Source segregation, the first important step for effective solid waste management, is practised by a handful of organizations in limited areas in Nepal. The inadequacy of source segregation and ineffective collection system in Nepal have led to maximum waste reaching the landfill site. Though several researchers have studied the role of stakeholders and the importance of youths in the waste management sector, there is a paucity of studies on the role of youths, particularly in waste segregation in Nepal. In this regard, this study was conducted to understand the at-source household waste segregation practices by youths in Nepal. The study adopted the snowball sampling technique. A structured survey questionnaire which included information on the sociodemographic status of the respondents, placement of bins, segregation practices, and satisfaction with the waste collection provider was used to elicit information from 522 youths. It was found that almost half (49.2%) of the respondents had installed two dustbins in their kitchen with 80.3% of respondents claiming to practice source segregation in their houses. The majority (75.1%) of participants were ready to pay more for improved solid waste management in their area. Also, 75.8% of respondents declared that everyone is responsible for solid waste management with fewer than 14.8% and 9.4%, stating that waste management should be the responsibility of the government and waste management service provider, respectively. The gender and source segregation was statistically significant with a
p
value of 0.007 (<0.05). However, the likelihood ratio significance showed no association between the level of education and the practice of source segregation. Hence, the source segregation practice of household solid waste was found to be satisfactory among the youths of Nepal. Thus, there should be a proper monitoring mechanism to ensure that household waste gets collected in a segregated form causing less burden on landfills.