Environmental law is the body of legal principles, regulations, and institutions designed to protect the environment, manage natural resources, and regulate human activities that affect ecological systems.
Essentially, environmental law seeks to balance economic development with ecological integrity, ensuring that present and future generations can rely on clean air, safe water, stable climates, and sustainable ecosystems.
Environmental law governs how societies interact with the natural world. It includes statutes, regulations, treaties, administrative rules, and judicial decisions that address pollution, land use, biodiversity, climate change, and resource management.
Its scope ranges from pollution control to resource sustainability, from environmental impact assessment to climate governance.
Environmental law is a relatively young field. Its development can be traced through several phases.
Before modern environmental law existed, societies relied on nuisance law, property rights, and local ordinances to address pollution or resource conflicts. These were reactive, narrow, and focused on private harms rather than ecological protection.
Industrial growth in the late 19th to mid 20th century brought severe air and water pollution. Events like the 1948 Donora smog and the burning of the Cuyahoga River highlighted the need for systematic regulation. Scientific advances also revealed the fragility of ecosystems.
The environmental movement of the 1960s and 1970s marked the birth of environmental law as a recognized field. Influential works like Rachel Carson's Silent Spring catalyzed public concern. Governments responded with sweeping legislation: the U.S. Clean Air Act of 1970, the Clean Water Act of 1972, the Endangered Species Act of 1973, and the creation of the Environmental Protection Agency (EPA). Globally, the 1972 Stockholm Conference established environmental protection as an international priority.
Between the 1980s and the 2000s, environmental law expanded beyond pollution control to address climate change, biodiversity loss, and transboundary harms. The 1987 Brundtland Report introduced the concept of sustainable development, and the 1992 Rio Earth Summit produced foundational treaties like the UN Framework Convention on Climate Change.
Environmental law now encompasses climate mitigation, renewable energy regulation, environmental justice, and corporate sustainability, integrating economics, science, and international cooperation.
Environmental law is guided by several foundational principles: precautionary principle (when environmental harm is uncertain but potentially serious, regulators should act to prevent it), polluter pays principle (those who cause pollution should bear the costs of managing it), sustainable development (development must meet present needs without compromising future generations), intergenerational equity (future generations have rights to environmental quality), and environmental justice (environmental burdens and benefits must be distributed fairly across communities). These principles shape legislation, judicial reasoning, and international agreements.
Pollution control is one of the earliest and most developed areas of environmental law. It includes air quality standards, water pollution limits, hazardous waste management, chemical regulation, and noise and radiation controls. Regulatory frameworks often combine command-and-control rules, market-based mechanisms, and technology standards.
Environmental law also governs how societies use natural resources such as forests, fisheries, minerals, and water. Sustainability frameworks emphasize conservation, renewable resource management, ecosystem-based approaches, land-use planning, and climate-resilient resource strategies. International treaties such as the Convention on Biological Diversity and domestic laws such as the National Environmental Policy Act (NEPA) embed sustainability in decision-making.
Environmental law operates through a complex institutional network that includes administrative agencies, such as the EPA, which create and enforce regulations; courts, which interpret statutes, resolve disputes, and develop doctrines like standing and judicial review; international bodies that negotiate treaties and monitor compliance; and private actors (corporations, NGOs, and citizens) which shape environmental governance through litigation, advocacy, and voluntary standards.
As an accepted field of law, several lawyers and law firms specialize in environmental law.
Recommended Resources
Based in Washington, D.C., B&D is one of the major U.S. firms specializing exclusively in environmental law. Positioning itself as "The Environmental Law Firm," B&D is a private-sector environmental regulatory specialist with a national reach. Its site highlights its practice areas, attorney profiles, and resources related to environmental regulation, litigation, and compliance, as well as its emerging focus areas, all related to environmental law. Contacts are included.
https://www.bdlaw.com/
Canadian Environmental Law Association
Founded in 1970, CELA is one of Canada's oldest public-interest environmental law organizations. It operates as a specialty legal aid clinic funded by Legal Aid Ontario, providing free environmental justice legal services to low-income and vulnerable communities across Ontario. Based in Toronto, it has a dual mandate: legal representation for individuals and communities facing environmental harm, often in tribunals, boards, and courts, and law reform and public education.
https://cela.ca/
Center for Environmental Ethics and Law, The
The CEEL is a US-based not-for-profit organization dedicated to advancing environmental ethics as a foundation for law, policy, and governance. CEEL positions itself as an independent, ethics-driven institution working across sectors, including law, policy, human rights, biodiversity conservation, and community governance. It emphasizes ethical engagement as a practical tool for conservation and justice, nonviolence, democratic rule of law, anti-racism, and humanitarian principles.
https://environmentalethicsandlaw.org/
Center for International Environmental Law
Founded in 1989, CIEL is headquartered in Washington, D.C., with a Geneva office that uses international law to protect the environment and defend human rights. The organization uses legal strategies to confront environmental harm, corporate misconduct, and human rights violations. Its core mission and values, as documented on its site, include environmental democracy, accountability, equity and justice, collaboration, and transformative change. Other program areas are defined.
