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Securing Safe Drinking Water in Cities Practicing Intermittent Water Supply to Achieve SDGs

Research Project

Project/Area Number 17H04587
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Civil and environmental engineering
Research InstitutionThe University of Tokyo

Principal Investigator

Takizawa Satoshi  東京大学, 大学院工学系研究科(工学部), 教授 (10206914)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2019: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2018: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2017: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Keywords間欠給水(IWS) / water level monitoring / household treatment / conjunctive water use / 飲料水質の迅速評価(RADWQ) / Kathmandu / Yangon / Manila / IWA / household water use / RADWQ / Chiang Mai / IWS
Outline of Final Research Achievements

Kathmandu City is one of the Asian cities where intermittent water supply is prevailing due to a lack of water resources and delay in extension of water supply systems. The weekly water supply hours among the residents in Kathmandu City varied from 2 hours to 168 hour, indicating serious inequality. The Gini coefficient for Kathmandu city’s water supply hours obtained from the Lorenz curve was 0.67. In addition, the residents who can access short hours to piped water must pay for alternative water sources, such as truck delivered water, which is more expensive and contaminated than piped water. Although household water treatment could alleviate the water quality problems under IWS, there is a need for compulsory re-distribution of limited amounts of water for eradicate water inequality under IWS.

Academic Significance and Societal Importance of the Research Achievements

本研究では、水源や水の消費量などの情報が乏しいアジアの開発途上国において、これらを推定する方法を提案した。開発途上国では多くの水道メーターが破損しているが、間欠給水を行う都市では多くの家庭が貯水槽を有しており、水位計データロガーを貯水槽に設置することで、水の消費量や用途を推定する方法を提案した。また、水消費量が建物の形態と高い相関を有することを利用して、都市の各地区における水消費量を高い精度で推定する方法を提案した。
また、間欠給水を受ける都市では、給水時間や水使用量、水質、水の価格など、市民の間で多くの不平等が発生しており、これらを是正し公平な水供給をおこなう必要があることを明らかにした。

Report

(4 results)
  • 2020 Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (43 results)

All 2021 2020 2019 2018 2017

All Journal Article (23 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 21 results,  Open Access: 9 results) Presentation (20 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Influences of cross‐linking agents with different MW on the structure of GO/CNT’s layers, membrane performances and fouling mechanisms for dissolved organic matter2021

    • Author(s)
      Jinging Zhao, Yu Yang, Jiazhen Jiang, Satoshi Takizawa, Li’an Hou
    • Journal Title

      Journal of Membrane Science

      Volume: 617 Pages: 118616-118616

    • DOI

      10.1016/j.memsci.2020.118616

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Assessment of Fluoride Intake from Rice Consumption by Using Tap Water Containing Fluoride for Rice Soaking Water2020

    • Author(s)
      Benyapa Sawangjang, Satoshi Takizawa
    • Journal Title

      Journal of Water and Environment Technology

      Volume: 18 Issue: 2 Pages: 117-131

    • DOI

      10.2965/jwet.19-084

    • NAID

      130007830259

    • ISSN
      1348-2165
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Report cards for ageing and maintenance assessment of water‐supply infrastructure2020

    • Author(s)
      Hiroshi Sakai, Mei Satake, Yasuhiro Arai, Satoshi Takizawa
    • Journal Title

      Journal of Water Supply: Research and Technology - AQUA

      Volume: 69(4) Issue: 4 Pages: 355-364

    • DOI

      10.2166/aqua.2020.112

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison between ferrihydrite adsorption and full‐scale advanced drinking water treatment processes for controlling bacterial regrowth potential2020

    • Author(s)
      Yu Yang, Jenyuk Lohwacharin, Satoshi Takizawa, Li‐an Hou
    • Journal Title

      Chemosphere

      Volume: 241 Pages: 125001-125001

    • DOI

      10.1016/j.chemosphere.2019.125001

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of groundwater quality and reverse osmosis water treatment plants in the endemic areas of Chronic Kidney Disease of Unknown Etiology (CKDu) in Sri Lanka2020

    • Author(s)
      Sachithra Imbulana, Kumiko Oguma, Satoshi Takizawa
    • Journal Title

