
The United States signed the Convention on the Prevention of Marine Pollution by Dumping Wastes and Other Matter, also known as the London Convention, in 1972. The London Convention entered into force in 1975 and was one of the first global conventions to protect the marine environment from human activities. The US ratified the treaty in 1974. The London Convention addresses the deliberate disposal of wastes and other matter from vessels, aircraft, platforms, and other man-made structures at sea. Contracting parties to the London Convention agreed to control dumping by implementing regulatory programs and requiring permits for the dumping of wastes and prohibiting the dumping of certain hazardous materials.
| Characteristics | Values |
|---|---|
| Name of Treaty | Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter, 1972 |
| Also Known As | London Convention |
| Objective | To promote the effective control of all sources of marine pollution and to take all practicable steps to prevent pollution of the sea by dumping of wastes and other matter |
| Year Signed by the US | 1972 |
| Year Ratified by the US | 1974 |
| Year Entered into Force | 1975 |
| Number of Contracting Parties as of September 2024 | 87 |
| Related Protocols/Conferences | London Protocol (1996), International Conference on Marine Pollution (1973) |
| US Status on London Protocol | Signed but not ratified |
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What You'll Learn

The US ratified the London Convention in 1974
The United States ratified the London Convention on April 29, 1974. The Convention, officially titled the Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter 1972, is one of the first international agreements for the protection of the marine environment from human activities. It addresses the deliberate disposal of wastes and other matter from vessels, aircraft, platforms, and other man-made structures at sea, as well as the disposal of those objects themselves.
The London Convention entered into force on August 30, 1975, and as of September 2024, there are 87 Contracting Parties. The United States is one of these Contracting Parties, having signed the Convention in 1972 and ratified it in 1974. The Convention provides an international standard and framework for countries to individually and collectively protect and preserve the oceans from pollution caused by waste dumping.
The Contracting Parties to the London Convention have agreed to control dumping by implementing regulatory programs to assess the need for, and the potential impact of, dumping. The Convention requires that Contracting Parties issue permits for the dumping of wastes and other matter at sea and generally prohibits the dumping of certain hazardous materials. Over time, the Contracting Parties have amended the treaty by banning ocean dumping of certain wastes.
In 1996, the Contracting Parties to the London Convention concluded negotiations toward a new, free-standing treaty known as the London Protocol, which aimed to modernize and eventually replace the London Convention. The London Protocol entered into force in 2006, and the United States signed it in 1998 but has not ratified it. However, the United States already implements most provisions of the London Protocol through the Marine Protection, Research, and Sanctuaries Act.
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The London Protocol amended the London Convention in 2006
The United States signed the Convention on the Prevention of Marine Pollution by Dumping Wastes and Other Matter, commonly known as the London Convention, on 29 April 1974. It entered into force on 30 August 1975.
The London Convention is an international treaty that provides a framework for countries to protect and preserve oceans from pollution caused by the dumping of wastes and other matter into the ocean. It addresses the deliberate disposal of wastes from vessels, aircraft, platforms, and other man-made structures at sea, as well as the disposal of these structures themselves.
In 1996, the Contracting Parties to the London Convention began negotiating a new treaty, known as the London Protocol, to modernize and eventually replace the London Convention. The London Protocol was introduced to prohibit all dumping except for the substances on the so-called reverse list. It was agreed to by the International Maritime Organisation (IMO) and entered into force in 2006.
The London Protocol is significant for carbon dioxide removal, as it provides the international legal basis for sub-seabed geological storage of CO2 and transboundary CO2 transport in international marine environments. It also regulates marine geoengineering, including ocean fertilisation.
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The US signed the London Protocol in 1998 but didn't ratify it
The United States signed the London Protocol in 1998 but did not ratify the treaty. The London Protocol is a 1996 amendment to the 1972 Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter, also known as the London Convention. The London Convention was one of the first international agreements to protect the marine environment from human activities, particularly the disposal of wastes and other matter from vessels, aircraft, platforms, and other man-made structures at sea.
The London Protocol aimed to modernize and eventually replace the London Convention. It entered into force in 2006, and as of September 2024, there are 54 Contracting Parties. While the United States is not a Contracting Party to the London Protocol, it has implemented most of its provisions through the Marine Protection, Research, and Sanctuaries Act. By doing so, the United States has actively contributed to reducing and preventing pollution caused by ocean dumping.
