Boat sewage discharge regulations
(Code of Federal Regulations -40 CFR 140.1-3)
In all freshwater lakes, impoundments and reservoirs
(Sole State Waters) not accessible by boat from the ocean, it is prohibited to discharge any sewage
-treated or untreated. All Y-valves on boats in Sole
State Waters must be secured in the closed position while moored or in operation. Use of a padlock, a non-releasable wire tie, or the removal of the valve handle is considered adequate for securing the device. The method chosen must be one that creates a physical barrier to the use of the valve.
On waters designated as federally navigable (Columbia, Willamette, Snake and on navigable portions of all coastal rivers), the use of an approved marine sanitation device (Type I or II) is permitted to discharge treated sewage. The discharge of untreated sewage (Type III holding tank system) is only permitted beyond the 3 mile ocean limit.
Many boats carry portable toilets and stationary toilets for convenience. Large boats may have a Type I or II marine sanitation device (MSD) that pre-treats sewage before discharging. Most boats in Oregon, however, have marine heads with Type III MSDs (holding tanks with no treatment), or carry portable toilets on board.
Proper disposal of boat sewage is crucial to keeping our waters clean for swimming, waterskiing, boating and fishing. Please empty holding tanks and portable toilets at public pump-outs or dump stations. Small boats can also use floating restrooms.
Visit the Boat Oregon Map to find out where there are free, public pump-outs and dump stations. Please report illegal sewage discharges to the U.S. Coast Guard or the Water Quality Division of the Oregon Department of Environmental Quality immediately when witnessed. Violators will be prosecuted.