We have established a No Discharge Zone (NDZ) for Puget Sound and certain adjoining waters. An NDZ is a body of water where boats may not release sewage, whether treated or not. The NDZ will help protect public health, water quality, and sensitive resources.
Chapter 173-228 WAC was adopted on April 9, 2018 after a five year public process and EPA approval. The rule is effective as of May 10, 2018. However, certain commercial vessels have a five year delay before the rule begins. There is no change for graywater discharges.