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Proposed Puget Sound no-discharge zone for vessel sewage

A no-discharge zone (NDZ) is a body of water where boats may not release sewage, whether treated or not. We're proposing to establish an NDZ for Puget Sound and certain adjoining waters.

The U.S. Environmental Protection Agency (EPA) determined that a no discharge zone can be established for Puget Sound. Rulemaking is currently in progress.

No Discharge Zone by the numbers
Map of proposed no discharge zone. Includes all marine waters east of New Dungeness Lighthouse, plus lakes Union & Washington and waters connecting them to Puget Sound.

The proposed zone will include all Washington marine waters east of New Dungeness Light, at the east end of the Strait of Juan de Fuca, plus Lake Washington, Lake Union, and the waters that connect them to Puget Sound.


Stay informed. View the open rulemaking.

Where can I dispose of boat sewage?

Find a pumpout in Washington state. 

No Discharge Zone FAQs