Westech’s thorough knowledge of sanitary engineering enables us to design large or small sewerage systems to meet the wide range of our client’s needs. The first full-scale municipal constructed wetland in Oregon, built for the City of Mt. Angel, is one example of how Westech’s experience meets those needs. From planning and grant coordination to design and construction management, our work is done on time and within budget. Our professionals have a wide range of expertise in wastewater treatment technologies ranging from simple facultative lagoon systems to membrane bioreactor systems. All of our engineers have extensive experience with wastewater pump station design and collection system piping. We also offer our clients special expertise related to collection system rehabilitation including several trenchless technologies.

Specific services we provide include:

  • Wastewater Facilities Plans
  • Infiltration and Inflow Studies and Analysis
  • Preliminary Engineering Studies
  • NPDES Permit Renewal/MAO Assistance
  • Collection System Rehabilitation Plans
  • Collection System Design
  • Wastewater Pumping Stations
  • Treatment and Disposal Systems


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