Shannahan Artesian Well Company is a geothermal and water well contractor serving Maryland's Eastern Shore and the broader Delmarva Peninsula since 1883. Based in Easton and licensed in Maryland, Delaware, and Virginia, the family-founded company handles the full range of well services: domestic, irrigation, commercial, and industrial water wells, as well as geothermal heat pump systems. They work directly with HVAC contractors to size and install ground-source heat pump systems for each property. The company also offers core drilling for building penetrations and uses clean-site drilling practices to protect landscaping and property aesthetics. With more than 140 years of operating history across the Delmarva region, Shannahan maintains full licensing and bonding in all three states, offers free estimates and financing for qualified installations, and provides 24/7 emergency service.
Verified active operator per https://www.shannahanwell.com + drillerdb.com contractor record (Bundle 4 audit 2026-05-28)
Licensed and bonded geothermal contractor serving Maryland, Delaware, and Virginia since 1883 with certified system designers who calculate proper tonnage and vertical loop configurations for optimal efficiency.
