Water & Wastewater


At McGill Associates, our wastewater team members and engineering technologies are continuously evolving to stay current with the ever-changing regulatory and financial industry obstacles. Through decades of experience and through providing pioneering and cost effective approaches, we have developed a subject matter expertise that is a differentiator for us in this industry. No project is too great or too small for the McGill Associates team. We have assisted communities with a wide range of wastewater engineering projects, from small, rural and private wastewater management systems, to large and regional municipal wastewater treatment systems.

Furthermore, our team diligently designs flexibility and longevity into every project to avoid unnecessary future costs associated with operation and maintenance of wastewater facilities. Our team specializes in all facets of wastewater engineering.

case study

CLIENT: Town of Robbinsville, North Carolina
PROJECT DESCRIPTION: The Town of Robbinsville’s wastewater treatment plant (WWTP) did not have sufficient capacity to treat projected flows. Therefore, the Town constructed a new WWTP at a larger site to improve capacity to treat future projected flows. The project was funded by a combination grant/loan from the USDA-Rural Development, grants from the Appalachian Regional Commission, and the North Carolina Golden Leaf Foundation. The capacity of the new plant increased from 630,000 GPD to 850,000 gallons per day (GPD). A new influent pump station with approximately 3,000 LF of 10-inch force main were also constructed as part of the project to convey flow from the existing WWTP to the new WWTP. Additionally, the project included providing water service to the new site and rerouting the existing Sandhole Road to allow access to the adjacent property. McGill Associates provided assistance with planning, funding, design and construction administration for the project.

at a glance
  • Wastewater Treatment Plant / Facilities Design
  • Treatment System Efficiency Analysis
  • Sanitary Sewer System Planning / Design
  • Infiltration / Inflow Studies
  • 201 Facilities Planning
  • Residuals Management Systems
  • Pretreatment Planning / Permitting
  • On-Site Wastewater Disposal Systems
  • Lift Station Design
  • Disinfection Systems Evaluation / Design
  • Low-Pressure Sewer Systems
  • Instrumentation / Process Monitoring (SCADA)
  • Sewer System Mapping / GIS
  • Vacuum Sewer System Design
  • Sludge Dewatering and Odor Control
  • Spray Irrigation Systems
  • Community Subsurface Systems
  • Sewer Rate Studies
  • Aerial Sewer Crossings
  • Treatment Plant Start-up and Training
  • Treatment Plant Operations Manuals
  • Emergency Response Plans
  • Safety and Security Planning