Commercial Inspection Program

T​he goal of the Commercial Inspection Program is to ensure the integrity and capacity of the sanitary sewer collection system, while providing for the safety of the public and  City workers.  Inspection of commercial users helps to verify adequate pretreatment device maintenance and helps identify those responsible for interference or problems experienced in the collection system or at wastewater treatment plants.  

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Safely Dispose of Fats, Oils, and Grease (FOG)

Pouring Fats, oils and grease (collectively known as FOG) down your sink could result in serious damage to residential plumbing and even our 5,000 miles of municipal sewer pipelines. Instead, take a few short minutes to properly store or trash them.

Store it - Once the oil is cooled, use a coffee filter, cheese cloth or fine metal strainer to filter the oil into an appropriate container.  You can then store the oil in the fridge or freezer for up to 6 months for later use.

Trash it - Once the oil is cool, pour it into small, unbreakable, sealable containers and dispose of in the trash.  Only throw small amounts of oil into the trash, as big jugs can leak, making a mess of collection trucks and disposal facilities.

​It only takes a few small steps to keep your plumbing and the city's sewer system clean.

Fats, Oils, and Grease (FOG)

The City of Phoenix's Commercial Inspection section is an active participant in the multi-city Fats, Oils, and Grease (FOG) Group activities. The coalition is comprised of municipal pretreatment agencies, public and private sewer districts, nonhazardous liquid waste haulers, treatment facilities, and manufacturers of treatment devices, Maricopa County, and the State of Arizona Pretreatment Coordinator.

The goal of the Arizona FOG (AZFOG) Group is to reduce the amount of fats, oils, and grease that enter the sanitary sewer system(s). Each member deals with specific sanitary sewer regulations which are in place to control discharges generated from commercial food establishments (CFE) and residential sources.

A Separate Arizona FOG Group Web Site has been created with more detailed Information.