White Donohue Logo
Menu
Locations
News
New Location. Same Great Team.
Our Chicago office is now located at 125 South Wacker Drive, Suite 1600, Chicago, IL 60606
City of Oshkosh Breaks Ground on Major Wastewater Treatment Plant Upgrades
The city of Oshkosh’s wastewater treatment plant upgrades represent a major investment in cleaner water, long-term compliance, and resilient infrastructure. The project modernizes critical treatment processes to better serve the community and protect the Fox River and Lake Winnebago watershed.
Learn More
Innovative Wet Weather Treatment Advances Elkhart’s WWTP Expansion
Elkhart’s Phase 2 wastewater treatment plant expansion advanced an innovative wet weather treatment approach using cloth media disc filters. The project improved system reliability, achieved regulatory approval, and delivered significant cost savings while supporting long term CSO compliance.
Learn More
Advancing Nutrient Removal at the Caledonia WWTF
The City of Caledonia and Donohue partnered to implement a multi-barrier biological treatment system that effectively reduces nitrogen and phosphorus while protecting groundwater in Minnesota’s sensitive karst region, delivering measurable environmental benefits and advancing sustainable wastewater treatment.
Learn More
New Location. Same Great Team.
Our Chicago office is now located at 125 South Wacker Drive, Suite 1600, Chicago, IL 60606
City of Oshkosh Breaks Ground on Major Wastewater Treatment Plant Upgrades
The city of Oshkosh’s wastewater treatment plant upgrades represent a major investment in cleaner water, long-term compliance, and resilient infrastructure. The project modernizes critical treatment processes to better serve the community and protect the Fox River and Lake Winnebago watershed.
Learn More
Innovative Wet Weather Treatment Advances Elkhart’s WWTP Expansion
Elkhart’s Phase 2 wastewater treatment plant expansion advanced an innovative wet weather treatment approach using cloth media disc filters. The project improved system reliability, achieved regulatory approval, and delivered significant cost savings while supporting long term CSO compliance.
Learn More
Advancing Nutrient Removal at the Caledonia WWTF
The City of Caledonia and Donohue partnered to implement a multi-barrier biological treatment system that effectively reduces nitrogen and phosphorus while protecting groundwater in Minnesota’s sensitive karst region, delivering measurable environmental benefits and advancing sustainable wastewater treatment.
Learn More

Water Is What We Do

Employee-owned. Multi-disciplined. Water-focused.

Donohue & Associates has a rich history of working with communities and industries throughout the Midwest to provide water-focused solutions. Since our founding in 1997, we have partnered with over 400 clients, specializing in client-focused planning, design, and construction phase services for wastewater, drinking water, and stormwater projects.

0 +
Clients Served
Since 1997
0
Engineering Excellence
Awards
0

Average Years of Employee Experience

# 0

Wastewater Treatment
Plant ENR Ranking

Top 25 ENR Wastewater Firm Graphic
ENR Top 200 Environmental Firm graphic

Wastewater

Donohue has proven technical expertise in all facets of wastewater treatment and collection services.


Learn More

Drinking Water

Our engineers are at the forefront of the water industry. With our experienced staff, Donohue can help water utilities meet the challenges of providing safe, refreshing, and economical drinking water.
Learn More

Stormwater

Our stormwater services provide comprehensive solutions for clients concerned about both the quantity and quality of stormwater.


Learn More

Join our team!

View Open Positions

Find Out What's New

View News

Featured Project

Mark Rokita and Kam Law Accepting ACEC IL Award

2025 ACEC Illinois Engineering Excellence Award

Donohue & Associates and Four Rivers Sanitation Authority received a 2025 Engineering Excellence Special Achievement Award from the American Council of Engineering Companies (ACEC) of Illinois for the Disc Filters for Innovative Primary Treatment project. 

Learn More

Award-Winning Projects

View More