- Environment & Conservation
- Construction & Development
- Businesses & Key Accounts
- Help & FAQs
- About Us
Water and sewer map for buildings and land parcels in Seattle.
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:
Information provided by the research map is for preliminary planning only and does not replace any application approval or permitting processes by City of Seattle departments and other jurisdictions.
To find your property:
Example of suggested addresses.