Abstract
To establish more reasonable standard vales of toxic compounds in drinking water, the infonnation of allocation to drinking water is highly important: This study was designed to estimate allocation of haloacetic acids (HAAs) exposure to drinking water. The exposure amounts via 4 routes (ingestion (drinking water and f ood), inhalation, transdennal exposure), were estimated respectively based on actual concentrations of HAAs in drinking water, air, and food The results indicated that the percentage of dietary exposure to HAAs was greater than other routes in many compounds. Therefore it was considered that dietaty exposure was important in establishing standard values of HAAs in drinking water. In case of dichloroacetic acid and trichloroacetic acid, the median allocations to drinking water were lower than the current default value 20%.
