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Great Lakes Water Authority Develops Water Pump Efficiency Program

The program produces data that helps the organization reduce energy consumption and costs.

GLWA System Control Center.png

The Great Lakes Water Authority (GLWA) — which provides water to about 40 percent of Michigan residents and wastewater services for about 30 percent of the state — created a software program that evaluates the real-time efficiency of its water pumps.


The program, Real-Time Efficiency Evaluation for Pumping Stations (REEPS), utilizes records from various intelligent meters installed at GLWA water pumping stations to evaluate real‐time efficiency for each of the pumps on duty. GLWA uses REEPS data to identify the pumps that are oversized or relatively inefficient. The data drives updates to pump heads and efficiency curves in a hydraulic model used for GLWA’s ongoing project of real‐time pumping energy optimization.

REEPS allows GLWA to:

  • Generate daily optimal pumping schedules.
  • Reduce on-peak demand for electricity
  • Lower energy costs.
  • Optimize water transmission paths to reduce pumping requirements.


GLWA can provide a brief presentation on the REEPS methodology to interested districts.