      Science of The Total Environment

      Volume: 745 Pages: 140716-140716

    • DOI

      10.1016/j.scitotenv.2020.140716

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Modeling and Analysis of Particle Deposition Processes on PVDF Membranes Using SEM Images and Image Generation by Auxiliary Classifier Generative Adversarial Networks2020

    • Author(s)
      Cacciatori Caterina、Hashimoto Takashi、Takizawa Satoshi
    • Journal Title

      Water

      Volume: 12 Issue: 8 Pages: 2225-2225

    • DOI

      10.3390/w12082225

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ANALYSIS OF FACTORS CAUSING DAY ZERO AND PROBLEMS IN WATER GOVERNANCE USING SNS DATA IN CHENNAI, INDIA.2020

    • Author(s)
      杉山琴美、風間しのぶ、小熊久美子、滝沢智
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 76 Issue: 7 Pages: III_53-III_63

    • DOI

      10.2208/jscejer.76.7_III_53

    • NAID

      130007999645

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] LONGITUDINAL FLOWRATE DISTRIBUTION AND BYPASS FLOW MEASUREMENT OF BROKEN HOLLOW FIBER MEMBRANES2020

    • Author(s)
      NAMOTO Koki、HASHIMOTO Takashi、KAZAMA Shinobu、OGUMA Kumiko、TAKIZAWA Satoshi
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 76 Issue: 7 Pages: III_205-III_214

    • DOI

      10.2208/jscejer.76.7_III_205

    • NAID

      130007999683

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ASSESSMENT OF BILLED-UNMETERED WATER CONSUMPTION TO IMPROVE WATER UTILITY MANAGEMENT IN YANGON CITY2020

    • Author(s)
      Khaing Khaing Soe, Shinobu Kazama, Satoshi Takizawa
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 76 Issue: 7 Pages: III_277-III_285

    • DOI

      10.2208/jscejer.76.7_III_277

    • NAID

      130007999703

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
  • [Journal Article] DEVELOPMENT OF CONVOLUTIONAL NEURAL NETWORK MODELS FOR FEATURE EXTRACTION OF PVDF MEMBRANE SURFACES2020

    • Author(s)
      CACCIATORI Caterina、HASHIMOTO Takashi、TAKIZAWA Satoshi
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 76 Issue: 7 Pages: III_299-III_309

    • DOI

      10.2208/jscejer.76.7_III_299

    • NAID

      130007999696

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] INFLUENCE OF FILTRATION FLUX ON FOULING LAYER FORMATION IN GRAVITY-DRIVEN MEMBRANE FILTRATION2019

    • Author(s)
      YAMASAKI Soshi、HASHIMOTO Takashi、OGUMA Kumiko、TAKIZAWA Satoshi
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 75 Issue: 1 Pages: 1-12

    • DOI

      10.2208/jscejer.75.1

    • NAID

      130007563424

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ferrihydrite treatment to mitigate inhibition of RT-qPCR virus detection from large-colume environmental water samples2019

    • Author(s)
      Vu Duc Canh, Hideki Osawa, Kentaro Inoue, Ikuro Kasuga, Satoshi Takizawa, Hiroaki Furumai, Katayama Hiroyuki
    • Journal Title

      Journal of Virological Methods

      Volume: 263 Pages: 60-67

    • DOI

      10.1016/j.jviromet.2018.10.018

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Raw water storage as a simple means for controlling membrane fouling caused by inorganic foulants in river water in Chiang Mai, Thailand.2019

    • Author(s)
      Takashi Hashimoto, Patricia Anjerina Gunawan, Suraphong Wattanachira and Aunnop Wongrueng, Satoshi Takizawa
    • Journal Title

      Water

      Volume: 11(8) Issue: 8 Pages: 1592-1592

    • DOI

      10.3390/w11081592

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Assessment of fluoride intake from groundwater and intake reduction from delivering bottled water in Chiang Mai Province, Thailand2019

    • Author(s)
      Benyapa Sawangjang, Takashi Hashimoto, Aunnop Wongrueng,, Suraphong Wattanachira, and Satoshi Takizawa
    • Journal Title

