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50+ Years
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Emergency
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Your Trusted Water Well Drilling Partner in Darlington, PA
Dillan Well Drilling has been a trusted name in water well drilling and pump services since 1919. Our company was founded by George W. Dillan, whose legacy of innovation continues through four generations of family leadership. We specialize in residential and commercial water well drilling, geothermal systems, and water treatment solutions, serving Western Pennsylvania and Eastern Ohio. Our team utilizes modern rotary rigs, cable tool drill rigs, and state-of-the-art equipment to deliver high-yield wells and efficient systems. With over 100 years of experience, we maintain a fleet of four rotary rigs, three pump hoists, and a dedicated service department to meet diverse client needs.

Our expertise extends to well rehabilitation, dewatering, and cathodic protection, ensuring comprehensive groundwater solutions. We hold certifications from the International Ground Source Heat Pump Association and prioritize quality through five-year warranties on pumps and tanks. Our service area spans a 150-mile radius, supported by 22 employees committed to technical excellence and customer satisfaction. We collaborate with architects, engineers, and contractors to provide turnkey installations for geothermal and water systems. Today, Dillan Well Drilling remains a leader in advancing drilling technology while upholding the values of reliability and expertise established in 1919.
Services
Water Well Drilling Geothermal Drilling Pump Sales Well Rehabilitation Pressure Booster Systems Water Treatment Cathodic Protection Mine Stabilization Aquifer Testing Well Video Inspection
Details
  • Year established: 1919
Highlights and features
  • We offer over 100 years of expertise in water well drilling and groundwater solutions.
  • Our team includes IGSHPA-certified professionals for geothermal system installations.
  • We maintain a fleet of four rotary rigs and three pump hoists for rapid response.
  • Five-year warranties are standard on all submersible pumps and pressure tanks.
  • Our service area covers a 150-mile radius with 24/7 emergency support availability.
Associations and certifications
  • International Ground Source Heat Pump Association (IGSHPA)
Services
Water Well Drilling
Dillan Well Drilling specializes in residential and commercial water well drilling, using rotary rigs and downhole hammer equipment to create high-yield wells. We install steel or PVC casing with bentonite grouting to ensure safety and longevity. Our team completes large-diameter wells in challenging geological conditions, serving farms, municipalities, and industries requiring water supplies from 10 to 1,000 gallons per minute.
Geothermal Drilling
We provide turnkey geothermal loopfield installations, including vertical boreholes, horizontal loops, and pond systems. Certified by the International Ground Source Heat Pump Association, our crews use heat-fusion piping and grouting to optimize heat transfer. With over 500 residential and 500-ton commercial systems installed, we partner with HVAC contractors for efficient renewable energy solutions.
Pump Sales and Service
Our inventory includes StaRite submersible pumps with Pentek motors and constant pressure systems. We offer installation, repair, and maintenance using three pump hoists and four service crews. Five-year warranties cover pumps and tanks, while portable equipment addresses hard-to-reach sites, ensuring reliable water delivery for residential and industrial clients.
Well Rehabilitation
We restore well efficiency through chemical treatments, mechanical surging, and video inspections. By identifying issues like reduced yield, we apply targeted solutions such as chlorine treatments or casing repairs. This service extends the lifespan of existing wells and maintains optimal water flow for agricultural and municipal users.
Water Treatment
Our WaterPro equipment addresses contamination, hardness, and purity issues for residential and commercial clients. Solutions range from point-of-use filters to large-scale systems handling over a million gallons daily. We serve industries like hospitality and transportation, ensuring safe, compliant water quality through customized treatment plans.
People
Todd W. Dillan
President
Todd W. Dillan leads geothermal and water well operations, leveraging decades of family expertise. He serves on the Ohio Regional Water Resource Committee and ensures technical excellence through IGSHPA-certified crews and modern drilling equipment.
Mark J. Dillan
Vice President
Mark J. Dillan manages water treatment and pump services, overseeing inventory and installations. With 40 years of experience, he ensures clients receive efficient systems and prompt service, maintaining the company's reputation for reliability.
Questions
What services does Dillan Well Drilling offer?
We provide water well drilling, geothermal systems, pump sales and service, well rehabilitation, water treatment, and cathodic protection. Our expertise includes residential and commercial projects across Western Pennsylvania and Eastern Ohio.
How long has Dillan Well Drilling been in business?
Since 1919, we have delivered drilling and water system solutions, making us a trusted leader with over a century of experience in the industry.
Do you offer emergency services?
Yes, our team provides 24/7 emergency support with portable equipment for urgent pump or well issues.
Are financing options available?
Yes, we offer financing to help clients invest in essential water systems and geothermal solutions.
What areas do you serve?
We operate within a 150-mile radius of Darlington, PA, covering Western Pennsylvania and Eastern Ohio.
How are geothermal systems installed?
Our IGSHPA-certified crews install vertical, horizontal, and pond loopfields using modern drilling techniques and heat-fusion piping for efficient geothermal systems.