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http://dx.doi.org/10.4491/KSEE.2016.38.7.371

Distribution and Risk Assessment of Bisphenol-A in Tap Water from Rehabilitated Indoor Water Service Pipe  

Jeong, Gwanjo (Seoul Water Institute, Seoul Metropolitan Government)
Son, Boyoung (Seoul Water Institute, Seoul Metropolitan Government)
Lee, Inja (Seoul Water Institute, Seoul Metropolitan Government)
Ahn, Chihwa (Seoul Water Institute, Seoul Metropolitan Government)
Kim, Junil (Seoul Water Institute, Seoul Metropolitan Government)
Moon, Boram (Seoul Water Institute, Seoul Metropolitan Government)
Lee, Suwon (Seoul Water Institute, Seoul Metropolitan Government)
Ahn, Jaechan (Seoul Water Institute, Seoul Metropolitan Government)
Kim, Bogsoon (Seoul Water Institute, Seoul Metropolitan Government)
Chung, Deukmo (Seoul Water Institute, Seoul Metropolitan Government)
Publication Information
Journal of Korean Society of Environmental Engineers / v.38, no.7, 2016 , pp. 371-376 More about this Journal
Abstract
In this study, the survey of bisphenol-A in indoor water service pipes rehabilitated with epoxy resin was conducted and the risk assessment was done to investigate the effect on the human health to drink tap water. Bisphenol-A in raw water was detected in a range of 50~118 ng/L in all samples, where the limit of quantification was 10 ng/L. This is caused by inflow of the sewage effluent or the tributaries of the surrounding area containing bisphenol-A. Bisphenol-A was not detected in finished water after the advanced water treatment process. It was achieved by its removal from the processes of flocculation-precipitation and oxidation of ozone and chlorine and by being changed to other by-product materials. For the indoor water service pipe, bisphenol-A was not detected in all cases which was not coated with epoxy resin. However, when epoxy resin is lined within the indoor water service pipe, bisphenol-A was identified at maximum level of 521 ng/L and was detected above the limit of quantitation at 68 percentages of all samples. The Hazard Quotient (HQ) at the maximum level (521 ng/L) of the detected bisphenol-A is 0.004, which is less than the reference value of 0.1 for the tap water intake. Therefore, it is considered that the detected levels of bisphenol-A in this study would be safe to drink tap water.
Keywords
Bisphenol-A; Risk Assessment; Indoor Water Service Pipe; Hazard Quotient;
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