The Conference will be organized by the joint efforts of two IWA Specialist Groups: on Design, Operation and Maintenance of Drinking Water Treatment Plants and on Design, Operation and Economics of Large Wastewater Treatment Plants.The conference will focus on the topics covering knowledge and achievements in design, operation, cost and economics of wastewater and drinking water treatment plants, also in treatment processes, conventional and advanced technologies of this sphere.Specialists from research, design and academic organizations utilities, enterprises of water-sewage facilities, technology designers and equipment manufacturers will take part in the event.The Conference Secretariat encourages potential authors to submit a paper and to come to Moscow to attend the Conference. Conference registration fee: IWA members 350/400 EUR, non-members 450/500 EUR.Expected number of attendees is 250-300 Russian and International delegates.Important Dates· 1 December, 2009