Pre-Treatment Program

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The Lake Stevens Sewer District is now required by the EPA and the Washington State Department of Ecology to institute a Wastewater Pre-Treatment Program.  All commercial and industrial establishments that discharge water into the District’s collection system are required to participate.  This program is intended to save your business and the District the substantial costs of fixing and cleaning up sewage back-ups, as well as protecting our eco-system for many years to come.

Pre-Treatment Regulations

Phase I of this program is dedicated to the management of Fats Oils and Grease (F.O.G.).  F.O.G. 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, 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 F.O.G. into the sewage collection system, as mandated by our sewer use ordinance, the EPA and the Washington State Department of Ecology.

We will work closely with you to help your business comply with the Lake Stevens Sewer District’s Pre-Treatment regulations and standards, and will be able to give your managers and staff guidance in managing the wastewater discharged from your place of business. 

For questions, please contact us by email at [email protected]


Grant Application 

Grease Removal System Maintenance Log 

FOG Education Instructions 


Amalgam Waste Best Management Practices

Grease Trap 101

How to Clean A Grease Trap Video

FOG Control Training Instructions

Local Pumping Companies 

For additional forms please contact us by email at [email protected]