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Commercial Plumbing

How often should a produce fogger’s water reservoir be cleaned in Maricopa County?

Updated October 4, 2026
Quick Answer

Follow the manufacturer’s maintenance specifications and whichever cleaning requirement is more stringent: its instructions or the adopted FDA Food Code procedure. Maricopa County adopts FDA Food Code 2017, whose Section 5-205.14 sets an at-least-weekly reservoir and aerosol-contact cleaning procedure. Restored spray or a filter change does not establish that this work was completed.

Which system does the reservoir rule cover?

Identify the equipment before choosing a cleaning schedule. FDA Food Code 2017 Section 5-205.14 addresses a water reservoir supplying a device such as a produce fogger. It requires maintenance under the manufacturer’s specifications and cleaning under whichever is more stringent: those specifications or the code’s stated procedure.

Maricopa County’s Environmental Health Code, Chapter VIII Section II Regulation 1, adopts the 2017 edition, with listed local changes. It does not automatically adopt later editions or amendments. Use that adopted provision for the food-establishment question.

Record whether the installed unit actually has a reservoir, which parts contact the water or aerosol, and its complete model. This is a food-display equipment task. A patio-misting descaling routine does not establish the approved care for a produce fogger.

What does the weekly baseline include?

Section 5-205.14(B) says its procedure includes at least these parts and is conducted at least once a week:

  • Drainage and complete disassembly of water-contact and aerosol-contact parts.
  • Brush-cleaning the reservoir, aerosol tubing and discharge nozzles with suitable detergent.
  • Flushing the complete system to remove detergent and accumulated particles.
  • The specified hypochlorite rinse of the reservoir, tubing and discharge nozzles.

Use the complete provision together with the equipment instructions. This outline is not a chemical-mixing recipe or permission to put an improvised cleaner into the feed line. Have the responsible operator establish the applicable procedure, permitted access and products. Follow the more stringent requirement rather than assuming every manufacturer allows the same disassembly or chemicals.

A spray that looks normal does not show whether those internal surfaces were cleaned. Likewise, clearing a nozzle blockage addresses flow, not completion of the prescribed food-contact care.

Who should handle equipment care and building plumbing?

Assign the reservoir procedure to staff or the equipment provider following the actual instructions. Resolve safe isolation and access before opening the unit. A model without an available matching procedure needs manufacturer and food-establishment guidance, not a guessed sequence from another mister.

Separate that task from the building’s supply valves, water treatment, backflow protection and waste connections. Obtain the actual equipment documents for any proposed plumbing change. Repaired piping or a replaced filter does not demonstrate completion of the reservoir procedure.

Section 5-205.13 separately addresses scheduled inspection and service of water-system devices such as filters and backflow preventers, with service records maintained by the person in charge. Do not confuse those records with proof that every connected appliance was cleaned.

How should the work appear on the maintenance plan?

Put the equipment identity, applicable procedure, responsible person and next due date on the commercial maintenance plan. Record the work actually completed and any inaccessible, damaged or unresolved component. Keep the manufacturer instructions available so a replacement does not inherit the previous unit’s method.

A building water-management program addresses a separate risk-management question. Keep its applicable controls alongside the food-device requirements rather than treating one checklist as completion of both.

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