Seattle’s Water and Sewer Map

The City of Seattle has a searchable map for locating the water and sewer lines to your house.

Property owners, homeowners, and developers can research Seattle’s existing drinking water, drainage, and sewer infrastructure with the Development Services Office’s (DSO) water and sewer map.

Use the map to research water lines for new water service connections, side sewer and drainage mains, parcel zoning and land use, and environmentally critical areas.

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