Home › Maryland › Harford County › Joppa › Mark J. Gruntowicz

Mark J. GruntowiczLicensed

Licensed septic contractor based in Joppa, Harford County, MD

License details

License number	01324
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	Joppa, Harford County, Maryland 21085

"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 #01324 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 Joppa

All listings based in Joppa 7

Other septic contractors based in Joppa

Patrick W. FunkLicensed

Septic

Based in Joppa, MD · License #01323

Richard B. CarpenterLicensed

Septic

R. Carpenter Construction Inc · Based in Joppa, MD · License #00199

Johnnie B. SextonLicensed

Septic

Based in Joppa, MD · License #01494

Thomas WhiteLicensed

Septic

Based in Joppa, MD · License #01326

Robert M. Lang JrLicensed

Septic

Based in Joppa, MD · License #00335

David BrownLicensed

Septic

Based in Joppa, MD · License #01322

Other licensed septic contractors based in Harford County

John R. Call, SrLicensed

Septic

John's Septic Service LLC · Based in Aberdeen, MD · License #01548

Cole B. HersheyLicensed

Septic

Shoreline Excavating, Inc. · Based in Bel Air, MD · License #00609

Nathan R. WimerLicensed

Septic

Taylor Precision Excavating LLC · Based in Street, MD · License #00283

Jason T. EdwardsLicensed

Septic

C & L Excavating, Inc. · Based in Forest Hill, MD · License #00105

Patsy A. AtkinsLicensed

Septic

Clearview Mobile Home Park, LLC · Based in Darlington, MD · License #00289

See every listing based in Harford County or in Joppa.