Safe, Timely & Quality Drilling in the Mid-Atlantic Since 1991

Our Services

Geotechnical and Environmental

Precisely collecting data without distorting results using our extensive knowledge of local geology.

Water Wells, Pump Services, Geothermal

Water well drilling & pump services, Geothermal well drilling & loop installation with ground-loop connection.

Temporary Traffic Control

Full service traffic management for your roadway projects in Maryland and Virginia.

Why Choose Connelly?


We’ve been industry leaders in the drilling business since 1991.


Our drillers have a combined total experience of 100+ years.

Service Area

We extend our services beyond Maryland and Virginia to include West Virginia, Pennsylvania, Delaware and Washington, D.C.