Department of Water Management, Delft University of Technology, 2628CD Delft, The Netherlands.
Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, 2611 AX Delft, The Netherlands.
Int J Environ Res Public Health. 2020 Mar 25;17(7):2172. doi: 10.3390/ijerph17072172.
Accurate assessments of drinking water quality, household hygenic practices, and the mindset of the consumers are critical for developing effective water intervention strategies. This paper presents a microbial quality assessment of 512 samples from household water storage containers and 167 samples from points of collection (POC) in remote rural communities in the hilly area of western Nepal. We found that 81% of the stored drinking water samples (mean log of all samples = 1.16 colony-forming units (CFU)/100 mL, standard deviation (SD) = 0.84) and 68% of the POC samples (mean log of all samples = 0.57 CFU/100 mL, SD = 0.86) had detectable . The quality of stored water was significantly correlated with the quality at the POC, with the majority (63%) of paired samples showing a deterioration in quality post-collection. Locally applied household water treatment (HWT) methods did not effectively improve microbial water quality. Among all household sanitary inspection questions, only the presence of livestock near the water storage container was significantly correlated with its microbial contamination. Households' perceptions of their drinking water quality were mostly influenced by the water's visual appearance, and these perceptions in general motivated their use of HWT. Improving water quality within the distribution network and promoting safer water handling practices are proposed to reduce the health risk due to consumption of contaminated water in this setting.
准确评估饮用水水质、家庭卫生习惯和消费者的心态对于制定有效的水干预策略至关重要。本文对尼泊尔西部丘陵地区偏远农村社区的 512 个家庭储水容器样本和 167 个采集点(POC)样本进行了微生物质量评估。我们发现,81%的储水饮用样本(所有样本的平均对数为 1.16 菌落形成单位(CFU)/100 毫升,标准差(SD)=0.84)和 68%的 POC 样本(所有样本的平均对数为 0.57 CFU/100 毫升,SD = 0.86)可检测到 。储水的质量与 POC 的质量显著相关,大多数(63%)配对样本在采集后质量恶化。当地应用的家庭水处理(HWT)方法并没有有效地改善微生物水质。在所有家庭卫生检查问题中,只有储水容器附近存在牲畜与微生物污染显著相关。家庭对其饮用水质量的看法主要受水的外观影响,这些看法通常促使他们使用 HWT。在该环境中,建议改善配水网络中的水质并促进更安全的用水处理方式,以降低因饮用受污染水而带来的健康风险。