[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

[Algae in the dam reservoirs used for drinking-water production in Morocco]

As part of the study of water quality of dam reservoirs used for drinking-water production, the Water Quality Laboratory of the National Office for Drinking Water in Morocco prepared a micrographic atlas of the main species of planktonic algae found in 22 reservoirs over a period of 25 years. The atlas includes 321 micrographs representing 156 taxons with an indication of the sample location and an enlargement ratio for each micrograph. In some cases, information is also provided on algae associations, algal counts and monthly occurrence