Seattle Fog Regulations

Seattle Fog Regulations

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Grease Trap Services

Since 2011, West Coast Grease Traps has provided the commercial kitchens of King and Pierce County with customized solutions to drainage issues and custom grease trap maintenance programs. We also help our customers develop effective Best Management Practices to control the accumulation of fats, oils, and grease (FOG) by combining comprehensive inspection services with preventative education.

Unlike other grease trap companies that just skim the top of the grease trap, we pump out and dispose of 100% of your grease trap’s content. This extends the life of your grease trap and keeps your drain pipes clear while also ensuring your grease traps are in complete compliance with all city and statewide regulations.


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Seattle Fog Regulations

The City of Seattle has long been a major proponent of promoting environmentally conscious practices and habits amongst both its citizens and businesses. This is especially true in regards to the amount of fats, oils, and grease (FOG) discharged with wastewater in commercial kitchens. Since 1968, Seattle has implemented stringent regulations regarding the management of FOG to minimize its impact on both the environment and local sewer systems. Understanding the requirements put in place by Seattle’s Municipal Code is imperative to keeping your kitchen open and operational.

Mandatory Grease Trap Installation

According to Seattle Municipal Code, the discharge of wastewater containing 100 parts per million of FOG is expressly prohibited (SMC 21.16.300 A. 2). Your business is considered to be in violation if there is visual evidence of an accumulation of FOG originating from your business’s sewer line (SMC 21.16.300 B). To minimize the discharge of excess FOG, Seattle Municipal Code requires the installation and maintenance of grease traps in all commercial kitchens (SMC 21.16.310 A).

Regular Grease Trap Maintenance

In the City of Seattle, it is a requirement that your grease trap receive regular maintenance and be fully operational at all times. Failure to do so will result in penalty fees and, depending on the severity of the situation, could result in your business being indefinitely shut down. As such, Seattle has adopted the 25% Rule as the standard for determining the efficiency of your grease trap (SMC 21.16.310 B). This rule mandates that the amount of FOG in a grease trap’s tank must never exceed 25% of the tank’s capacity. If the tank has reached or exceeded this limit, it must be cleaned out.

Since 2011, West Coast Grease Traps has been providing grease trap repair and maintenance solutions for the businesses of Seattle. Our services are custom-tailored to meet both the needs of our customers, as well as the requirements of the Seattle Municipal Code to ensure your kitchen and grease traps continue to operate efficiently. Contact us today to schedule an inspection!