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Chapter 173-228 WAC

The Department of Ecology is proposing a new rule - Chapter 173-228 WAC Vessel Sewage No Discharge Zones. This rule will establish a Puget Sound No Discharge Zone, which would prohibit the release of sewage (black water) from vessels, whether treated or not.

The Puget Sound No Discharge Zone would cover 2,300 square miles of marine waters of Washington State inward from the line between New Dungeness Lighthouse and the Discovery Island Lighthouse to the Canadian border, and fresh waters of Lake Washington, Lake Union, and connecting waters between and to Puget Sound.

Rulemaking Timeline


Announcement Phase (CR-101)

Filing date:
Jul. 5, 2017

Announcement documents

Rule Development Phase

July 5 - October 4, 2017

Public input & involvement

No public meetings were held during this phase.

Rule Proposal Phase (CR-102)

Filing date:
Oct. 4, 2017

Rule proposal documents:

Comment period

Comments were received through November 30, 2017
We received comments in the following ways:
  • Online
  • During public hearings
  • By mail
All comments are available for review.

November 13, 2017: Public Hearing Webinars
Ecology accepted verbal comments at an afternoon and an evening webinar hearing.

November 15, 2017 - In-person Public Hearing
Ecology accepted written and verbal comments during the in-person hearing at South Seattle College's Georgetown Campus.

Additional Languages


To request ADA accommodation for disabilities, or printed materials in a format for the visually impaired, call Hanna Waterstrat at 360-407-7668 or email hanna.waterstrat@ecy.wa.gov. Persons with impaired hearing may call Washington Relay Service at 711. Persons with speech disability may call TTY at 877-833-6341.