At the request of the Federal Republic of Nigeria, UNEP has conducted an independent assessment of the environment and public health impacts of oil contamination in Ogoniland, in the Niger Delta, and options for remediation.
In 49 cases, hydrocarbons observed in soil at depths of at least 5 m
Ogoni community input was vital and over 23,000 attended project meetings
Over 4,000 samples collected for analysis from more than 200 sites
Two-year UNEP scientific study including 14-months of fieldwork
5 highest concentrations of TPH in groundwater exceed 1 million micrograms per litre (Nigerian standard: 600 µg/l)
67 fact sheets providing data from detailed land and groundwater investigations
View the Fact Sheets