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lality, can be achieved with a wide range of total water intakes (e.g., first through 99th percentile of total water intake) (Appendix Table G-1). Therefore, the AI for total water is set based on the median total water intake using data from NHANES III (Appendix Table D-1) and rounding to the nearest 0.1 L.

Based on these data, the median total water intake for children 1 to 3 years of age was 1.3 L/day, children 4 to 8 years was 1.7 L/day, boys 9 to 13 years was 2.4 L/day, boys 14 to 18 years was 3.3 L/day, girls 9 to 13 years was 2.1 L/day, and girls 14 to 18 years was 2.3 L/ day.

The percent of total water that was consumed from foods was 29 percent for ages 1 to 3 years (0.38 L/day), 29 percent for ages 4 to 8 years (0.51 L/day), 24 percent for boys 9 to 13 years (0.58 L/day), 20 percent for boys 14 to 18 years (0.67 L/day), 24 percent for girls 9 to 13 years (0.52 L/day), and 20 percent for girls 14 to 18 years (0.46 L/day) (derived from Appendix Table D-1 and D-4, by dividing the median in Table D-4 by the median in Table D-1).

Total Water AI Summary, Ages 1 Through 18 Years

AI for Children

1–3 years

1.3 L/day of total water. This includes approximately 0.9 L (4 cups) as total beverages, including drinking water.5

4–8 years

1.7 L/day of total water. This includes approximately 1.2 L (5 cups) as total beverages, including drinking water.

AI for Boys

9–13 years

2.4 L/day of total water. This includes approximately 1.8 L (8 cups) as total beverages, including drinking water.

14–18 years

3.3 L/day of total water. This includes approximately 2.6 L (11 cups) as total beverages, including drinking water.

AI for Girls

9–13 years

2.1 L/day of total water. This includes approximately 1.6 L (7 cups) as total beverages, including drinking water.

5  

Conversion factors: 1 L = 33.8 fluid oz; 1 L = 1.06 qt; 1 cup = 8 fluid oz.



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