Complete water and energy solutions you can count on.

From drilling new wells to maintaining existing systems, our fourth-generation team delivers dependable service across every aspect of water well and geothermal work.

What We Do

Our Expertise, Your Peace of Mind

We handle every stage of water well and geothermal work — from initial planning to long-term maintenance. Select a service below to learn more.

Water Well Drilling

Complete planning, drilling, and installation of new water wells for residential and commercial properties using modern rotary and cable tool equipment.

Well Pump Systems & Repairs

Professional troubleshooting, repairs, and full replacements to keep your pump system running reliably. Available for emergency service 24/7.

Water Treatment & Conditioning

Custom water treatment solutions including filtration, softening, and conditioning systems designed to improve the quality of your water supply.

Geothermal Drilling & Loopfields

Expert drilling for geothermal heating and cooling systems including vertical closed-loop and open-loop installations for maximum energy efficiency.

Well Maintenance, Rehabilitation & Abandonmen

Keep your well performing at its best with routine inspections, cleaning, and rehabilitation. We also properly abandon wells no longer in use per state regulations.

Why Dillan

Why customers choose us

Experience, equipment, and accountability backed by four generations of field knowledge and a commitment to doing the job right.

100+ Years

Combined experience across generations

4th Generation

Family-owned since 1919

Full Fleet

6 rigs, hoists & service trucks

150-Mile Radius

Broad regional coverage

Certified

PA Ground Water Association