Serving Generations Through Community Projects.

French-Reneker-Associates, Inc. has been serving Iowa and northern Missouri since 1952 with a full range of environmental and civil engineering services.   The services we provide have grown along with the communities we serve, to include:  sanitary sewer, water distribution, dams, wetlands, grassed waterways, airport, street and highway, water treatment, wastewater treatment, industrial park, and subdivision design.

Our website is designed to give you an overview of who we are and what we do. We welcome your feedback about our site and your inquiry about how we might help you with your next engineering project.


Ottumwa Water & Hydro River Crossing Project Receives Engineering Excellence Award

On May 17, 2023, Ottumwa Water & Hydro, along with the design team of Brierly Associates and French-Reneker-Associates, was recognized with the Honor Award in the water and wastewater category…

French-Reneker-Associates Goes Solar

French-Reneker-Associates, a southeast Iowa civil and environmental engineering company, recently installed a solar array behind its office on South Main Street in Fairfield. The 40.8 kilowatt (kW) array…

227th Street, Fairfield

The paving of 227th Street on the south edge of Fairfield is in the final stages of construction!  The project includes a half mile of pavement on 227th Street and the addition of a southbound left turn…