• Xiaohuan Jiang Graduate School of Horticulture, Chiba University
Keywords: rainwater harvesting, citizen participation, willingness to work (WTW), willingness to pay (WTP), Japan


Citizen participation of rainwater harvesting is a valuable practice to mitigate problems such as groundwater mining, land subsidence, and urban flooding cause by global warming and urbanization in japan. In this study, we defined rainwater harvesting as activities carried out by citizens aimed at using rainwater, and examining the hypothesis that people’s willingness to work (WTW) and willingness to pay (WTP) for rainwater harvesting differ depending on their lifestyles and experience of using rainwater. We conducted a survey over the internet in August 2017, covering 1,794 people in Japan. The survey questions addressed three areas: (1) respondents’ lifestyles, (2) their experience of using rainwater, and (3) their willingness to participate in rainwater harvesting. As the results, we concluded that activities that ask for time or labor are preferable to those that ask for money, and people’s WTW and WTP do in fact differ based on lifestyle. Older people, full-time housewives/husbands, and non-workers have comparatively more time for participating in rainwater harvesting, and showed more interest in activities that ask for time or labor. Men and owners of single-family homes have higher annual incomes and thus greater WTP for rainwater harvesting. Moreover, WTW and WTP differed depending on whether a person had experience using rainwater. Men and younger people having more experience than women and elderly people. However, there were only 10% of the public has experience using rainwater, which shows that there is room to further promote rainwater harvesting.


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Author Biography

Xiaohuan Jiang, Graduate School of Horticulture, Chiba University
Graduated from The College of Agriculture and Biotechnology (CAB) at Zhejiang University in 2011. Entered the Graduate School of Horticultural Science, Chiba University at 2013. During the doctoral course is studying rainwater harvesting and green infrastructure. In April 2018, a peer review paper Relationship between Citizens’ Participation Awareness and Their Lifestyle Concerning to Rainwater Harvesting was published on Journal on The Japanese Institute of Landscape Architecture Vol.81 No.5.


Abidin, H. Z. Andreas, H. Gumilar, I. Wibowo, I. R. R. 2015. On correlation between urban development, land subsidence and flooding phenomena in Jakarta, Proceedings of the International Association of Hydrological Sciences. 370: 15-20.

Asakura, A. Shibata, Y. Ono, S. 2014. A study of Willingness to Pay for the Installation of Household Detention Tank. Environmental Information Science. 28: 233-238

Association for Rainwater Storage and Infiltration Technology (ARSIT). 2006. Installation Manual of Rainwater Storage and Infiltration Facilities in Single-family Houses. (accessed 19 Sep 2017).

Architectural Institute of Japan (AIJ). 2011. Guideline for Rainwater Harvesting Architecture Architectural Institute of Japan Environmental Standards AIJES-W0002-2011: Architectural Institute of Japan

Berndtsson, J. C. 2010. Green roof performance towards management of runoff water quantity and quality: A review. Ecological Engineering. 36: 351–360.

Boelee, E. Yohannes, M. Poda, J. N. Mccartney, M. Cecchi, P. Kibret. S. Hagos. F. Laamrani, H. 2013. Options for water storage and rainwater harvesting to improve health and resilience against climate change in Africa. Reg Environ Change. 13(3): 509-519.

Dirks, F. J. H. Rismianto, D. De Wit, G. J. 1988. Groundwater in Bekasi District, West Java, Indonesia Natuurwet. Tijdschr 70(6), 47-55.

Domènech, L. & Saurí, D. 2011. A comparative appraisal of the use of rainwater harvesting in single and multi- family buildings of the Metropolitan Area of Barcelona (Spain): social experience, drinking water savings and economic costs. Journal of Cleaner Production. 19: 598-608.

Feitosa, R. C. Wilkinson, S. 2016. Modelling green roof stormwater response for different soil depths. Landscape and Urban Planning. 153: 170–179.

Julius, J. R. Prabhavathy, R. A. Ravikumar, G. 2013. Rainwater Harvesting (RWH) - A Review. International Journal of Scientific & Engineering Research. 4(8): 276-282.

