a water recreation zone, a waterfall course leading to a storm reservoir

Storm basin intended to retain the pollution of the first waters during periods of heavy rain.

A storm management basin for the temporary storage of runoff water to protect homes and structures during periods of heavy rain.

Example of implementation of a 300 m3 chamber to replace an open-air storm basin at the centre of a town site, which was considered unsafe, unsightly and was causing nuisances (mosquitoes, unpleasant odours).

The sum capacity of such a city's cisterns (capacity of 160 litres per m² of roof area) represents a storage capacity equivalent to a colossal stormwater basin.

To prevent siltation in the flooding basin – and thus a reduced long-term storage capacity – a sediment pond was created at the weir.

From the storm-water basin to the wastewater treatment plant, from the pumping of water to its sanitisation, from the water purification station to the computerised quality control system – follow the circuit of water treatment.