Cantabria's water supply

Cantabria's water supply

Cantabria's water supply is a facility designed to meet the water supply needs of the Autonomous Community of Cantabria during periods of stowage, when the resources of the Cantabrian basins are not sufficient to meet the regional consumption water needs.

The system uses, as a source of resources, the flows from the Besaya basin, whose surpluses are stored in the Ebro Reservoir, through a transport operation to the Ebro basin that uses several catches, pumping stations and drives operating in the North-South direction. The hydraulic infrastructure has a filtration plant with a treatment capacity of 17.000 m3/h.

During the stowage the system captures the resources previously stored in the Ebro Reservoir and transports them south-north direction. A priori, the system is considered to operate in the sense of South-North supply for three months a year; July, August and September or August, September and October according to the weather conditions of each year.


Treated volume (Hm3/year)

4 years

Contract period


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