Conservation Tips

Wastewater collected from your house is not only from the toilets, but also from showers, dishwashers, sinks, and your clothes washer. It all goes to our Wastewater Treatment Plant in the Sunnyside Valley where is treated until it is approximately 96% pure.

Is it okay to dump grease down my house drains?

No, dumping grease down your house drains will cause grease buildup in your own drain lines. Some people believe that if you mix hot water with the grease it will not clog your lines. While this practice may not clog the lines in your immediate house, by the time the grease gets to your sewer pipe it will have cooled enough to build up. Keep in mind, you are responsible for the maintenance of your side sewer and calling out a plumber for this type of maintenance can be very expensive.

Sewer Pipe

Is it okay to dump car oil down the sanitary drain system in my house?

No, oil causes the filtration system at the treatment plant to fail and the filtration system must be cleaned and replaced causing thousands of dollars in damage.

Is it okay to flush plastic items down the toilet?

No, flushing plastic items and other non-biodegradable material, such as many brands of baby-wipes, down the toilet causes problems in sewer lines. The material will hang up in your line and cause blockages. If the material reaches the treatment plant it will cause problems at the treatment facilities also.

What is this manhole for in my back yard?

The manhole is used for access to the system for maintenance and cleaning.

What should I do if I see liquid flowing out of a sewer manhole?

Contact the Lake Stevens Sewer District at (425) 334-8588. If water is flowing out of a rectangular grate then it most likely is surface water run-off and you may contact Snohomish County Drainage Services at 425-388-6467.

How are sewer lines maintained?

Video scanning equipment is used in the lines to observe potential problems such as root growth, grease buildup, or failing pipe. Flushing equipment is used to remove grease and roots from lines.

Where is the wastewater treated?

The wastewater collected in the greater Lake Stevens area flows to the Districtís wastewater treatment plant located in the Sunnyside Valley.

How does the treatment process work?

Visit the Water Enviroment Fedearation site for more information on the wastewater treatment process.

Is there anything to keep in mind when I landscape my yard?

When planting trees or shrubbery consider the location of your sewer line so as not to plant over or near it. Roots can enter into pipes and cause clogs.

Call the Lake Stevens Sewer District at (425) 334-8588
 to report a problem or obtain additional information.
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