Figure 3
From: Distribution of inorganic compositions of Japanese tap water: a nationwide survey in 2019–2024
Distribution of major components in Japanese tap water based on increasing the prefecture average (for the prefecture location, see Fig. S1). Boxes show the interquartile range, with thick lines at median values. Whiskers represent the nonoutlying extraquartile range. Outliers are shown as circles (near outliers) or asterisks (far outliers). Black dashed lines indicate the median of tap water collected worldwide (n = 194). Dashed blue lines indicate the median of Japanese tap water samples (n = 1564).
