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Int. J. Environ. Res. Public Health 2013, 10(9), 4143-4160; doi:10.3390/ijerph10094143

An Evaluation of Microbial and Chemical Contamination Sources Related to the Deterioration of Tap Water Quality in the Household Water Supply System

Department of General Education, Konyang University, 121 Daehakro, Nonsan, Chungnam 320-711, Korea
Received: 3 July 2013 / Revised: 8 August 2013 / Accepted: 21 August 2013 / Published: 6 September 2013
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Abstract

The predominant microorganisms in samples taken from shower heads in residences in the Korean city “N” were Stenotrophomonas maltophilia, Sphingomonas paucimobilis, Acidovorax temperans, and Microbacterium lacticum. Legionella was not detected in this case. The volatile organic compounds (VOCs) vinylacetate, NN-DMA, cis-1,2-dichloroethylene, epichlorohydrin, and styrene were measured in five types of plastic pipes: PVC, PB, PP, PE, and cPVC. The rate of multiplication of the heterotrophic plate count (HPC) attached on the copper pipe in contact with hot tap water was higher than the rate for the copper pipe in contact with cold tap water. Biofilm accumulation on stainless steel pipes with added acetate (3 mg/L) was 2.56 times higher than the non-supplemented condition. Therefore, the growth of HPC in the pipe system was affected by the type and availability of nutrients and depended on variables such as heating during the hot water supply. View Full-Text
Keywords: drinking water; biofilm; volatile organic compounds; water supply systems; household plumbing drinking water; biofilm; volatile organic compounds; water supply systems; household plumbing
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Lee, Y. An Evaluation of Microbial and Chemical Contamination Sources Related to the Deterioration of Tap Water Quality in the Household Water Supply System. Int. J. Environ. Res. Public Health 2013, 10, 4143-4160.

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