Radioactive fallout in surface water sources - Interim report 2 : Private surface water in food chain

This report is the second interim report within the project "Radioactive fallout in surface water. Municipal water works using surface water, water treatment processes and how these can affect the concentration of radionuclides in drinking water after radioactive fallout was examined in the first interim report [Nygren 2015]. The purpose of this report was to examine the water amount supplied to the food chain from private surface water sources, i.e. water that does not undergo the regular municipal water treatment processes, but which could affect public exposure from radioactive fallout. Water supply to the food chain from private surface water sources originates from three categories: households, industry and agriculture. ? Private water in household orginates mostly from groundwater sources, and the amount from surface water sources are negligible in this context. ? The food industry uses approximately 10.3 million m3 water from private surface water sources every year. ? The agriculture uses more than 74 million m3 water per year from surface water sources for food production (i.e. water that is used for crops and animals). About 85 million m3 of water from private surface waters are annually used for the food chain.