Time as a Public Health Control (TPHC)

Time as a Public Health Control (TPHC) is a food-safety method that uses a documented time limit instead of continuous temperature control for certain potentially hazardous foods. It is permitted only under specific conditions in jurisdictions whose food codes authorize it. The method requires a written procedure, clear time marking and disposal or other corrective action at the end of the permitted period.

How TPHC works

Under the US FDA Food Code, one commonly used option allows eligible food to be held without temperature control for up to four hours when the required written procedures and time marking are followed. Other options and conditions may apply, and Canadian or local requirements may differ.

Key controls

• Confirm that the food and operation are eligible under the applicable code.
• Document the procedure before using time as the control.
• Mark the time when the food leaves temperature control.
• Use the permitted time limit and discard food when the limit is reached.
• Do not return food to temperature control for later use unless the applicable code specifically permits it.

Chef’s safety note: TPHC is not a general permission to leave food on a counter or buffet. Confirm requirements with the local health authority and follow the written food-safety plan exactly.

Key distinction: TPHC is a specific, regulated alternative control method; ordinary time-temperature monitoring and hot or cold holding remain the standard approach in most operations.