Equipment on Boat:
- Installed toilet without Marine Sanitation Device (MSD)
- Legal: No
- Restrictions and Comments: USCG regulations require that all installed toilets have an attached MSD
- Installed toilet with macerator
- Legal: No
- Restrictions and Comments: USCG regulations require that all installed toilets have an attached MSD
- Installed toilet with Type I MSD *
- Legal: Yes (but not in "No Discharge Areas")
- Restrictions and Comments: Acceptable on boats <65'. Discharge is <1000 per 100 milliliters of fecal coliform bacteria with no visibly identifiable floating solids
- Installed toilet with Type II MSD *
- Legal: Yes (but not in "No Discharge Areas")
- Restrictions and Comments: Acceptable on any size boat. Found on larger boats because of electricity and space requirements. Discharge is <200 per 100 milliliters of fecal coliform bacteria with <150 milligrams of suspended solids per liter.
- Installed toilet with Type III MSD *
- Legal: Yes
- Restrictions and Comments: Keeps waste out of water by using a holding tank. Discharge at onshore pumpout facility or via "Y" valve when more than 3 miles offshore in the ocean.
- Portable toilet
- Legal: Legal on any Boat
- Restrictions and Comments: Doesn't fall under USCG regulations of MSDs
- No installed toilet
- Legal: Yes
- Restrictions and Comments: Remember No Discharge Area rules
The U.S. Environmental Protection Agency provides additional information on MSDs.