The Effectiveness of Environmental Impact Assessment (EIA) Laws in Developing Countries: Case Studies from Sierra Leone, Nigeria, and Indonesia

Environmental degradation presents a persistent obstacle to sustainable development, with its impact being particularly acute in developing nations. Environmental Impact Assessment (EIA) statutes are intended to avert irreparable ecological harm by mandating pre-emptive evaluation of development project impacts. Nonetheless, these statutes frequently underperform in the Global South due to issues such as weak enforcement, entrenched political corruption, limited technical expertise, and inadequate public participation mechanisms within governance. This research conducts a qualitative comparative analysis of EIA legal frameworks in Sierra Leone, Nigeria, and Indonesia, utilizing literature review and case law analysis grounded in legal interpretation and administrative decision records. The study examines whether these legal regimes are genuinely as safeguards or merely as nominal compliance tools. Results reveal that although statutory provisions for EIA exist, implementation is systematically undermined by pervasive corruption, constrained financial allocations, and insufficient environmental literacy. International best practices are reviewed to advance targeted recommendations for optimizing EIA efficacy through robust legal and institutional reforms. The analysis contributes to ongoing discourse in global environmental governance, advocating for recalibrated legal instruments that substantively advance environmental justice and sustainable development objectives.