Water quality study on the hot and cold water supply systems at vietnamese hotels

Kanako Toyosada, Takayuki Otani, Yasutoshi Shimizu, Shunsuke Managi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study was conducted as part of the Joint Crediting Mechanism (JCM) of the Japanese Ministry of Economy, Trade and Industry, and the Ministry of the Environment project's preparation in Vietnam. Samples were taken from hot and cold water supplies from guest rooms' faucets in 12 hotels in Hanoi city, Vietnam, and 13 hotels in Japan for comparison. A simple water quality measurement and determination of Legionella was carried out. The results showed that residual effective chlorine-which guarantees bactericidal properties-was not detected in tap water supplied in hotel rooms in Vietnam, and nitrite (an indicator of water pollution) was detected in 40% of buildings. In the hotels in Japan, the prescribed residual chlorine concentration met the prescribed levels, and nitrite was not detected. Additionally, while there was no Legionella detected in the Japanese cases, it was detected in most of the Vietnamese hotels, which were found to manage the hot water storage tank at low temperatures of 40-50 °C. It was found that there were deficiencies in cold and hot water supply quality, and that there was no effective system in place for building operation maintenance and management.

Original languageEnglish
Article number251
JournalWater (Switzerland)
Volume9
Issue number4
DOIs
Publication statusPublished - Apr 1 2017

Fingerprint

Water supply systems
Vietnam
Hotels
Water Supply
Water Quality
cold water
Legionella
water management
water supply
Water quality
water quality
Chlorine
chlorine
Nitrites
water
nitrites
ministry
nitrite
Japan
Water Pollution

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Geography, Planning and Development
  • Aquatic Science
  • Water Science and Technology

Cite this

Water quality study on the hot and cold water supply systems at vietnamese hotels. / Toyosada, Kanako; Otani, Takayuki; Shimizu, Yasutoshi; Managi, Shunsuke.

In: Water (Switzerland), Vol. 9, No. 4, 251, 01.04.2017.

Research output: Contribution to journalArticle

Toyosada, Kanako ; Otani, Takayuki ; Shimizu, Yasutoshi ; Managi, Shunsuke. / Water quality study on the hot and cold water supply systems at vietnamese hotels. In: Water (Switzerland). 2017 ; Vol. 9, No. 4.
@article{a90dc42139ad49d58d743a0b7d032187,
title = "Water quality study on the hot and cold water supply systems at vietnamese hotels",
abstract = "This study was conducted as part of the Joint Crediting Mechanism (JCM) of the Japanese Ministry of Economy, Trade and Industry, and the Ministry of the Environment project's preparation in Vietnam. Samples were taken from hot and cold water supplies from guest rooms' faucets in 12 hotels in Hanoi city, Vietnam, and 13 hotels in Japan for comparison. A simple water quality measurement and determination of Legionella was carried out. The results showed that residual effective chlorine-which guarantees bactericidal properties-was not detected in tap water supplied in hotel rooms in Vietnam, and nitrite (an indicator of water pollution) was detected in 40{\%} of buildings. In the hotels in Japan, the prescribed residual chlorine concentration met the prescribed levels, and nitrite was not detected. Additionally, while there was no Legionella detected in the Japanese cases, it was detected in most of the Vietnamese hotels, which were found to manage the hot water storage tank at low temperatures of 40-50 °C. It was found that there were deficiencies in cold and hot water supply quality, and that there was no effective system in place for building operation maintenance and management.",
author = "Kanako Toyosada and Takayuki Otani and Yasutoshi Shimizu and Shunsuke Managi",
year = "2017",
month = "4",
day = "1",
doi = "10.3390/w9040251",
language = "English",
volume = "9",
journal = "Water (Switzerland)",
issn = "2073-4441",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "4",

}

TY - JOUR

T1 - Water quality study on the hot and cold water supply systems at vietnamese hotels

AU - Toyosada, Kanako

AU - Otani, Takayuki

AU - Shimizu, Yasutoshi

AU - Managi, Shunsuke

PY - 2017/4/1

Y1 - 2017/4/1

N2 - This study was conducted as part of the Joint Crediting Mechanism (JCM) of the Japanese Ministry of Economy, Trade and Industry, and the Ministry of the Environment project's preparation in Vietnam. Samples were taken from hot and cold water supplies from guest rooms' faucets in 12 hotels in Hanoi city, Vietnam, and 13 hotels in Japan for comparison. A simple water quality measurement and determination of Legionella was carried out. The results showed that residual effective chlorine-which guarantees bactericidal properties-was not detected in tap water supplied in hotel rooms in Vietnam, and nitrite (an indicator of water pollution) was detected in 40% of buildings. In the hotels in Japan, the prescribed residual chlorine concentration met the prescribed levels, and nitrite was not detected. Additionally, while there was no Legionella detected in the Japanese cases, it was detected in most of the Vietnamese hotels, which were found to manage the hot water storage tank at low temperatures of 40-50 °C. It was found that there were deficiencies in cold and hot water supply quality, and that there was no effective system in place for building operation maintenance and management.

AB - This study was conducted as part of the Joint Crediting Mechanism (JCM) of the Japanese Ministry of Economy, Trade and Industry, and the Ministry of the Environment project's preparation in Vietnam. Samples were taken from hot and cold water supplies from guest rooms' faucets in 12 hotels in Hanoi city, Vietnam, and 13 hotels in Japan for comparison. A simple water quality measurement and determination of Legionella was carried out. The results showed that residual effective chlorine-which guarantees bactericidal properties-was not detected in tap water supplied in hotel rooms in Vietnam, and nitrite (an indicator of water pollution) was detected in 40% of buildings. In the hotels in Japan, the prescribed residual chlorine concentration met the prescribed levels, and nitrite was not detected. Additionally, while there was no Legionella detected in the Japanese cases, it was detected in most of the Vietnamese hotels, which were found to manage the hot water storage tank at low temperatures of 40-50 °C. It was found that there were deficiencies in cold and hot water supply quality, and that there was no effective system in place for building operation maintenance and management.

UR - http://www.scopus.com/inward/record.url?scp=85017577520&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85017577520&partnerID=8YFLogxK

U2 - 10.3390/w9040251

DO - 10.3390/w9040251

M3 - Article

AN - SCOPUS:85017577520

VL - 9

JO - Water (Switzerland)

JF - Water (Switzerland)

SN - 2073-4441

IS - 4

M1 - 251

ER -