A bright yellow sign above the well in this sleepy Nigerian village says ‘caution: not fit for use’, and the sulphurous stink off the water that children still pump into buckets sharply reinforces that warning.

“Can you smell it? Don’t get any in your mouth or you’ll be sick,” said Victoria Jiji, 55, as she walked past the bore hole in her home village of Ekpangbala, one of several in Ogoniland, southeast Nigeria, whose drinking water has turned toxic.

Prosperity has flowed from Ogoniland, one of Africa’s earliest crude oil producing areas, for decades. But it has flowed to the big oil companies and to Nigerian state coffers. Locals have long complained that precious little goes their way.

Read More: Reuters