The employees of Membratec SA, in Sierre (VS),
and ALPHA WasserTechnik AG, in Nidau (BE), both part of Membratec Groupe SA,
gathered for a convivial day, under the Valais sun. This meeting was a good opportunity
to get to know each other better, to discover the activities related to the
production of drinking water in Sierre and to visit the Martigny WWTP and its
different stages of wastewater treatment.