Beyond these specific national approaches, issues that are common to many OECD countries are ageing infrastructures and the need to finance modernisation plans. These criticisms continue and have become even more important since environmental concerns have become a major issue world-wide. On the other hand, increases in water scarcity and extreme water events associated with the projected acceleration of the water cycle due to climate change may lead certain countries to re-examine the costs and benefits of their water storage policy strategies for adaptation purposes. A recent example is the drought in California, in which the development of alternative sources of water supply is discussed among the set of possible policy responses. Ensuring food security can also play an important in the overall political balance regarding water storage strategies.