      Heliyon

      Volume: 5(9) Issue: 9 Pages: e02391-e02391

    • DOI

      10.1016/j.heliyon.2019.e02391

    • Related Report
      2019 Annual Research Report
    • Open Access
  • [Journal Article] PULSED UV IRRADIATION USING DEEP UV-LED FOR INACTIVATION OF <i>ESCHERICHIA COLI</i>2019

    • Author(s)
      佐渡友康、小熊久美子、橋本崇史、風間しのぶ、滝沢智
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 75 Issue: 7 Pages: III_91-III_96

    • DOI

      10.2208/jscejer.75.7_III_91

    • NAID

      130007814677

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] APPLICATION OF OPTICAL FIBER SENSOR FOR DETECTION OF HOLLOW-FIBER MEMBRANE BREAKAGE USED FOR WATER PURIFICATION2019

    • Author(s)
      名本 昂生, 橋本 崇史, 風間 しのぶ, 小熊 久美子, 滝沢 智
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 75 Issue: 7 Pages: III_329-III_339

    • DOI

      10.2208/jscejer.75.7_III_329

    • NAID

      130007814606

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Properties of UV inactivation of Aggregated <i>Escherichia coli</i>2019

    • Author(s)
      政池美映、小熊久美子、橋本崇史、滝沢智
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 75 Issue: 7 Pages: III_85-III_90

    • DOI

      10.2208/jscejer.75.7_III_85

    • NAID

      130007814684

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] AGEING MECHANISM OF PVDF FOLLOW-FIBER MEMBRANES USED IN WATER PURIFICATION PLANT2019

    • Author(s)
      米澤 有貴, 橋本 崇史, 風間 しのぶ, 小熊 久美子, 藤村 一良, 滝沢 智
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 75 Issue: 7 Pages: III_341-III_350

    • DOI

      10.2208/jscejer.75.7_III_341

    • NAID

      130007814632

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation Indexes for Deterioration Condition and Maintenance Management System for Drinking Water Distribution Pipeline2019

    • Author(s)
      酒井宏治、佐竹明、滝沢智
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 75 Issue: 7 Pages: III_413-III_423

    • DOI

      10.2208/jscejer.75.7_III_413

    • NAID

      130007814644

    • ISSN
      2185-6648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Data logger-based measurement of household water consumption and micro-component analysis of an intermittent water supply system2018

    • Author(s)
      Bibas Guragai, Takashi Hashimoto, Kumiko Oguma and Satoshi Takizawa
    • Journal Title

      Journal of Cleaner Production

      Volume: 197 Pages: 1159-1168

    • DOI

      10.1016/j.jclepro.2018.06.198

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 政府開発援助と経済成長が基本的な水供給へのアクセス改善に及ぼす効果2018

    • Author(s)
      松原康一, 橋本崇史, 小熊久美子, 滝沢 智
    • Journal Title

      土木学会論文集G(環境)

      Volume: 74(7)

    • NAID

      130007627373

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of inequality of supply hours on consumers' coping strategies and perceptions of intermittent water supply in Kathmandu Valley, Nepal2017

    • Author(s)
      Bibas Guragai, Satoshi Takizawa,Takashi Hashimoto, Kumiko Oguma
    • Journal Title

      Science of The Total Environment

      Volume: 599-600 Pages: 431-441

    • DOI

      10.1016/j.scitotenv.2017.04.182

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Water Quality Change from Source to the Point-of-Consumption in an Intermittent Water Supply System2017

    • Author(s)
      Guragai, B., S. Takizawa, T. Hashimoto, and K. Oguma
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 73 Issue: 7 Pages: III_29-III_39

    • DOI

      10.2208/jscejer.73.III_29

    • NAID

      130006602940

    • ISSN
      2185-6648
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] 開発途上国の大規模都市圏における大規模渇水の事例と水ガバナンスの課題2020

    • Author(s)
      杉山琴美、風間しのぶ、小熊久美子、滝沢智
    • Organizer
      第23回日本水環境学会シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Management Practice of Private Water Service Operators in Cambodia2020

    • Author(s)
      Thor Kounthy、風間しのぶ、滝沢智
    • Organizer
      第23回日本水環境学会シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] ヤンゴンの地下水汚染の現状と水利用の課題2020

