Table 4 Median iodine concentration in drinking water by category of water supply system and region
Category of the water supply system | Inland | Coast | ||
|---|---|---|---|---|
N | Median (IQR), μg/L | N | Median (IQR), μg/L | |
Pipelines | 11 | 1.0 (0.8–1.9) | 49 | 2.3 (1.9–3.2) |
Mixture | 134 | 1.0 (0.7–1.2) | 77 | 2.0 (1.3–2.4) |
Wells | 17 | 0.5 (0.4–1.0) | 2 | 0.7 (0.7–0.7) |
Total | 162 | 1.0 (0.6–1.2) | 128 | 2.0 (1.5–2.7) |