Health risk assessment of groundwater arsenic pollution in southern Taiwan.

摘要: Residents of the Pingtung Plain, Taiwan, use groundwater for drinking. However, monitoring results showed that a considerable portion has an As concentration higher than safe drinking water regulation 10 μg/L. Considering residents Plain continue to drinking, this study attempted evaluate exposure and health risk from groundwater. The was evaluated based on hazard quotient (HQ) target (TR) established by US Environmental Protection Agency. 95th percentile HQ exceeded 1 TR above value threshold 10-6. To illustrate significant variability consumption rate body weight each individual, assessments were also performed using spectrum daily intake reasonably conservatively assess specific subgroups population Plain. assessment 0.01-7.50 % population's levels are as much 77.7-93.3 % being in high cancer category having >10-6. estimation implied purpose places people at exposure. government must make great efforts provide