Waterleau has designed and built the municipal wastewater treatment plant of the city of Fes, Morocco’s third largest city with a population of 1,3 million.
Waterleau is also responsible for the operation and maintenance of the plant for a period of 10 years. The plant reduces 85 % of the pollution of the river Sebou, treating 120.000 m³ of sewage water per day or 40 million m³ annually. Half of the plants energy requirements come from biogas, provided from digestion of the sludge, an important by-product of the biological wastewater treatment process. Daily, 28.800 m³ of methane is produced providing 2.75 million Kwh per year! The plant allows a considerable reduction of greenhouses: the treatment process allows a reduction of 103.000 tons of CO2 per year.