Climate change is expected to cause water scarcity and extreme rain events in the Crimea. An increase in the average temperature will lead to higher water losses through evaporation in combination with a higher demand for water. In Simferopol the optimal allocation of limited surface water resources and management of water quali-ty and water quantity under competitive demand situations will be tested and demonstrated. Extreme rain events will result in higher risks associated with flooding and impacts on the water and wastewater infrastructure. Instruments for risk evaluation and prediction under various climate change scenarios will be demonstrated. The expected benefits are improved water supply during drought periods, financial savings and sustainable water use through more efficient operational procedures.