BOATsmart! USA Knowledge Base
Module 04 - Safe Responsible Boat Operation
Human Waste Disposal Continued
No Discharge Zones
A ‘No Discharge Zone’ could be a land-locked waterway, a drinking water intake area or a marine habitat that’s environmentally fragile. In these areas, Type I and Type II MSDs (the types that discharge treated waste into the water) must not be used and must be secured to prevent accidental release.
How to secure your MSD:
- Padlock the overboard discharge valves in the closed position.
- Close the overboard discharge valves and remove the handle.
- Lock the door to the space where the toilet is kept.
Identifying Pump-Out Stations
If a marina has a Pump-Out Facility for your MSD, there will be a clearly visible sign to identify the Pump-Out Station.
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