This also applies at the farm level, where a farmer has to consider the management of the whole farm operation and not just those elements of the business important to water quality. Illustrative is the importance of stormwater management in helping to minimise nutrient and sediment loads from agriculture (Randhir and Tsvetkova, 2009). A further example is the reuse of irrigation water further down stream in a water catchment and the recycling of urban/industrial wastewater in agriculture, which raises both human health and environmental concerns, as recently illustrated by the growing use of recycled effluent water in Israeli agriculture (Box 1.2).