https://www.ciel.org/
Founded in 1971, Earthjustice is the premier nonprofit environmental law organization in the United States, essentially the closest thing in the world to a dedicated public-interest law firm. Earthjustice uses litigation, policy advocacy, and partnerships to protect ecosystems, public health, wildlife, and climate stability. It has 15 offices and provides free legal representation to public-interest clients: tribal nations, community groups, conservation organizations, and frontline communities.
https://earthjustice.org/
Emmett Environmental Law Center
EELP is Harvard Law School's flagship hub for environmental, climate, natural resources, and energy law, combining a research program, a full clinical practice, and cross-university collaborations. The Center focuses on durable legal strategies for climate, energy, natural resources, and environmental justice. It trains students, convenes multi-party policy discussions, produces legal analysis, and participates in rulemakings and litigation. Contact details are provided on the site.
https://environment.law.harvard.edu/
Environmental & Energy Law Program
The EELP at Harvard Law School features deeply technical legal analysis, meticulous regulatory tracking, and a steady stream of scholarship aimed at defining U.S. climate and energy governance. EELP is a research and policy program within Harvard Law School focused on environmental regulation, climate governance, and clean energy law. Its work includes administrative law, statutory interpretation, regulatory tracking, and litigation analysis. Its research areas are defined.
https://eelp.law.harvard.edu/
Environmental Law Centre Alberta
The Alberta ELC is a non-profit legal organization founded in 1982 and dedicated to improving environmental governance, advancing environmental rights, and providing clear, accessible legal analysis for Albertans. It focuses on legal research, policy evaluation, law reform, and public legal education. Information on how cases are selected for its ELC Clinic is provided, along with an application; an application for the ELC Associates program is also included.
https://elc.ab.ca/
Environmental Law Centre British Columbia
Affiliated with the University of Victoria (UVic), the ELC is a student-powered public-interest law clinic housed within UVic's Faculty of Law that produces legal research, law reform submissions, and advocacy work for environmental and Indigenous organizations across British Columbia and Canada. It is clinic-based, not a standalone NGO. Students work under the supervision of experienced environmental lawyers, and it is known for producing high-impact legal reports.
https://envirolawcentre.ca/
Based in Aotearoa, New Zealand, ELI is a public-interest environmental law organization that uses litigation, legal research, and statutory accountability mechanisms to protect the country's natural taonga. It is a distinct New Zealand-based charitable trust founded in 2019, with a small team of lawyers and researchers focused on ensuring that New Zealand's existing environmental laws are properly implemented, enforced, and not undermined. Cases and contacts are featured.
https://www.eli.org.nz/
National Environmental Law Center
Founded in 1990 to enforce anti-pollution laws when government agencies fail to act, NELC is a non-profit litigation center that partners with state and local groups to bring Clean Air Act, Clean Water Act, hazardous waste, and species-protection cases against corporate polluters. Headquartered in Boston, Massachusetts, the NELC litigates across the United States, but always with local plaintiffs. Its work is highlighted on its website, along with ways in which others can get involved.
https://www.nelc.org/
Headquartered in San Francisco, California, the environmental litigation firm is known for high-impact cases against major polluters, especially fossil fuel companies. Founded in 2016, the firm focuses on representing states, cities, counties, tribes, and public water providers in lawsuits involving climate deception, drinking water contamination, and natural resource protection. Its firm, team, practice areas, results, and contacts are highlighted on its website.
https://www.sheredling.com/
Southern Environmental Law Center
The SELC is one of the most influential environmental legal organizations in the United States. It is positioned as the South's largest environmental legal advocate, operating across six states and Washington, D.C., with more than 160 legal and policy experts, focused on clean air, clean water, climate, land, wildlife, and environmental justice. The SELC is a non-profit, non-partisan environmental law organization headquartered in Charlottesville, Virginia.
https://www.selc.org/
Western Environmental Law Center
WELC is a public-interest environmental law organization that uses litigation, policy advocacy, and community partnerships to defend the ecological integrity of the American West. The group focuses on wildlands, wildlife, and climate, operating from offices across Oregon, Washington, New Mexico, Montana, and Colorado. It provides free legal representation to conservation groups, relying on charitable donations rather than client fees. Its work, publications, and contacts are posted.
https://westernlaw.org/
Yale Center for Environmental Law & Policy
YCELP is structurally distinct from the litigation-forward NGOs and from purely academic research centers. A joint initiative of Yale Law School and the Yale School of the Environment, YCELP advances analytically rigorous approaches to environmental decision-making across disciplines and sectors. It is a campus-wide hub for collaboration on environmental law and policy, connecting students, faculty, and external stakeholders. Its core program areas are defined on its website.
https://envirocenter.yale.edu/
