While all state legislations allow for trading only a few have experienced any trade. Temporary trades have taken place in Queensland and Western Australia, but most have occurred in New South Wales, endowed with large alluvial aquifers, a large number of license, and significant water scarcity constraints (Casey and Nelson, 2012). Trading occurs via individual arrangements between entitlement holders. Irrigated land buyout is found in Korea and three of the four regions in the United States (NHPA, SHPA, and MPW regions).12 In Australia's Murray-Darling Basin, third parties are allowed to purchase entitlements in areas where total allocation exceeds what is deemed as a sustainable limit. In the Slovak Republic, land owners must pay charges to use agricultural land for non-agricultural purposes, and these charges are higher for irrigated land. In some countries, cities have bought irrigated lands to ensure groundwater quality (OECD, 2015b).