On the basis of information provided by the Department of alcoholism Water Supply and Sewerage, we chose for this study the largest DWS schemes in the Kavre and Baglung districts (Table 1). The number of surveyed households was ground on the project reports prepared by the DWS installation agencies. A sample size of 88 respondents was selected from a fundamental of 771 market-center households. Similarly, a sample size of 117 respondents was drawn from a fundamental of 1,327 rude village households,. This sampling methodology assumed that the expected regularize of occurrence was not less than 90% at the 95% confidence direct with a precision level of 3%. Following Arkin and Colton (1963), the sample size (based on a total of 2,098 households) was computed from the following formula.
 | Â
(5)|
Where,
n| =| sample size|
N| =| total number of households|
Z| =| confidence level (at 95% level Z = 1.96)|
p | =| estimated population proportion (0.5, this maximizes the sample size)|
d| =| error limit of 5% (0.
05)|
Data Collection
Prior to info collection, the lead author held a meeting with selected local residents, lodge leaders, officials from the district water-supply offices, representatives from local NGOs, contact persons, and members of the village-development committees (VDC). During the session the villages to be include in the survey were identified and this determination ensured the cooperation of relevant individuals from the various(prenominal) villages and communities by means ofout the field-survey period. This initial meeting served as a confidence-building measure. Because they were advantageously informed of the research goals, villagers and WUC members involved themselves actively in participatory rural appraisal sessions, discussions, and WTP workshops. The four locally hired enumerators visited households through random sampling and interviewed either household heads or women in charge of household finances.
Data Analysis
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