OAR 250-010-0750: Marine Sanitation Device Requirements

(1) All boats with permanently installed boat toilet fixtures shall utilize an effective means to collect, treat or dispose of black waste and sewage in an approved manner as follows: (a) When underway or moored on "navigable waters of the United States" as defined in ORS 830.005, a U.S. Coast Guard approved Type I, II or III Marine Sanitation Device (MSD) must be used to treat, or retain in a holding tank, all generated black waste. (b) When underway or moored on inland "state waters" as defined in ORS 830.005, a U.S. Coast Guard approved Type III MSD shall be used to contain all permanently installed boat toilet fixture black waste and sewage. A Type I or II MSD cannot be discharged while underway or moored on inland "state waters". (2) Any installed wye valve within a boat MSD system regardless of type, shall be secured in the closed position while moored or underway on state waters. Use of a padlock, non-releasable wire-tie, or the removal of the valve handle are considered methods of adequately securing the device. The method chosen must be one that presents a physical barrier to the use of the valve for overboard discharge. (3) All black waste that is collected and stored in a portable toilet or Type III MSD on a boat operating on waters of the state must be properly disposed of utilizing a facility or equipment that collects and transfers black waste from boats, including boat pumpout or dump stations, and must not be discharged into any receiving waters within the territorial limits of this state including the territorial sea.