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A Closer Look at Effective Intervention Methods to Reduce Household Solid Waste Generation in Japan

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  • Yoshinori Saitoh

    (Graduate School of Regional Policy, Takasaki City University of Economics, 1300, Kaminamie, Takasaki 370-0801, Japan
    Gunma Prefectural Institute of Public Health and Environment Sciences, 378, Kamioki, Maebashi 371-0052, Japan)

  • Hiroshi Tago

    (Gunma Prefectural Institute of Public Health and Environment Sciences, 378, Kamioki, Maebashi 371-0052, Japan)

  • Kimiyo Kumagai

    (Gunma Prefectural Institute of Public Health and Environment Sciences, 378, Kamioki, Maebashi 371-0052, Japan)

  • Akihiro Iijima

    (Graduate School of Regional Policy, Takasaki City University of Economics, 1300, Kaminamie, Takasaki 370-0801, Japan)

Abstract

In many countries municipal solid waste (MSW) is expected to soon increase beyond the pace of population growth due to urbanization. To minimize its negative impact, MSW management needs to be advanced. We studied administrative awareness-raising projects aimed at reducing household solid waste (HSW), which accounts for a large portion of MSW. An online questionnaire survey was administered to local governments (LGs) in Japan to research the implementation status of the awareness-raising projects and estimate the waste reduction effect of intervention methods within those projects. Regarding social factors, multiple linear regression analysis showed significant negative relationships of HSW generation rate with the household population, total population, and waste charge system. Conversely, positive relationships were identified with age, the number of cars, income, and the frequency of collection. Intervention methods, such as briefing sessions, utilization of resident leaders, and mobile phone apps, were revealed to be effective; in contrast, information dissemination using the traditional intervention method was not. In particular, the utilization of resident leaders may be the most cost-effective, but some LGs seem to have abolished this form of intervention after its introduction 30 years ago due to lack of empirical evidence supporting its effectiveness.

Suggested Citation

  • Yoshinori Saitoh & Hiroshi Tago & Kimiyo Kumagai & Akihiro Iijima, 2022. "A Closer Look at Effective Intervention Methods to Reduce Household Solid Waste Generation in Japan," Sustainability, MDPI, vol. 14(22), pages 1-19, November.
  • Handle: RePEc:gam:jsusta:v:14:y:2022:i:22:p:14835-:d:968736
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    References listed on IDEAS

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