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ABSTRACT
The aim of this study was to investigate the contamination levels of heavy metals and to develop the baseline risk to health effects within the source areas of drinking water in Taihu Lake Basin (TLB), an area undergoing population and economic growth. Samples of water were collected from 12 representative drinking water supply areas of TLB, and were analyzed for seven heavy metals. The Hazard Indexes (HIs) for all oral exposure to the seven metals ranged from 0.03 to 0.08, which was less than the acceptable non-cancer human health hazard index of 1. As and Fe together contributed more than 98% of the overall HI, which suggests that future monitoring of water quality for these two metals should be considered.
ACKNOWLEDGMENTS
We profoundly acknowledge the valuable review comments and suggestions on the draft manuscript by Dr. Barry Johnson, HERA editor, and two anonymous reviewers. This project was supported by the National Natural Science Fund of China (41071018, 41030746, 40725010, 40730635), Water Resources Public-welfare Project (200701024), and the Skeleton Young Teachers Program and Excellent Disciplines Leaders in Midlife-Youth Program of Nanjing University.
Notes
*ND: Not-detected; NC: Not-computed; MLL: Meilianghu Lake, GL: Gonghu Lake, ETL: East Taihu Lake; SD: Standard Deviation.
*NC: Not-computed; MLL: Meilianghu Lake, GL: Gonghu Lake, ETL: East Taihu Lake.
