Girma Haileyesus, Geremew Abraham, Alemayehu Molla, Mulatu Gutema, Gebrehiwot Mesfin, Defloor Bart
Department of Environmental Health Science, Haramaya University, Harar, Ethiopia.
Department of Economics, Ghent University, Ghent, Belgium.
Environ Health Insights. 2022 Nov 2;16:11786302221134937. doi: 10.1177/11786302221134937. eCollection 2022.
Municipal solid waste collection (MSWC) service financing is a challenge for governments in developing countries, with little or no contribution from the service users. In most Ethiopian cities, residents do not pay for MSWC. This study aims to estimate households' willingness to pay (WTP) for improved municipal solid waste collection service in Harar city. A cross-sectional study was conducted among 331 households employing the contingent valuation method with a double-bounded dichotomous choice format. The hypothetical program works to collect solid waste twice a week, house-to-house, and safely dispose of it to reduce environmental and health impacts. The Tobit regression model was used to account for the determinants of households' WTP. Findings showed that 89% (95% CI: 85.4, 92.5) of households were WTP for the improved waste collection program, with an average yearly amount of US$12. The Tobit model shows that being married ( = 6.9, 95% CI: 1.2, 13.7), having a monthly household income of >8000 ETB ( = 31.9, 95% CI: 22.1, 41.7), attending education about MSWM ( = 11.8, 95% CI: 5.6, 18.1), having temporary storage at household level ( = 15.3, 95% CI: 9.5, 21.2), and recycling practices ( = 5.5, 95% CI: 1.2, 10.8) positively influenced the WTP. Interventions like providing educational programs about waste handling and recycling and providing or encouraging households to have temporary storage at the household level are needed to enhance users' WTP. The policy implication of the finding is that community contribution through service fees could be a strategy for sustainable financing.
城市固体垃圾收集（MSWC）服务的融资对发展中国家的政府而言是一项挑战，因为服务使用者几乎没有或根本没有缴费。在埃塞俄比亚的大多数城市，居民无需为城市固体垃圾收集服务付费。本研究旨在估计哈勒尔市家庭为改善城市固体垃圾收集服务的支付意愿（WTP）。采用双边界二分选择格式的条件价值评估法，对331户家庭进行了横断面研究。该假设项目旨在每周挨家挨户收集两次固体垃圾，并安全处置，以减少对环境和健康的影响。采用托比特回归模型来分析家庭支付意愿的决定因素。研究结果表明，89%（95%置信区间：85.4，92.5）的家庭愿意为改善后的垃圾收集项目付费，平均每年支付12美元。托比特模型显示，已婚（系数=6.9，95%置信区间：1.2，13.7）、家庭月收入>8000埃塞俄比亚比尔（系数=31.9，95%置信区间：22.1，41.7）、参加过关于城市固体废弃物管理的教育（系数=11.8，95%置信区间：5.6，18.1）、家庭有临时储存设施（系数=15.3，95%置信区间：9.5，21.2）以及有回收利用行为（系数=5.5，95%置信区间：1.2，10.8）对支付意愿有正向影响。需要通过开展关于垃圾处理和回收利用的教育项目，以及提供或鼓励家庭在家庭层面进行临时储存等干预措施，来提高用户的支付意愿。该研究结果的政策含义是，通过服务费实现社区贡献可能是可持续融资的一种策略。
