Top 5 ENR Projects to Watch Across the U.S. Right Now

Investment in Enhanced Nutrient Removal (ENR) projects is accelerating across the United States as utilities modernize aging wastewater treatment facilities, comply with stricter environmental regulations, and protect rivers, lakes, and coastal waters.

For contractors, engineers, and construction professionals, these projects represent some of the largest and most technically complex infrastructure opportunities currently underway. From major treatment plant expansions to advanced process upgrades, ENR work is driving demand for experienced Project Managers, Superintendents, Estimators, Project Engineers, Mechanical Engineers, Electrical Engineers, and Controls Specialists.

Here are five ENR projects creating opportunities across the U.S. water infrastructure market.

1. AlexRenew Nutrient Reduction Program | Alexandria, Virginia

Alexandria Renew Enterprises (AlexRenew) is delivering one of the most significant wastewater modernization programs on the East Coast.

The multi-phase program is designed to dramatically reduce nitrogen discharged into the Potomac River and Chesapeake Bay while increasing treatment capacity and improving long-term operational efficiency.

Construction includes new biological treatment facilities, process structures, electrical infrastructure, mechanical systems, instrumentation, controls integration, and extensive civil work.

This project continues to create opportunities for:

• Heavy Civil Construction Professionals
• Project Managers
• Superintendents
• Mechanical Contractors
• Electrical and Instrumentation Specialists
• Process Engineers
• Commissioning Engineers

2. Patapsco Wastewater Treatment Plant ENR Upgrade | Baltimore, Maryland

The Patapsco Wastewater Treatment Plant remains one of Maryland's largest nutrient removal investments and a cornerstone of the state's Chesapeake Bay restoration efforts.

The upgrade focuses on significantly reducing nitrogen and phosphorus while improving the reliability and efficiency of one of the region's largest treatment facilities.

Key construction elements include:

• Biological treatment improvements
• Clarifier upgrades
• Pump station improvements
• Structural concrete construction
• Process piping installation
• Electrical upgrades
• SCADA and controls modernization

These upgrades continue to support demand for experienced water infrastructure professionals across multiple disciplines.

3. Blue Plains Advanced Wastewater Treatment Plant Improvements | Washington, D.C.

Blue Plains is recognized as the world's largest advanced wastewater treatment plant and continues to receive significant investment to maintain its position as one of the most advanced treatment facilities in North America.

Treating approximately 384 million gallons of wastewater every day, Blue Plains requires continuous capital improvements to maintain strict environmental compliance and accommodate future growth.

Ongoing work includes:

• Process optimization projects
• Mechanical system upgrades
• Electrical modernization
• Instrumentation improvements
• Civil rehabilitation
• Plant expansion and renewal projects

These projects continue to generate demand for experienced Project Managers, Construction Managers, Superintendents, Process Engineers, and Commissioning Specialists.

4. Little Patuxent Water Reclamation Plant ENR Expansion | Howard County, Maryland

Howard County continues to invest in upgrades at the Little Patuxent Water Reclamation Plant to improve treatment performance while reducing nutrient discharges into the Chesapeake Bay watershed.

Although smaller than some of the country's flagship projects, this program reflects the growing number of medium-sized ENR projects taking place throughout the United States.

Construction activities include:

• Treatment process upgrades
• New pumping infrastructure
• Mechanical equipment installation
• Electrical improvements
• Process controls
• Site infrastructure improvements

Projects like this provide excellent opportunities for contractors specializing in municipal water and wastewater construction.

5. Wastewater Treatment Plant ENR Programs Across the United States

While headline projects often receive the most attention, the greatest opportunity may actually come from the dozens of wastewater treatment facilities entering design, procurement, or construction throughout 2026.

Cities and utilities across the country are investing heavily in:

• Enhanced Nutrient Removal systems
• Biological treatment upgrades
• Headworks improvements
• Pump station construction
• Biosolids processing facilities
• Chemical feed systems
• Electrical modernization
• SCADA and automation upgrades

Together, these investments represent billions of dollars in infrastructure spending and are expected to support construction activity for years to come.

Why ENR Projects Matter for Construction Hiring

Enhanced Nutrient Removal projects require highly specialized construction and engineering teams capable of delivering technically demanding work within active wastewater treatment facilities.

As more projects move into construction, contractors continue competing for experienced professionals including:

• Project Managers
• Construction Managers
• Superintendents
• Project Engineers
• Estimators
• Civil Engineers
• Mechanical Engineers
• Electrical Engineers
• Process Engineers
• Controls and SCADA Specialists
• Commissioning Managers
• Safety Professionals

Finding experienced professionals with municipal water and wastewater expertise remains one of the industry's biggest challenges, making workforce planning more important than ever.

The U.S. water infrastructure sector is entering one of its strongest investment cycles in decades. From flagship programs like AlexRenew and Blue Plains to dozens of regional ENR upgrades now entering construction, demand for experienced construction and engineering professionals continues to grow.

For contractors, securing skilled talent early will be critical to delivering these complex projects safely, on schedule, and within budget.

At Approach Talent USA, we partner with contractors, engineering firms, and EPC companies across the United States to connect them with the experienced professionals needed to deliver the next generation of water infrastructure projects.