Chapter 4: The Legal Requirements of Boating
Waste, Oil, and Trash Disposal In Mississippi and Federal Waters

It is illegal to discharge waste, oil, or trash into any Mississippi state or federally controlled waters. This is for very good reasons.

• Sewage carries disease and other pollutants that are harmful to people, aquatic plants, and animals.
• Trash thrown into the water can injure swimmers and wildlife alike. It also can plug engine cooling water intakes.
• Pollution is unsightly and takes away from your enjoyment of the water.

Vessel operators need to be aware of the following regulations for waste, oil, and trash disposal that apply to both federally controlled and state waters. The Refuse Act prohibits throwing, discharging, or depositing any refuse matter of any kind (including trash, garbage, oil, and other liquid pollutants) into the waters of the United States.

Signs like these are posted at marine sanitation pump-out stations in Mississippi.

Discharge of Sewage and Waste If you have a recreational vessel with installed toilet facilities, it must have an operable marine sanitation device (MSD) on board. There are three types of MSDs. Types I and II MSDs are usually found on large vessels. Waste is treated with special chemicals to kill bacteria before the waste is discharged. Types I and II MSDs with “Y” valves that would direct the waste overboard must be secured so that the valve cannot be opened. This can be done by placing a lock or non-reusable seal on the “Y” valve or by taking the handle off the “Y” valve. Type III MSDs provide no treatment and are either holding tanks or portable toilets. Collected waste should be taken ashore and disposed of in a pump-out station or onshore toilet. Vessels 65 feet or less in length may use a Type I, II, or III MSD. Vessels more than 65 feet in length must install a Type II or III MSD. All installed devices must be U.S. Coast Guard–certified.

Discharge of Trash

The Act to Prevent Pollution from Ships places limitations on the discharge of garbage from vessels in federal waters. Mississippi Ordinance No. 10.003 places similar restrictions on Mississippi marine waters. It is illegal to dump refuse, garbage, or plastics into any state or federally controlled waters. Many forms of litter can kill birds, fish, and marine mammals.

• You must store trash in a container on board and place it in a proper receptacle after returning to shore.
• If boating on federal waters and your vessel is 26 feet or longer, you must display a Garbage Disposal Placard in a prominent location. The Garbage Disposal Placard is a durable sign that is at least 4 x 9 inches and notifies passengers and crew about discharge restrictions.

In addition, all vessels on marine waters south of Interstate Highway 10 (I-10) must:

• Have on board a clearly marked, closed container for proper disposal of waste, trash, and other garbage. Closed containers must be sealed and of sufficient size for the number of people on board and length of the cruise. Examples of closed containers include clearly labeled cans with lids or water tight garbage bags with appropriate ties.
• Display a sign informing all on board that it is illegal to dispose of waste, trash, and other garbage into the marine waters of Mississippi.

Mississippi Garbage Disposal Sign Vessels on Mississippi’s marine waters south of I-10 must display a sign informing all on board that it is illegal to dispose of waste, trash, or other garbage into the water.

What to Do in Case of Discharge

If your vessel discharges oil or hazardous substances into the water, notify the U.S. Coast Guard by calling 1-800-424-8802. Also notify the Mississippi Emergency Management Agency by calling 1-800-222-MEMA (6362).

Discharge of Oil and Other Hazardous Substances

Regulations issued under the Federal Water Pollution Control Act require all vessels with propulsion machinery to be able to retain oil mixtures on board.

• You are not allowed to discharge oil or hazardous substances. The penalty for illegal discharge may be a fine of up to $10,000.
• You are not allowed to dump oil into the bilge of the vessel without means for proper disposal. Fuel spills can be removed using absorbent bilge pads.
• You must dispose of oil waste at an approved reception facility. On recreational vessels, a bucket or bailer is adequate for temporary storage prior to disposing of the oil waste at an approved facility.
• You must notify the U.S. Coast Guard immediately if your vessel discharges oil or hazardous substances in the water. Call toll-free 1-800-424-8802. Report the discharge’s location, color, source, substances, size, and time observed. You also must call the Mississippi Emergency Management Agency (1-800-222-6362) and report the discharge.
• If boating on federal waters and your vessel is 26 feet or longer, you must display a 5 x 8-inch placard made of durable material, fixed in a conspicuous place in the machinery spaces or at the bilge pump control station, stating the following:

Discharge of Oil Prohibited

The Federal Water Pollution Control Act prohibits the discharge of oil or oily waste upon or into any navigable waters of the U.S. The prohibition includes any discharge which causes a film or discoloration of the surface of the water or causes a sludge or emulsion beneath the surface of the water. Violators are subject to substantial civil and/or criminal sanctions including fines and imprisonment.

Oil Discharge Placard A 5 x 8-inch sign that states the law pertaining to oil discharge

Waste Management Plan

• Ocean-going vessels that are 40 feet or more in length with cooking and sleeping facilities must have a written Waste Management Plan.
• The captain of the vessel is responsible for implementing the Waste Management Plan.
• The Waste Management Plan, identifying the vessel's name and home port, should be posted and should include directives to all persons on board about:
  • Discharging sewage and hazardous substances
  • Discharging garbage and other food waste
  • Disposing of plastics, bottles, and cans
  • Reading applicable placards for additional information
  • Advising the captain in case of oily discharges or diesel spills

Stop the Spread of Nuisance Species!

Introducing non-native species into Mississippi’s waters can upset the balance of the ecosystem, thereby harming the environment. Aquatic nuisance species, such as zebra mussels, quagga mussels, milfoil, and hydrilla, most often spread between waterways by hitching a ride on vessels and trailers. When transplanted into new waters, these organisms proliferate, displacing native species and damaging the water resource.

To prevent spreading aquatic nuisance species:

• Inspect your vessel and trailer, and remove any plants and animals you see before leaving the area.
• Drain your motor, live well, and bilge on land before leaving the area.
• Empty your bait bucket on land. Never release live bait into a body of water or release aquatic animals from one body of water into another.
• Rinse your vessel, propeller, trailer, and equipment.
• Air dry your vessel and equipment for as long as possible.