Evaluating the Efficacy of Environmental Impact Assessment in Conserving Environment and Sustainable Development in India: A Critical Legal and Policy Analysis

Environmental Impact Assessment (EIA) has emerged as a pivotal instrument for integrating environmental considerations into development planning in India. Instituted under the Environment (Protection) Act, 1986 and operationalized through the EIA Notifications of 1994 and 2006, the framework is intended to ensure that potential ecological and social impacts of projects are assessed prior to approval. This paper critically examines the evolution, legal foundations, institutional mechanisms, and practical efficacy of EIA in promoting sustainable development in India. Through doctrinal analysis and case studies—including the Narmada Bachao Andolan, Sterlite Copper plant, POSCO Odisha project, and Delhi Metro expansion—the research highlights how judicial interventions and regulatory oversight have shaped the preventive and participatory dimensions of EIA. Despite its formalization, the EIA process faces significant challenges that undermine its effectiveness. These include procedural inefficiencies, limited technical capacity of state-level authorities, weak enforcement of post-clearance compliance, inadequate public participation, and political-economic pressures that often compromise environmental safeguards. The paper also analyses the controversial Draft EIA Notification, 2020, which proposed retrospective clearances and reduced stakeholder consultation, illustrating the tension between development imperatives and environmental protection. The study concludes that while EIA has contributed to integrating environmental accountability into India’s development agenda, its potential remains constrained by systemic gaps. Strengthening institutional capacity, ensuring transparency, enforcing compliance rigorously, incorporating independent third-party review, and codifying judicial principles such as the precautionary approach, polluter pays, and intergenerational equity are essential for enhancing efficacy. By addressing these challenges, EIA can serve as a robust tool to reconcile economic growth with environmental sustainability and social equity, aligning India’s development trajectory with global standards of sustainable development.