Ondo State's Bitumen Seepages Pose Severe Environmental and Socio-Economic Threats
A recent study by the Nigerian Environmental Study Action Team (NEST) has uncovered alarming environmental and socio-economic challenges in Ondo State, Nigeria, due to surface-level bitumen seepages. Conducted by researcher Victoria Sasere, the report highlights that these seepages, which have expanded over the past three decades, are releasing heavy metals and toxic compounds into soil and water at concentrations exceeding national safety limits. This situation is creating a clear case of environmental injustice, with host communities facing degraded water resources, declining crop yields, and persistently low incomes.
Widespread Contamination and Health Risks
The research confirms the presence of bitumen across six blocks in local government areas such as Odigbo, Irele, and Okitipupa, with communities like Ode-Irele and Agbabu extensively studied. Scientific evidence indicates that uncontrolled geogenic seepage and exploratory soil disturbance have led to a multidimensional crisis. Residents relying on wells and streams for drinking water are exposed to heightened health risks from toxic elements like lead and arsenic. Local farmers report reduced crop yields due to bitumen-impregnated soil, which diminishes fertility and water retention. Additionally, heavy metals are accumulating in edible plants, creating dietary exposure pathways for the population.
Water bodies near affected areas often develop films of bitumen after rainfall, which suppress oxygen exchange, reduce aquatic life, and impair the natural self-purification capacity of streams. This degradation of water resources further compounds the environmental harm, making it difficult for communities to access safe water for daily use.
Socio-Economic Marginalisation Amid Resource Wealth
Despite Ondo State's vast bitumen deposits, among the largest in the world, host communities have seen little economic benefit. Surveys reveal that many residents live on less than a third of the World Bank's international extreme poverty threshold of $2.15 per day. A comprehensive socio-economic study across nine communities found a mean daily income of approximately $0.67 (N1,139), highlighting a stark contrast between resource wealth and local poverty. The study attributes this gap to regulatory weaknesses, minimal engagement by mining companies, and the exclusion of local populations from revenue generated by bitumen exploration.
Statistical analysis confirms a significant negative association between bitumen exploration activities and community well-being, implying that exploration has not yielded positive livelihood outcomes. This pattern mirrors broader trends in Nigeria, where oil resources have failed to translate into broad-based economic development, with over 70% of the population living below the poverty line and 90% of oil revenue historically accruing to just 1% of the population.
Urgent Calls for Evidence-Based Interventions
Victoria Sasere warned that without prompt intervention, the combination of expanding surface seepages, contaminated water, and limited livelihood options could entrench cycles of poverty and environmental harm in Ondo State. She emphasised the need for urgent, evidence-based interventions, including stronger regulations, mandatory environmental impact assessments, community consultation, and remediation measures. "The bitumen belt represents enormous potential, but current practices are creating an obvious case of environmental injustice," Sasere stated.
The researcher urged coordinated action to regulate bitumen exploration, remediate contaminated land and water, and involve local communities in decision-making. Failure to act risks deepening poverty and environmental damage while leaving Ondo State's vast natural resources largely untapped for sustainable development. The study serves as a critical reminder of the paradox often seen in resource-rich areas: abundant wealth existing alongside socio-economic marginalisation and environmental degradation.
