(Appendix 1) Questionnaire of daily consumption frequency and human health risk of chemical exposure from food (vegetables, seafood) during the last 7 days (Appendix 2) * The evaluation methods for the human health risk of consuming HM contaminated wellwater, seafood (fish, shrimp, snail) and vegetables: applying US EPA and WHO guidelines to calculate the hazard quotient (HQ), hazard index (HI), cancer risk [105, 106].