NOSONEK sea water comes from the Bay of Cancale in Brittany, renowned for the quality of its waters. This bay is characterized by high tides (up to 12 m) and strong currents that prevent water pollution. Thanks to this unique specificity, the water is constantly purified and remains clean. Samples are taken automatically at optimal water quality (2 hours, 1 hour before and 0.5 hours after the runoff period).