Kasai, T. 2012. Effect of Environmental Load Reduction by the Rainwater Harvesting System for Detached House based on Regional Characteristics. Journal of Rainwater Catchment Systems. 18(1): 27-33.

Kawasaki, A. Meguro, K. 2011. A preliminary investigation on the introduction of housing water tanks to store rainwater for improving urban environment and disaster risk reduction. SEISAN KENKYU. 63(4): 451-456.

Kumar, R. Thaman, S. Agrawal, G. Poonam, S. 2011. Rain Water Harvesting and Ground Water Recharging in North Western Himalayan Region for Sustainable Agricultural Productivity. Universal Journal of Environmental Research and Technology. 1(4): 539–544.

Naito, T. 1950. Utilization of rainwater at the foot of Mount Fuji. Journal of the Agricultural Engineering Society, Japan 17(2-3), 109-113.

Mamada. M. 2010. Estimation of WTW (willingness to work) as a forest volunteer based on contingent behavior. Food, agriculture and the environment. 7: 40-47

Murakawa, S. Morita, D. Miwa, B. Koshikawa, Y. 1986. Study on the environment of island domestic water system in okinawa: On the rain water uses. Journal of Architecture, Planning and Environmental Engineering. 368(0), 52-61.

Ohno, E. 2001. Benefit Evaluation of River Environmental Improvement Project by CVM: A Comparison between WTP and WTW. Journal of Japan Society of Civil Engineers. 18(1): 49–55.

Ozaki, T. Wada, Y. Miura, H. Matsumoto, Y. 2003. Inhabitants consciousness for the multipurpose stormwater reservoir. Journal of Environmal systems research. 31: 195-200.

Policy Publicity Office of the Cabinet Secretariat. 2014. Survey on household water use. (accessed 10 Sep 2017).

Song, J. Han, M. Kim, T. & Song, J. 2009. Rainwater harvesting as a sustainable water supply option in Banda Aceh. Desalination. 248(1-3): 233–240.

Sudiajeng, L. Wiraga, I. W. Parwita, I. G. L. Santosa, G. 2017. Domestic Recharge Wells for Rainwater-Harvesting in Denpasar City, Bali-Indonesia. Journal of GEOMATE. 13(36): 50-57

Statistics Japan (Statistic Bureau, Ministry of Internal Affairs and Communications). 2011. Results Summary of 2008 Housing and Land Survey. (accessed 8 March 2018).

Statistics Japan (Statistic Bureau, Ministry of Internal Affairs and Communications). 2014. Results Summary of 2014 Housing and Land Survey (Promot Report). (accessed 8 March 2018).

Statistics Japan (Statistic Bureau, Ministry of Internal Affairs and Communication). 2018. Labor Force Survey (Detailed Total) Heisei 29 (2017) Average (Promot Report). (accessed 8 March 2018).

The Japanese Ministry of Land, Infrastructure, Transport and Tourism (MLIT). 2015. Introduction of Assistance Measures for the Installation of Rainwater Storage Infiltration Facilities. (accessed 19 Sep 2017).

The Japanese Ministry of Land, Infrastructure, Transport and Tourism (MLIT). 2014. The Basic Water Cycle Act. (accessed 19 Sep 2017).

The Japanese Ministry of Land, Infrastructure, Transport and Tourism (MLIT). 2015. Law on the Promotion of Rainwater Usage. 19 Sep 2017).

Watanabe, R. Hamada, T. Iyooka, H. Yamasaki, K. Shimatani, Y. Yamashita, S. Moriyama, T. Minagawa, T. 2013. Case Study of the beneficial use of rain water in connection with water quality at the Rainwater Harvesting Experimental House to Store Heavy Rainwater. Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) .69(7): 453-460.

Yamashita, S. Watanabe, R. Shimatani, Y. 2016. Smart adaptation activities and measures against urban flood disasters. Sustainable Cities and Society. 27: 175–184.

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