    • Author(s)
      橋本隆生、風間しのぶ、小熊久美子、滝沢智
    • Organizer
      第23回日本水環境学会シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 浄水用中空糸ろ過膜破断時のろ過流量および膜内流量モデルにもとづく粒子阻止性能の評価2020

    • Author(s)
      名本昂生、橋本崇史、小熊久美子、滝沢智
    • Organizer
      第55回日本水環境学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 設備の限られた実験環境における簡易微生物核酸抽出手法の検討2020

    • Author(s)
      岡俊輔、風間しのぶ、小熊久美子、滝沢智
    • Organizer
      第55回日本水環境学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Assessment of Fluoride Intake from Rice Consumption by Using Tap Water Containing Fluoride for Rice Soaking Water2019

    • Author(s)
      SAWANGJANG, Benyapa
    • Organizer
      WET2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 膜ろ過浄水処理における中空糸膜の劣化 評価法の検討と劣化機構の解明2019

    • Author(s)
      米澤有貴
    • Organizer
      第95回水道研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 光ファイバセンサを用いた浄水用ろ過膜の損傷検知手法の開発2019

    • Author(s)
      名本昂生、橋本崇史、風間しのぶ、小熊久美子、滝沢智
    • Organizer
      第56回環境工学研究フォーラム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 日本の大・中都市における下水道普及による水質改善効果の定量的評価と人口減少による影響 の推定2019

    • Author(s)
      橋本隆生、風間しのぶ、橋本崇史、小熊久美子、滝沢智
    • Organizer
      第56回環境工学研究フォーラム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 膜ろ過浄水施設で長期間使用されたPVDF製中空糸膜の劣化機構の解明2019

    • Author(s)
      米澤有貴、橋本崇史、風間しのぶ、小熊久美子、藤村一良、滝沢智
    • Organizer
      第56回環境工学研究フォーラム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 水道管路の老朽化と維持管理に関する評価指標の検討2019

    • Author(s)
      酒井宏治、佐竹明、滝沢智
    • Organizer
      第56回環境工学研究フォーラム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 浄水処理用PVDF 製中空糸膜の定量的劣化評価手法の開発2019

    • Author(s)
      米澤有貴、橋本崇史、滝沢智
    • Organizer
      第 54 回日本水環境学会年
    • Related Report
      2019 Annual Research Report
  • [Presentation] SNS データを用いたインド・チェンナイ市におけるDayZero(大渇水)の発生要因と渇水状況下の市民行動の解析2019

    • Author(s)
      杉山琴美、風間しのぶ、小熊久美子、滝沢智
    • Organizer
      第 54 回日本水環境学会年
    • Related Report
      2019 Annual Research Report
  • [Presentation] 日本及びハノイにおける汚水処理の普及が環境水質の改善に及ぼす影響2019

    • Author(s)
      橋本隆生, 風間しのぶ, 黒田啓介, 滝沢智
    • Organizer
      第53回日本水環境学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 政府開発援助と経済成長が基本的な水供給へのアクセス改善に及ぼす効果2018

    • Author(s)
      松原康一, 橋本崇史, 小熊久美子, 滝沢 智
    • Organizer
      第55回環境工学研究フォーラム
    • Related Report
      2018 Annual Research Report
  • [Presentation] Novel Method for Measuring Household Water Consumption under Intermittent Water Supply2017

    • Author(s)
      Guragai Bibas
    • Organizer
      9th IWA Biennial Specialist Conference on Efficient Use and Management of Water
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparing Fluoride Adsorption Capacity onto Different Types of Bone Char2017

    • Author(s)
      Benyapa Sawangjang
    • Organizer
      Water and Environment Technology Conference 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Removal of Haloacetic Acid Precursors by Filtration Using Metal-Coated Filter Media2017

    • Author(s)
      Mitsuru Amano
    • Organizer
      Water and Environment Technology Conference 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Water Quality Change from Source to the Point-of-Consumption in an Intermittent Water Supply System2017

    • Author(s)
      Guragai Bibas
    • Organizer
      第54回環境工学研究フォーラム
    • Related Report
      2017 Annual Research Report
  • [Presentation] 全国の水道事業体における有効率の経年変化と無効率上昇要因の解析2017

    • Author(s)
      西村智之
    • Organizer
      第54回環境工学研究フォーラム
    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2022-01-27  

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