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Welcome to KOI Training

Training for Backflow Testing Professionals in the Plumbing, Fire Protection & Lawn Irrigation industries

KOI Training is a training agency for the Ohio Department of Commerce and the Ohio Construction Industry Licensing Board (O.C.I.L.B.) providing renewal training for backflow testing professionals in the Plumbing, Fire Protection and Lawn Irrigation industries. We have training facilities in Cincinnati, Columbus and Sebring, Ohio.

We offer two courses:

  • Certification Classes (a three-day course)
  • Re-certification Classes (a one-day course)