engleski

Assessment of Flooding Impact on Water Supply Systems: A Comprehensive Approach Based on DSS

The assessment of food impact on a Water Supply System (WSS) requires a comprehensive approach including several scales of analysis and models and should be managed in the Water Safety Plans (WSP), as recommended in the EU Water Directive 2020/2184. Flooding can afect the quality of groundwater and surface water resources and can cause supply service interruption due to damaged infrastructures. A complete approach to address food impact on WSS is required but not yet available, while only specifc aspects were investigated in details. This work introduces a comprehensive tool named Water Safety Planning Procedures Decision Support System (WASPP–DSS) developed in the context of MUHA (Multihazard framework for Water Related risks management) project. The tool is mainly addressed to small water utilities (WU) for supporting WSP development and is based on two main premises: 1) a correct approach for WSS risk analysis requires a multi-hazard perspective encompassing all the system components and diferent hazards ; 2) other institutions in addition to WUs have to be involved in WSS risk analyses to harmonize monitoring and response procedures. The tool is here applied on risks associated to fooding and demonstrated for three case studies. The WASPP– SS, tested by eight WUs, was found potentially valid support for small WUs that must start drafting the WSP in a comprehensive way and can provide a common shared scheme. Improvements are desirable, as including a specifc section to consider the issue of loss of water resources from reservoirs due to overfow.

flood hazard, water supply system, Water safety plan, decision support system

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