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- SHRESTHA Salina
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Japan
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- S. MALLA Sadhana
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Japan
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- AIHARA Yoko
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Japan
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- KONDO Naoki
- School of Public health, The University of Tokyo, Japan
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- NISHIDA Kei
- International Research Centre for River Basin Environment, University of Yamanashi, Japan
書誌事項
- タイトル別名
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- Water Quality at Supply Source and Point of Use in the Kathmandu Valley
抄録
Water scarcity is a major issue in the Kathmandu Valley. Also, from a health perspective, it is important to evaluate the relationship between the quantity and quality of available water. In this study, we identified the water source used, and its availability and quality at the source and point of use. This was done by conducting a questionnaire survey and measuring the level of indicator bacteria and free residual chlorine in domestic water sampled at households. The results showed that most households used mixed water sources, with piped water being preferred for consumption. Nonparametric statistical tests showed that the total coliform was significantly high in source water with a longer supply interval and also high in stored water. In addition, but not of statistical significance, Escherichia coli was mostly detected in source water with a longer supply interval and also in stored water. In contrast, the proportion of samples with free residual chlorine was lower in water with a longer supply interval. Partial correlations showed that a longer cleaning interval of water storage vessels was associated with lower water availability and might lead to contamination of stored water. Therefore, safe storage of water should be promoted at the household level, and water supply services should be improved at the regional scale.
収録刊行物
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- Journal of Water and Environment Technology
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Journal of Water and Environment Technology 11 (4), 331-340, 2013
公益社団法人 日本水環境学会
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詳細情報 詳細情報について
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- CRID
- 1390282680154849664
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- NII論文ID
- 130003363032
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- ISSN
- 13482165
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可