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Frederick County

Civil & Environmental Engineering Firm

When you want a civil and environmental engineering firm that delivers on time, every time, and does not break promises, you need ARRO Consulting. At the cornerstone of our company’s history is our reputation for a client-focused approach and customized solutions to the most complex of issues. That is why we have over 75 years of experience serving Frederick County and the mid-Atlantic region. We also incorporate innovative technologies so that your project is completed in the most time- and cost-efficient manner.

The Engineering Firm of Choice in Frederick County

ARRO Consulting has over 75 years of experience working with private, municipal, and industrial clients on a variety of civil and environmental engineering projects. Our key focus is ensuring the client has their questions and concerns addressed swiftly, but we also maintain core values of dependability and accountability. This ensures that your project is completed within budget and on time, and we do that while remaining transparent through the entire process.

That is why businesses and municipalities within Frederick County and the mid-Atlantic region have chosen ARRO Consulting as the engineering firm of choice. Whether you need construction management, compliance reporting, wastewater system planning, reviews or reporting, ARRO Consulting has you covered.

State-Of-The-Art Solutions When You Need Them

Every client has different issues, which require tailored solutions. ARRO’s staff dedicates much of their time to addressing your concerns and developing long-term results. One of the ways we do this is with cutting edge technology. We have been leaders in the implementation of technologies like Geographic Information Systems (GIS) for over 40 years and use such innovations to make models that provide insight into your project. ARRO Consulting is also a Department of Environmental Protection (DEP) approved GIS course provider for water and wastewater operators.

Furthermore, we have solutions for organizations that require mobile and computer applications, as well as administrative software, reporting, and automation programs.

Commitment To You & The Community

Our track record of success spans over 75 years. ARRO Consulting has a reputation of excellence that is founded on our dedication to our clients and the communities of Frederick County. ARRO’s staff is more than capable of assisting your organization with a variety of tasks, whether it is planning and designing construction, developing digital applications, assisting with permits, or something else. We maintain transparency and work within your budget—and that is what makes us a top rated civil and environmental engineering firm.

Proudly Serving The Following Areas:

  • Frederick 
  • Mount Airy
  • Urbana
  • Thurmont
  • Brunswick
  • Walkersville
  • Middletown
  • Boonsboro
  • Emmitsburg
  • Adamstown
  • Jefferson
  • Meyersville
  • Point of Rocks
  • Woodsboro



Headquartered in Lancaster County with five other strategically located offices in PA and MD