IWA recently published an overview of Microbiological Sensors for the Drinking Water Industry. microLAN together with CETaqua and Aguas de Barcelona wrote Chapter 10 of this book: Safety and quality control in drinking water systems by online monitoring of enzymatic activity of faecal indicators and total bacteria. This can now be bought from the website: https://iwaponline.com/ebooks/book/732/chapter/1373279/Safety-and-quality-control-in-drinking-