China Center of Western Capacity Development Research, School of Economics, Guizhou University, Guiyang, Guizhou, China.
Guizhou Grassroots Social Governance Innovation High-End Think Tank, Ecological Civilization (Guizhou) Research Institute, Guiyang, Guizhou, China.
Front Public Health. 2023 Mar 2;11:1054730. doi: 10.3389/fpubh.2023.1054730. eCollection 2023.
With rapid economic and social development, surging demand for domestic water, and the increasing shortage of water resources, the applications of intermittent water supply systems have become more common in rural China and other developing countries. The accompanying hygiene risks require our more attention.
Based on the Grossman model, this paper conducted an IV-Oprobit model to investigate whether and how intermittent water supply affect rural residents' self-rated health status. Our data came from "China Karst Rural Economic Survey (CKRS)", which covers 8 provinces and 641 villages in rural China's karst region.
We found that: (1) Intermittent water supply has adverse effects on the self-rated health status of rural residents. Compared with the rural residents under continuous water supply, the probability of "fair" health status under intermittent water supply significantly increases by 18.2%, while the probability of "excellent" significantly reduces by 58.8%. (2) Residents' water storage behavior and sanitary water habit are important mechanisms for intermittent water supply to affect residents' self-rated health status; (3) Intermittent water supply has a greater impact on the self-rated health of females and the groups with lower education levels. The results of our study have the following policy implications: relevant departments should make a rational plan about water supply methods and improve related supporting measures; we should strengthen health education for rural residents on water behavior to standardize their water storage and sanitary water behavior; government should enhance the pertinence of policy implementation and favor specific measures to specific populations.
随着经济社会的快速发展，生活用水量需求激增，水资源短缺问题日益突出，间歇性供水在我国农村及其他发展中国家的应用越来越普遍。随之而来的卫生风险值得我们给予更多关注。
本研究基于 Grossman 模型，利用 IV-Oprobit 模型，考察间歇性供水是否以及如何影响农村居民的自评健康状况。数据来源于“中国岩溶地区农村经济调查（CKRS）”，涵盖了中国岩溶地区 8 个省份的 641 个村庄。
结果表明：（1）间歇性供水对农村居民的自评健康状况有不利影响。与连续供水的农村居民相比，间歇性供水条件下“健康状况一般”的概率显著增加了 18.2%，而“健康状况极好”的概率则显著降低了 58.8%。（2）居民储水行为和卫生用水习惯是间歇性供水影响居民自评健康状况的重要机制；（3）间歇性供水对女性和受教育程度较低群体的自评健康状况影响更大。本研究的结果具有以下政策意义：相关部门应合理规划供水方式，并完善相关配套措施；应加强农村居民的用水卫生健康教育，规范储水和卫生用水行为；政府应增强政策实施的针对性，针对特定人群采取具体措施。
