Rural Africa Water Development Project (RAWDP), a Nigerian NGO, is currently promoting the Mor-sand filter in the restive oil rich Niger Delta region. The Mor-sand Filter, an improved adaptation of the slow-sand filter, integrates the combination of coagulation and filtration as effective processes for the reduction of the concentration of microorganisms in water.
In the early 1990s, I was on the Editorial Board of the leading newspaper of record in Lagos, Nigeria until I left for the UK. It was called The Guardian; and it is still there. I had been in the Nigerian media for a while and to be invited to join the Editorial Board of The Guardian in those days was regarded as an achievement. So I was pretty happy with myself.