Home › Maryland › St. Mary's County › Leonardtown › Mark A. Williams

Mark A. WilliamsLicensed

Licensed septic contractor based in Leonardtown, St. Mary's County, MD

License details

License number	00710
License type	Registered On-Site Wastewater (Septic) Professional
License status	Current, MD State Board of On-Site Wastewater Professionals
License expires	December 31, 2026
Based in	Leonardtown, St. Mary's County, Maryland 20650

"Based in" is the city and county of the address on the business's license record.

How to verify this license

We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #00710 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: MD State Board of On-Site Wastewater Professionals - registered individuals, last checked 2026-08-17. Look it up at the issuing agency.

Compare licensed contractors based in Leonardtown

All listings based in Leonardtown 13

Other septic contractors based in Leonardtown

Justin D. BrowneLicensed

Septic

J. Browne Excavating LLC · Based in Leonardtown, MD · License #01788

Wayne P. HuntLicensed

Septic

Little Silences Rest Inc · Based in Leonardtown, MD · License #01619

Barrett (Barry) C. VukmerLicensed

Septic

Chesapeake Trails Surveying, LLC · Based in Leonardtown, MD · License #01733

Mary Katherine KulpLicensed

Septic

Fejes construction LLC · Based in Leonardtown, MD · License #01876

James L. GoddardLicensed

Septic

James Goddard Excavating, LLC · Based in Leonardtown, MD · License #01024

William L. MehaffeyLicensed

Septic

Little Silences Rest Inc · Based in Leonardtown, MD · License #00969

Other licensed septic contractors based in St. Mary's County

John B. Hurry, Sr.Licensed

Septic

John B. Hurry · Based in Clements, MD · License #00611

Lewis G. YatesLicensed

Septic

T&T Sweeping Port-O-Let Service Inc. · Based in Clements, MD · License #02561

Joseph M. TennysonLicensed

Septic

Tennyson Enterprises, LLC · Based in Mechanicsville, MD · License #01852

Gerald W. BucklerLicensed

Septic

Buckler Contracting, LLC · Based in Mechanicsville, MD · License #01975

Brian E. WindsorLicensed

Septic

B & W Plumbing · Based in Park Hall, MD · License #02383

See every listing based in St. Mary's County or in Leonardtown.