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Monday 6am - 5pm Tuesday 6am - 5pm Wednesday 6am - 5pm Thursday 6am - 5pm Friday 6am - 5pm

Connelly and Associates, Inc.

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United States
Frederick, MD
Connelly and Associates, Inc.

Connelly and Associates, Inc. Geotechnical, Environmental, Water Well & Geothermal Drilling - Founded in 1991 and Baltimore, Maryland region, operating in five states.
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Established in 1991 as a small environmental drilling contractor with one rig, Connelly and Associates, Inc. now ranks as one of the largest geotechnical, environmental, and well drilling firms in the Washington, D.C. Based out of Frederick, Maryland and Manassas, Virginia, we send experienced drill crews to perform drilling services for water wells, geothermal wells, monitoring wells, soil and ro

ck core borings, geotechnical instrumentation, or supply other services in support of engineering and environmental consultants. We are experienced and certified to install well pumps, pressure systems, and complete geothermal ground loop connection including flushing and filling the system. From track to large truck and ATV-mounted drill rigs, we have the equipment and crews at the ready to complete your drilling project safely and on time. Our drillers are licensed, OSHA trained professionals with experience in all types of borehole advancement, including air and mud rotary, wash borings, hollow stem augering and diamond core drilling.

05/28/2024

We would like to give a huge shoutout to our Employee of the Month for May...

Howie Roberts

Howie's dedication is unmatched – he not only completes every job on time or early, but he takes immense pride in his work.
And let's talk about his recent feats – from his outstanding work on the barge to handling numerous out-of-town jobs with finesse. Remember that time he encountered an artesian aquifer while drilling to install a monitoring well? He modified plans on the spot like a champ! Simply above and beyond. His independent, solution-focused frame of mind has taken him far in the drilling industry and we are proud to have him on our team.
Congrats Howie!

04/26/2024

It is with great pleasure that we recognize our Employee of the Month for April.

Joey Kingsbury

Joey consistently demonstrates a strong work ethic and unwavering commitment to excellence in all tasks. Not only does he excel in his individual contributions, he readily offers support to his colleagues and willingly shares his expertise to help others succeed.

Joey consistently upholds our company values and maintains a high level of professionalism. We are grateful for his dedication and invaluable contributions to our team’s success.

Congrats Joey!

Address

1513 Tilco Drive
Frederick, MD
21704

Opening Hours

Monday	6am - 5pm
Tuesday	6am - 5pm
Wednesday	6am - 5pm
Thursday	6am - 5pm
Friday	6am - 5pm

Telephone

+13016968820

Website

http://www.connellyandassociates.com/

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Videos

Determining depth and quality of bedrock in NW, DC today. We’re using a NQ wireline core barrel on one of our CME LC rigs.

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Our Story

Established in 1991 as a small environmental drilling contractor with one rig, Connelly and Associates, Inc. now ranks as one of the largest geotechnical, environmental, and well drilling firms in the Washington, D.C. and Baltimore, Maryland region, operating in five states. Based in Frederick, Maryland, we send experienced crews to perform services for soil and rock core borings, geotechnical instrumentation, groundwater monitoring wells, water wells, geothermal wells, residential plumbing, temporary traffic control or supply other services in support of engineering and environmental consultants. We are experienced and certified to install and service well pumps and pressure systems. We can complete geothermal ground loop connections, including flushing and filling the system.

Our employees are licensed, trained professionals. No matter if it’s a small drilling job or a large geothermal installation, we have the equipment and crews at the ready to complete your project.