GroundRosterLicensed Well and Septic Contractors in Maryland
Maryland lists 2,309 licensed well and septic contractors: 505 well drillers and pump installers and 1,804 septic contractors. They are based in 24 counties and 292 cities. 19 license classes appear, covering roles such as drilling / construction and pump installation.
Checked against MD State Board of On-Site Wastewater Professionals - registered individuals, Maryland State Board of Well Drillers - active licensees and NJDEP DataMiner - Well Drilling Companies. Roster copy last refreshed 2026-08-17.
Browse by county or request free quotes.
Counties with the most listings based there
Browse Maryland by county
Each listing sits under the county of the address on its license record, which can be a mailing address. 24 counties have listings based there.
Cities with the most listings based there
Well Drillers by city in Maryland
Looking for a specific contractor? Search by name, business name, or license number.
Hiring a well and septic professional in Maryland
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.
How do I check a well and septic professional's license in Maryland?
Use the license search to find the listing by name, business name, or license number, then confirm it with the agency that issued the license. Every listing links to the roster it came from.
What does well or septic work cost in Maryland?
Our cost guides give national ranges for well drilling, well pump repair, septic tank pumping, septic cleaning, repairs, and inspections. Site conditions, access, and local demand set the real number, so get at least three written quotes from licensed well and septic pros in Maryland.
Is a permit required?
Usually, for a new system or well and for most repairs, and the rules are set by the state or the county. Our Maryland permit guide covers who issues them and what they cover.
Licensed in Maryland, based in another state
2 well and septic pros hold a Maryland license but the address on the license record is in another state, so they aren't under a Maryland county.
Bruce C. VanderhoefLicensed
Kevin R. CaskeyLicensed
Listings without a county
513 listings have no county we could place: the license record gives none, and its ZIP code or town doesn't settle one. Search by ZIP, or browse by the town on the record:
Permits and Maryland agency resources
Do I need a permit for well or septic work in Maryland? ›
Where this Maryland data comes from
- MD State Board of On-Site Wastewater Professionals - registered individuals · source page
- Maryland State Board of Well Drillers - active licensees · source page
- NJDEP DataMiner - Well Drilling Companies · source page