Risk associated with increasing bromide in drinking water sources in Yancheng City, China

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The bromide concentration in water source (WS) of Yancheng City in China increased unexpectedly due to industrial discharge and saltwater intrusion, which leads to the formation of trihalomethane (THMs) in finished water of water treatment plants (WTP), especially brominated THMs. In Yancheng City, drinking water is supplied by WTP1 and WTP2, primarily sourced by WS1 and WS2, respectively. In this paper, the seasonal variations of bromide in WS1 and WS2 and THMs species in WTP1 and WTP2 were analyzed and compared. The effects of bromide in WS on THMs formation in finished water of WTP in terms of bromine substitution factor (BSF) were simulated by statistical linear model. Although the THMs concentrations in WTP1 were approximate to that in WTP2, the brominated THMs concentrations in WTP1 were higher than that in WTP2 due to higher bromide concentration in WS1 than WS2. The cancer risk analysis indicated that THMs’ species of DBCM is the dominant THMs for WTP1 as well as WTP2, which can provide more information for WTPs with higher bromide concentration in water source.

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This work was funded by the Special S & T Project on Treatment and Control of Water Pollution from the Bureau of Housing and Urban–Rural Development of Jiangsu Province (Grant No. 2014ZX07405002). This work was funded by Water Pollution Control Project in Taihu (Grant No. TH2018403).

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Correspondence to Guangcan Zhu.

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Wang, Y., Zhu, G. Risk associated with increasing bromide in drinking water sources in Yancheng City, China. Environ Monit Assess 192, 36 (2020) doi:10.1007/s10661-019-7997-8

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  • Bromide
  • Trihalomethane (THMs)
  • Drinking water
  • Cancer risk
  • Water source
  • Water treatment plant