[Pollution by wastewater for olive oil mills and drinking-water production. Case study of River Sebou in Morocco]

The National Office for Drinking Water [ONEP], responsible for the drinking-water supply in Morocco, faces serious difficulties in producing water of good quality at a reasonable price from the River Sebou waters. The ONEP's three water treatment plants have been disrupted or even stopped due to the poor quality of waters received. The main source of pollution is the urban and industrial waste of the town of Fes, compounded by episodic pollution caused by the olive oil mills of Fes and its surrounding area. The ONEP study shows that the additional production costs incurred as a result of the pollution by wastewater from olive oil mills far exceeds the drinking-water rates charged in the study area