An Atlantic salmon measuring nearly one metre in length and weighing seven kilos has been caught at the Suresnes barrage on the Seine, just west of Paris. Being particularly sensitive to pollution, the Atlantic salmon is a reliable “environmental-indicator” confirming the progressive improvement in the quality of the river water since the SIAAP water purification plants began operating 25 years ago. Now 32 different species of fish can be found in the Seine compared to just three in 1970. However this is the first Atlantic salmon to be caught in the last 70 years.

The SIAAP publishes a daily bulletin on its website with information about pollution levels in the Seine.

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