Pretreatment Program

The Lake Stevens Sewer District is now in the third year of the pretreatment program, formally referred to as Fats Oils and Grease (FOG) program, as required by Federal and Washington State regulations. The goal of this program is to prevent problems in the sewer system, maintain awareness of harmful substances that should not go down the drain, and save everyone money by avoiding sewer emergencies and unnecessary maintenance costs.

Here are a few things you need to know.

The District Pretreatment Staff conducts inspections quarterly/four times annually. When the inspector is on-site, be prepared to show records clearly documenting the business’ grease removal device was pumped or in-house maintenance and cleaning was completed.
Click HERE for a list of Pumping Companies.

A flat annual fee will be on your April billing statement. The fee is assessed based on the business’ 2020 annual metered water usage. Businesses with an annual usage up to 9000 ft3 will be charged $150; 9001 – 18,000 ft3 will be charged $325; and greater than 18,001 ft3 will be charged $500. Additional information on fees and administrative penalties can be found in Pretreatment Regulations.

The District spends a significant amount of money and man-hours unclogging and cleaning wastewater collection lines. As these costs are ultimately passed on to the District’s customers through our wastewater rates, the less the District must spend on preventable pretreatment issues, the less these costs are passed on to our customers. Thank you in advance for any action you take toward this goal and helping to keep our sewer system working. Please feel free to contact the Pretreatment Team with questions or concerns

Pretreatment Regulation

This program is dedicated to the management of Fats Oils and Grease (FOG).  FOG is a major source of pipe blockages and sewage backups.  Examples include kitchen cooking grease, vegetable oils, bacon grease, meat fats, food wastes, gravy, sauces, baked goods, cheeses, butter, dressings, milk, etc.  The cost for emergency maintenance for these backups can have large financial impacts on everyone affected, as well as health and business losses.  One of the primary goals of this program is designed to eliminate discharges of FOG into the sewage collection system, as mandated by our sewer use ordinance, the EPA and the Washington State Department of Ecology.

For questions, please contact us by email at fog@lkssd.orgOr by phone at 425-334-8588

How to clean a restaurant grease trap video, watch here. 

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Document Center

The Document Center provides easy access to public documents. Click on one of the categories below to see related documents or use the search function.

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Pretreatment Forms3 documents

  • FOG Training Log
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  • Grease Removal Maintenance Log
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  • Permit Pretreatment Device
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Best Management Practice4 documents

  • Sand-Oil Interceptor Maintenance
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  • Grease Trap 101
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  • Local Pumping Companies
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  • Pretreatment Kitchen Training Guide
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