Abstract

Taizhou is a typical coastal area in East China where drinking water is mainly supplied by reservoir water. The water quality of the reservoirs may be affected to some extent by human activities and climate. Therefore, the purpose of this study is to evaluate the water quality characteristics of the main water supply reservoirs in Taizhou City, Zhejiang Province, and to study the influence of the two rainy periods, the plum rains period and the typhoon rains period, on the water quality of the reservoirs using the entropy water quality index evaluation method. Total non-carcinogenic and carcinogenic health risks from different exposure pathways were assessed for people at different ages. It is found that the water quality of the main water supply reservoirs in Taizhou City is generally good and suitable for drinking, but the water quality of the reservoirs will deteriorate during the rainy seasons. Non-carcinogenic health risks are at acceptable levels for all age groups, but unacceptable high carcinogenic health risks are observed for both children and adults, which is mainly caused by As. Through this study, local decision-makers can be better informed for a better management of surface water resources in this area.

摘要

台州是典型的华东沿海地区，饮用水主要靠水库水供应。水库的水质可能在一定程度上受到人类活动和气候的影响。因此，本研究的目的是评价浙江省台州市主要供水水库水质特征，研究梅雨期和台风雨期两个雨季对水库水质的影响。水库水质熵值指标评价方法[J]. 评估了不同年龄人群的不同暴露途径的总非致癌和致癌健康风险。经调查，台州市主要供水水库水质总体良好，适宜饮用，但在雨季，水库的水质会变差。所有年龄组的非致癌健康风险都在可接受的水平，但儿童和成人都存在不可接受的高致癌健康风险，这主要是由砷引起的。通过这项研究，当地决策者可以更好地了解如何更好地管理该地区的地表水资源。