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

t is illegal to discharge waste, oil, or trash into any Rhode Island 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.

Pumpout Station sign

Signs like these are posted at pump-out stations in Rhode Island.

MSD and Pump-Out Station Diagram

Discharge of Sewage and Waste

It is illegal to discharge any treated or untreated sewage into the waters of Rhode Island. All waters of Rhode Island have been declared “No Discharge Zones.”

If you have a recreational vessel with installed toilet facilities, it must have a marine sanitation device (MSD) on board and be sealed to prevent discharge into the water.

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.

It is illegal for a vessel with a permanently installed marine toilet to operate or moor for more than 30 days on state waters unless such vessel prominently displays a valid “no discharge certification” decal.

  • There are two possible decals. One decal indicates that the boat owner or operator has taken the steps necessary to prevent the discharge of sewage into state waters. The other decal shows that the boat has no marine toilet or no through-hull fitting that would allow sewage to be discharged overboard.
  • The decal is valid for four years and may be obtained from any certification agent upon inspection and testing of toilets, MSDs, and related plumbing on the boat.
  • Vessels carrying a valid U.S. Coast Guard certificate of inspection are exempt.
  • Failure to display a decal may result in a fine of up to $100.
  • For a list of authorized MSD certification agents, visit the DEM website at: www.dem.ri.gov/programs/benviron/water/shellfsh/pump/index.htm.

Discharge of Trash

The Act to Prevent Pollution from Ships places limitations on the discharge of garbage from vessels. 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 while on board and place it in a proper receptacle after returning to shore.
  • If boating on federally controlled 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.

Garbage Disposal Placard

Garbage Disposal Placard

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 Rhode Island Department of Environmental Management and report the discharge.
  • If boating on federally controlled 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:

Oil Discharge Placard

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

Oil Discharge Prohibited placard

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!

Stop aquatic hitchhikers!Introducing non-native species into Rhode Island 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.
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