Estimated Per Capita Water Ingestion in the United States. Based on Data Collected by the United States Department of Agriculture's 1994-96 Continuing Survey of Food Intakes by Individuals.

摘要

This report presents current estimates of per capita water ingestion. The basis for these estimates is dietary and demographic data collected during a 1994 through 1996 survey conducted by the United States Department of Agriculture (USDA). In this survey, known as the Continuing Survey of Food Intakes by Individuals (SCFII), two non-consecutive days of food ingestion data were collected from a sample of more than 15,000 individuals in the 50 United States and the District of Columbia. Respondent information, in conjunction with food code, recipe, and nutrient data from USDA, forms the means of estimating per capita ingestion of plain drinking water (direct water) and water ingested indirectly. Water used in the final preparation of foods and beverages at home, or by food service establishments such as school cafeterias and restaurants is defined as indirect water. Quantities of ingested water reported in the USDA 1994 through 1996 CSFII are averaged by participant to generate a two-day average. These daily average ingestion amounts comprise the empirical distributions from which mean and upper percentile per capita ingestion estimates are produced. The CSFII survey, and consequently estimates reported in this document extend to the population of the United States. We augment population per capita ingestion estimates with estimates of per capita ingestion by various population subsets. These population subsets include (1) gender and age categories and (2) pregnant, lactating, and childbearing-age women. Subpopulation ingestion estimates support assessments of 'at risk' populations.