Professor Bill Sloan FRSE, Glasgow University presenting on Water Treatment Technologies • Bill’s presentation discussed: the roots of the urban water cycle; the importance of the Loch Katrine supply stream, the introduction of the Trunk sewer system into Glasgow; the establishment of (unsustainable) centralised water treatment and wastewater treatment centres; the energy intensive nature of Scottish Water’s activity; the need to fuel technologies via green energy sources; the negative impacts on rural communities; biological treatment as a low-energy solution; installing enhanced biological wastewater treatment solutions on Scottish islands; the challenges posed by Scotland’s rural demographic.