Precisely collecting data without distorting results using our extensive knowledge of local geology.
Water well & Geothermal well drilling & loop installation with ground-loop connection.
Full-service residential plumbing and well pump repair
Industry leaders since 1991
Combined total experience of 100+ years
Service area extends beyond Maryland and Virginia to include West Virginia, Pennsylvania, Delaware and Washington, D.C.
Safe, Timely & Quality Drilling
Connelly & Associates
1513 Tilco Drive
Frederick, MD 21704