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Water beetle or water spider is a term used to describe the person responsible for maintaining correct inventories on the production line so that line employees have no need to stop working. The term stems from the fast movement of this employee as they check stock levels and resupply each station as necessary.

For a better understanding of Water Beetles and an overview of Lean Six Sigma, check out our Free Lean Six Sigma Yellow Belt Training, Green Belt Training or Lean Training.

Tracy O'Rourke

Tracy is a Master Black Belt at, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. She is also a Lean Six Sigma Green Belt Instructor at UC San Diego and teaches in San Diego State University’s Lean Enterprise Program. For almost 20 years, she has helped leading organizations like Washington State, Charles Schwab and GE build problem-solving muscles.
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