National Engineering Firm Devoted to Fixing America’s Failing Infrastructure Celebrates 40 Years of Business

Share Article

National wastewater collection systems firm, RJN, leads the field in innovation.

The technology ensures that the dollars municipalities are investing truly result in improvements to the underground infrastructure.

Some anniversaries are a nod to surviving. Other anniversaries celebrate thriving.

For 40 years, RJN Group, a national wastewater collection systems engineering firm located in the Chicago suburb of Wheaton, IL, has thrived. More specifically, it has led the way with innovative wastewater infrastructure solutions, helping to solve the nation’s aging infrastructure problems.

As the population grows and 100-year storms occur more frequently than ever before, municipalities are desperate for solutions to ease their sewer overflow issues. Simply, their aging infrastructures and growing service areas can’t manage these frequent events.

“There’s only so much capacity you can put into a pipe, and it has to go somewhere,” says Vice President Paul Costa. “Water is overflowing into rivers, streams, and harbors or even into house basements.” A specialized wastewater collection system engineering firm, RJN solves infrastructure issues using industry-accepted practices enhanced by innovative technology, developed over the past 40 years. RJN was a pioneer in utilizing computers to assist with the condition assessment of underground infrastructure. Their technology allows them—and their clients—to have “eyes in the sewer.”

RJN’s innovations are numerous. In 1979, RJN developed the Q vs. I technique for estimating inflow during surcharge conditions. This logarithmic relationship has been reinforced by decades of studies. Three years later, in 1982, RJN pioneered the dual blower smoke testing method which detects 5 to 7 times more defects than the standard single blower technique. Today, RJN leverages the “cloud” and mobile applications to expedite and communicate field data collection, analysis, and client reporting.

RJN’s approach can be summed up in three short statements: “We have an idea. We create. And we make it happen.” Their technology fuses creativity and execution to provide cost-effective solutions to communities under duress. According to Al Hollenbeck, CEO at RJN, “The technology ensures that the dollars municipalities are investing truly result in improvements to the underground infrastructure.”

To celebrate their 40 years of innovation, RJN has produced a video that highlights their expansion from a local Chicago firm in 1975 to a national firm with branches spanning the United States today.

Ranked by Engineering News-Record as a Top 200 Environmental Firm and a Top 500 Design Firm, RJN continues to bring innovation to bear on our nation’s greatest infrastructure challenges. Its work directly affects the quality of life and prosperity of millions of Americans. Building partnerships with municipalities around the nation, RJN rehabilitates infrastructure that supports public health, protects the environment, and encourages economic development.

For more information on RJN’s innovation and approach to providing collection system solutions, visit

Share article on social media or email:

View article via:

Pdf Print

Contact Author

Kirsten Tangeros
CZ Strategy
+1 847-454-5783
Email >

Melissa Parks
Follow us on
Visit website