Drinking water and wastewater treatment are according to many active in the industry currently the largest markets for membrane technology. Though still in the minority in the filtration and separation industry in general, the success stories of membrane use in those areas are starting to arouse interest in a range of other industries. Filtration+separation will endeavor to keep track of these developments in the coming year. This month＇s issue though broadly focuses on some interesting areas of membrane use in wastewater and drinking water applications.