Code Library
Phoenix Plumbing Codes and Permits
Every Phoenix plumbing rule we cover, sorted by topic. Each page says what the rule means in plain English and links to the official Phoenix source.
Backflow Prevention
Backflow Prevention in every cityWater Conservation
Commercial Plumbing
Commercial Plumbing in every city- City Code · Updated Jul 2026Phoenix City Code Chapter 28: The FOG (Grease) Program for Food-Service BusinessesPhoenix City Code Chapter 28 bars food-service businesses from putting fats, oils, and grease into the city sewer. Under the City's FOG program, a restaurant must install an approved grease interceptor, pump it on schedule, keep service records, and pass city inspections.
- City Code · Updated Jul 2026Phoenix Industrial Wastewater Discharge Permit (City Code Ch. 28)An industrial or commercial business in Phoenix that sends process wastewater to the public sewer usually needs a city wastewater discharge permit first. Phoenix City Code Chapter 28 and its Industrial Pretreatment Program set the rules. This is separate from the FOG grease program, which covers food-service kitchens.
Also in the library: Uniform Plumbing Code · Arizona
Need It Done To Phoenix Code?
Call a licensed plumber who pulls the permit and passes inspection the first time.