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For more information about the Regional Infiltration and Inflow Control Program, please contact Maryann Petrocelli.

Wastewater Treatment Division
King Street Center
Suite 0505
201 South Jackson Street
Seattle, WA 98104

Get Directions to our office location in Seattle, Washington

What can you do?

Here's what you can do to reduce inflow and infiltration in the sewer system, to help boost our capacity to treat wastewater during the wet season.

Inspect your roof gutters and downspouts to see if they are connected to the sewer system. If so, have them disconnected.

For information about the sewer system in your neighborhood, contact your local sewer service provider.