Chapter 4: The Legal Requirements of Boating
Waste, Oil, and Trash Disposal In Indiana and Federal Waters
It is illegal to discharge waste, oil, or trash into any Indiana
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.
Discharge
of Sewage and Waste
It is illegal to discharge untreated waste into any state
or federally controlled waters.
If you have a recreational vessel with installed toilet facilities, it must have an
operable marine sanitation device (MSD) on board that is approved by the
Indiana Department of Environmental Management. You may get more information
on treatment systems by contacting them at 1-800-451-6027.

Signs like these are posted at pump-out stations in Indiana.
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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. A Type I or II MSD can be operated lawfully on Lake Michigan
only if maintained according to U.S. Coast Guard regulations.
- 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. 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

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 Indiana 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 |
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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 Indiana
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.
Common nuisance species are:
- Eurasian Watermilfoil: A prolific aquatic plant found
in lakes in Indiana. It interferes with boating and displaces
native plants. It is easily spread when plant fragments are caught
and moved on boat trailers, propellers, or anchors, or in wet
wells. Plant fragments can initiate new plants and become well-established.
- Zebra Mussel: A tiny D-shaped mollusk that can clog
water intake pipes, damage vessel engines, and alter native species
populations. Adult zebra mussels can attach to and be moved on
vessel hulls, engines, and other equipment. Microscopic larvae
can get trapped and moved in the water of vessel engines, bilges,
bait buckets, and live wells.
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