The London Convention and the London Protocol are international treaties that provide an international standard and framework for countries to protect and preserve the oceans from pollution caused by waste dumping. Effective implementation of these treaties helps preserve biological diversity, improve fisheries, and promote better waste management strategies.
The London Convention entered into force on August 30, 1975, and has been ratified by 87 Contracting Parties as of September 2024. The United States ratified the London Convention on April 29, 1974, and continues to be a Contracting Party. This convention requires Contracting Parties to issue permits for waste dumping at sea and prohibits the dumping of certain hazardous materials.
In summary, while the United States signed the London Protocol in 1998, it has not ratified the treaty. However, through the implementation of the London Convention and its own domestic legislation, the United States actively contributes to the prevention of marine pollution caused by ocean dumping.
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The US implements London Protocol provisions through the Marine Protection Act
The United States signed the Convention on the Prevention of Marine Pollution by Dumping Wastes and Other Matter, also known as the London Convention, in 1972. It was one of the first international agreements for the protection of the marine environment from human activities, particularly the uncontrolled disposal of wastes into the ocean. The London Convention entered into force on 30 August 1975, and the US ratified it on 29 April 1974.
In the same year that the US ratified the London Convention, the US Congress passed the Marine Protection, Research and Sanctuaries Act (MPRSA), also known as the Ocean Dumping Act, to implement the requirements of the London Convention in the United States. The MPRSA has been pivotal in preventing harmful materials from entering the oceans and protecting ocean and coastal resources.
The MPRSA contains permitting and enforcement provisions for regulating the disposition of materials into the ocean. The US Environmental Protection Agency (EPA), the US Army Corps of Engineers, and the US Coast Guard work together to implement Title I of the MPRSA. The EPA has primary authority for regulating the disposition of all materials into the ocean except for dredged material, which is jointly regulated by the EPA and the US Army Corps of Engineers. The US Coast Guard supports the implementation of the MPRSA by surveilling activities permitted under the Act.
In 1996, Contracting Parties to the London Convention concluded negotiations toward a new, free-standing treaty, referred to as the London Protocol, to modernize and eventually replace the London Convention. The London Protocol entered into force in 2006. The US signed the London Protocol in 1998 but has not ratified it. Despite not ratifying the London Protocol, the US implements most of its provisions through the MPRSA.
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The London Convention has 87 contracting parties
The London Convention, also known as the Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter, is an international treaty that entered into force on 30 August 1975. It was one of the first international agreements for the protection of the marine environment from human activities. The London Convention addresses the deliberate disposal of wastes or other matter from vessels, aircraft, platforms, and other man-made structures at sea, as well as the deliberate disposal of those objects themselves.
As of September 2024, there are 87 Contracting Parties to the London Convention. The United States is one of them, having ratified the treaty on 29 April 1974. The London Convention is implemented in the United States through Title I of the Marine Protection, Research, and Sanctuaries Act (MPRSA), which directs that implementing regulations apply the binding requirements of the London Convention to the extent that this would not relax the MPRSA.
The London Convention has been successful in providing a framework for international control and prevention of marine pollution. Some of its milestones include the 1993 ban on ocean disposal of low-level radioactive wastes and resolutions to end the dumping and incineration of industrial wastes.
In 1996, the Contracting Parties to the London Convention concluded negotiations toward a new treaty, known as the London Protocol, to modernize and eventually replace the London Convention. The London Protocol entered into force in 2006, and as of September 2024, there are 54 Contracting Parties. The United States is not a Contracting Party to the London Protocol, but it implements most of its provisions through the MPRSA.
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Frequently asked questions
The US signed the Marine Pollution Treaty, also known as the London Convention, on April 29, 1974.
The London Convention entered into force on August 30, 1975.
The purpose of the London Convention is to control all sources of marine pollution and prevent pollution of the sea through the regulation of dumping waste materials into the sea.
The London Protocol is a treaty negotiated in 1996 to modernize and eventually replace the London Convention.
No, the US is not a party to the London Protocol. However, the US implements most provisions of the London Protocol through the Marine Protection, Research and Sanctuaries Act.






















