Urban Water Management: Science Technology and Service Delivery : Proceedings of the NATO Advanced Research Workshop on Urban Water Management: Science Technology and Service Delivery Borovetz, Bulgaria 16-20 October 2002

Urban population growth dramatically alters material and energy fluxes in the affected areas, with concomitant changes in landscape, altered fluxes of water, sediment, chemicals and pathogens and increased releases of waste heat. These changes then impact on urban ecosystems, including water resources and result in their degradation. Such circumstances make the provision of water services to urban populations even more challenging. Changing weather patterns, rising temperature and large variations in precipitation contr- ute to increased damages, caused by weather related disasters, including floods. Ones of the major contributors to increasing flood peaks are land use changes and particularl- urban development. Consequently, there is a need to look for low environmental impact land development and to manage runoff in urban areas by storm water management. Much progress in the management of urban waters has been achieved in the most - vanced jurisdictions, but much more remains to be done. In this respect the EC Water Framework Directive can provide some guidance. Urban water management issues are particularly important in the countries in transition in Central and Eastern Europe. During the last decade political, economical and social changes in the countries under transition have influenced almost every element of the public sector, including water services. There is an urgent need for exchange of information among various countries on this issue and for identification of best approaches to achieving this transition. Front Matter....Pages i-xvii Overview of Urban Stormwater Impacts on Receiving Waters....Pages 1-10 Municipal Wastewater Treatment Policy Referring to EU Guidelines and its Impact on Receiving Waters from Rivers to the Receiving Seas....Pages 11-28 DSS Tools Applied for the Best Strategy for Investment in Water and Environment in CEE Countries — Key Elements for Future Support for Applications of Structural Funds of EU....Pages 29-44 Documented Impacts of Urban Effluents on Water Resources in the Czech Republic....Pages 45-52 Problem of Groundwater Contamination from Suburban Waste Disposal....Pages 53-58 Urban Drainage Water and Storm Water Management....Pages 59-61 Examples of Urban Drainage Master Plans — Prague Case Study....Pages 63-72 Surface Runoff Modelling in Steep Terrain in a GIS Environment....Pages 73-84 Quality Assurance in Model Based Water Management....Pages 85-94 Quantity and Quality Data from a Stormwater Catchment in Italy....Pages 95-104 Reduction of Flood Damages in Urban Areas of Canada....Pages 105-114 The Catastrophic Flood in Gdansk on July 2001....Pages 115-124 Risk of Flood Stage Exceedance Upstream from a Bridge....Pages 125-133 An Approach for Runoff Computation Using Three Data Mining Techniques....Pages 135-148 Transformation of the Water Supplying Sector in the Countries of Central Europe....Pages 149-155 Impact of Hydraulic Conditions on the Water Quality in the Distribution Network....Pages 157-161 Requirements on the Water Supply Systems in Romania....Pages 163-167 Cost Effects of Different Calculation Methods on Water Distribution Systems....Pages 169-178 CSO: State of the Art Review....Pages 179-190 CSO Pollution Control Policies and Procedures in the UK....Pages 191-202 Optimal Wastewater System Storage Tank Volume to Meet Receiving Water Quality Standards....Pages 203-214 Wet-Weather Transient Impacts on Wastewater Treatment....Pages 215-222 Sizing of Wastewater Sludge Anaerobic Digesters....Pages 223-234 Low Lime Coagulation for the Enhancement of Primary Treatment of Urban Wastewater....Pages 235-244 Integrated Modelling of Urban Wastewater Systems....Pages 245-254 The Data Management for Master Planning Water Supply, Drainage and Waste Treatment....Pages 255-268 Study, Assessment and Problems of Management of Small Urban Reservoirs in Belarus....Pages 269-276 Water Protection of the Dyje River Basin....Pages 277-286 Lielupe River Basin Management Plan: Pollution Sources and Characteristics....Pages 287-294 Management and Developent Strategy for Water Supply and Sewerage in Bulgaria....Pages 295-305 Main Private-Sector Participation in Water Utilities: Risks and Possibilities for Their Reduction and Mitigation....Pages 307-318 Private Sector Participation in Water and Wastewater Management in Bulgaria. Sofia Case Study....Pages 319-328 Back Matter....Pages 329-330 Urban water management issues are particularly important in the countries in transition in Central and Eastern Europe. During the last decade, political, economic and social changes in these countries have influenced almost every element of the public sector, including water services. There is an urgent need for the various countries to exchange information on this issue and to identify the best approaches to achieve this transition. The book focuses on the acute problems in the field of Urban Water Management in Central and Eastern Europe countries in transition, giving a first-class illustration of the transfer of know-how from traditional NATO countries. The following issues are discussed: -Wastewater impacts on receiving waters and groundwater; -Urban drainage planning and management; -Urban flood protection and management; -Combined sewer overflow management and control; -Challenges to urban water supply; -Wastewater technologies and management; -Urban river catchment management - case studies; -Private sector participation in urban water services delivery - case studies; -Information technologies in urban water management - case studies (GIS, data management, etc.) Frequently reported degradation of urban waters indicates that discharges of urban stormwater may cause a variety of impacts in receiving waters [1]. Proceedings of the NATO Advanced Research Workshop, held in Borovetz, Bulgaria, 16-20 October 2002