Table 1 Distribution of lead concentration in tap water samples in Japan
Concentration (mg/kg) | ≤0.001 | ≤0.002 | ≤0.003 | ≤0.004 | ≤0.005 | ≤0.006 | ≤0.007 | ≤0.008 | ≤0.009 | ≤0.01 | >0.01 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Number of samples | 4,868 | 198 | 71 | 40 | 24 | 21 | 11 | 11 | 7 | 4 | 1 | 5,256 |