Licensed Septic Companies in Calvert County, MD
59 septic companies serve Calvert County, Maryland, and 58 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 Calvert County
Guides: Septic tank pumping · Septic system installation · Septic inspection · Septic repair · Drain field repair · Aerobic septic systems · Installation cost · Pumping cost
59 septic companies in Calvert County
Huntingtown 17
-
Derco Enterprise Inc
1010 Ponds Wood Rd, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
DMH Plumbing&Excavating LLC.
150 Liewelyn ln, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Elite Excavating & Septic
1665 Solomons Island Rd, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
J. D. R. Septic Services
4386 Huntingtown Rd, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
J&J Environmental Services
Po Box 362, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
M & J Backhoe Service
1955 Emmanuel Church Rd, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
M&M Excavating Inc.
1530 Primrose Ln, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Marks Lawn Service, Inc
50 Mulberry Lane, Huntingtown, MD 20639
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Morgan E Russell Inc
100 Prospect La, Huntingtown, MD 20639
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Morgan E. Russell Inc.
100 Prospect Dr, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
N & J Excavating
P. O. Box 536, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Paul C Hayden & Sons Plumbing & Heating
111 Llewelyn Lane, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Precision Contracting
1791 Stinnett Rd, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Pride Works
3190 Freeland Ave, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Rexco
2285 Plum Point Road, Huntingtown, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Sassafras Farm LLC
4991 Huntingtown Rd, Huntingtown, MD 20754
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Lee's Septic Tank Services
Huntingtown, MD 20639, Huntingtown, MD 20639
From their website: Pumping · Repair · Risers & lids · Grease traps
Owings 12
-
A G Cooper Construction
P.O. Box 1164, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
D&T Construction
Po Box 459, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Frank Cleary Custom Builder
P.O. Box 639, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Hg Berry Excavation
2442 5Th St, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Hopkins & Wayson, Inc
601 Keith Lane, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
J. R. Pereira Construction, Inc
2150 Clearview Dr, Owings, MD 20736
- 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
-
Lorence Plumbing & Heating Inc
2510 Kerry Ann La, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Outback Porta Jon Inc
7615 Investment Ct #102, Owings, MD 20736
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Pumping · Inspection · Drain field · Grease traps Per state license: Installation · Aerobic systems
-
Scaggs Homes
7011 Briscoe Turn Rd, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Southern Shores Septic, LLC
774 Swan Ln, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Springfield Mechanical
P. O. Box 218, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Sr Smith Contractors Inc
7933 Mt Harmony La, Owings, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Lusby 8
-
Abm Construction Co Inc
845 Conoy Rd, Lusby, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Bbt Enterprises
11680 Mill Bridge Road, Lusby, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Calvert Construction Co LLC
12985 Sailboat Lane, Lusby, MD 20689
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
D & D Homes, Inc
P. O. Box 516, Lusby, MD 20688
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
KBD Excavating
8380 Nursery Rd, Lusby, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Matthew S Keen Contracting
9250 Pardoe Rd, Lusby, MD 20657
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Rite Tight
12245 Ronsby Hall Rd, Lusby, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Southern Maryland Excavating
967 Laredo Trail, Lusby, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Prince Frederick 6
-
G. H. Hastings Excavation
5896 Sandy Point Rd, Prince Frederick, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Hammetts Building Services
4480 Sixes Rd, Prince Frederick, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Marrick Properties
995 N Prince Frederick Blvd, Prince Frederick, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Quality Septic Backhoe Service
524 Clay Hammond Rd, Prince Frederick, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Spek
2800 Hallowing Point Rd, Prince Frederick, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Spek Home Inspections, LLC
2880 Hallowing Point Rd, Prince Frederick, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Dunkirk 3
-
Cotton'S Septic LLC
P. O. Box 1041, Dunkirk, MD 20736
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Peruzzi Bros Inc
12136 Palisades Dr, Dunkirk, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Willis V Fowler Excavating
450 Jewell Rd., Dunkirk, MD 20754
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Sunderland 3
-
Jimmy'S Septic LLC
5922 Sunderleigh Dr, Sunderland, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Jw Drawer
Po Box 207, Sunderland, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
Magnolia Group
135 Clyde Jones Rd, Sunderland, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Saint Leonard 2
-
4Jet Construction LLC
5918 Hillside Rd, Saint Leonard, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
-
4Jet Construction, Inc
5918 Hillside Rd, Saint Leonard, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Baltimore 1
-
Marrick Construction Company
2043 Sue Ave, Baltimore, MD 20678
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Chesapeake Beach 1
-
Gradient Construction LLC
P. O. Box 370, Chesapeake Beach, MD 20732
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Huntington 1
-
Paul C Hayden & Sons Plumbing & Heating
111 Llewelyn Lane, Huntington, MD 20639
- 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
Port Republic 1
-
Clean Cut Landscaping & Excavating
5845 Broomes Island Rd, Port Republic, MD
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
Solomons 1
-
Concepts In Building Inc
P.O. Box 129, Solomons, MD 20657
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
St Leonard 1
-
J. Calvin Wood Jr., INC.
Po Box 96, St Leonard, MD 20685
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
From their website: Repair · Drain field · Perc testing Per state license: Installation · Aerobic systems
St. Leonard 1
-
McKenzie-Contracting, LLC
P.O. Box 64, St. Leonard, MD 20736
- Licensed: Maryland MDE Certified BAT (Best Available Technology) Septic Installer (Maryland Department of the Environment, verify)
Per state license: Installation · Aerobic systems
West River 1
-
Calvert Chaney Construction Co
P. O. Box 314, West River, MD 20678
- 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 Calvert 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 Calvert County: common questions
How many licensed septic companies are in Calvert County, MD?
59 septic companies serve Calvert County, Maryland, and 58 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 Calvert County?
2 of the 59 listings in Calvert 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 Calvert County?
58 listings in Calvert 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.