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HEI’s experience offers a wide range of systems and facilities design that ranges from small scale facilities to large scale municipal and industrial plants. We are structured to ensure that no matter the size, the project receives the level of attention and detail to ensure successful completion and operation.


Water Treatment and Distribution Facilities

  • Water and Wastewater Treatment Plants
  • Water Distribution and Control Systems
  • Pump Stations

Wastewater Collection and Treatment Facilities

  • Wastewater Treatment Plants
  • Sludge Management Facilities
  • Hazardous Waste Treatment Plants
  • Wastewater Collection & Management Systems
  • Reuse Water Distribution and Control Systems
  • Lift Stations

Power Generation and Distribution Facilities

  • Power Generation Plants
  • High, Medium, and Low Voltage Power Distribution Systems
  • Power System Analysis
  • Power Quality Studies and Audits
  • Power Distribution Control Centers

Process Plants and Industrial Facilities

  • Petrochemical Plants
  • Product Manufacturing Plants
  • Semiconductor Fabrication Facilities
  • Pharmaceutical Manufacturing Plants

Public, Academic, and Private Buildings

  • Irrigation Facilities
  • Vehicle Service Garages
  • Commercial Buildings
  • Health Care Facilities
  • Educational and Institutional Facilities
  • City Civic and Exhibit Centers

Public Infrastructure Systems and Facilities

  • Watershed Storm Water Pumping and Controls
  • Power and Controls for Tunneling Systems
  • Airports and Runway Lighting and Controls
  • Metropolitan Park and Ride Facilities
  • Industrial Parks
  • Roadway and Area Lighting
  • Sports and Recreational Facilities