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

Our Services

Sonic, Geotechnical and Environmental

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

Water Well & Geothermal

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

Plumbing, Water Well & Pump Services

Full-service residential plumbing and well pump repair

Why Choose Connelly?


Industry leaders since 1991


Combined total experience of 100+ years

Service Area

Service area extends beyond Maryland and Virginia to include West Virginia, Pennsylvania, Delaware and Washington, D.C.