchester, MD 21102
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Pumping · Installation · Inspection · Drain field · Risers & lids · Perc testing Per state license: Aerobic systems
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New Dimensions Plumbing & Excavatin
3018 Bachman Rd, Manchester, MD 21102
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Legacy Septic & Excavation llc
2914 Hanover Pike, Manchester, 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
Union Bridge 4
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BAT Onsite, LLC
9608B Fountain School Rd, Union Bridge, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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D.B. Rockwood Plumbing Inc
3881 Watson Lane, Union Bridge, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Fe Harrison & Son
9617 Fountain School Rd, Union Bridge, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Wiyell & Company
249 Bacher John Road, Union Bridge, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Finksburg 3
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Custom Designs And Contracting
3082 Patapsco Road, Finksburg, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Donald S Watts Co., Inc
3150 Baltimore Blvd, Finksburg, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Michael Septic
Po Box 113, Finksburg, MD 21048
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Pumping · Repair Per state license: Installation · Aerobic systems
Taneytown 2
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J.M. Renehan
68 Frederick Street, Taneytown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
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Tricon Construction
2655 Baumgardner Rd, Taneytown, MD 21787
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Installation Per state license: Aerobic systems
Fallston 1
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Jem Plumbing & Heating Inc
2805 Charles Street, Fallston, MD 21157
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Keymar 1
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Westminster Septic Service
11723 Legore Bridge Rd, Keymar, MD 21791
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Millers 1
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Tomco Plumbing
5 Teresa Marie Ct, Millers, MD 21102
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
No listings match those filters.
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 Carroll 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 Carroll County: common questions
How many licensed septic companies are in Carroll County, MD?
72 septic companies serve Carroll County, Maryland, and 71 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 Carroll County?
8 of the 72 listings in Carroll 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 Carroll County?
72 listings in Carroll 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.