No Vessel Discharge Areas
Remember, it is illegal to discharge untreated boat sewage into any of California's lakes, rivers, reservoirs, or coastal waters within the three-mile U.S. territorial limit.
In addition, there are 11 federal "No Discharge" Areas in California where the discharge of any untreated or treated boat waste is prohibited:
Typical Type III MSD
The most popular of all MSD is the holding tank that is mounted within the hull of the boat.