Engineering Firm Celebrates 40 Years of Business

Nov. 19, 2015
The company is focused on helping solve the nation's aging infrastructure problems

For 40 years, RJN Group, a national wastewater collection systems engineering firm located in the Chicago suburb of Wheaton, Ill., has provided 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 seeking solutions to ease their sewer overflow issues. Simply, their aging infrastructure and growing service areas cannot manage these frequent events.

“There’s only so much capacity you can put into a pipe, and it has to go somewhere,” said RJN 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 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.”

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 five to seven times more defects than the standard single blower technique. Today, the company leverages the cloud and mobile applications to expedite and communicate field data collection, analysis and client reporting.

To celebrate the 40-year anniversary, RJN has produced a video that highlights the company's expansion from a local Chicago firm in 1975 to a national firm with branches spanning the U.S. today. 

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