The Haritha Karma Sena, a community-driven project that encourages decentralized waste collection and sustainable household waste practices, has made a substantial contribution to Kerala’s Green Revolution in waste management. This study examines the role of Haritha Karma Sena (HKS) in advancing sustainable household waste management in Valanchery Municipality, Kerala. The municipality, with 43,522 residents and 8,472 households, generates nearly 24 tons of solid waste daily, highlighting the urgent need for community-based solutions. Using a descriptive research design, primary data were collected from 100 households through a structured questionnaire addressing waste collection, segregation practices, interactions with HKS workers, and perceptions of effectiveness. Respondents were chosen through convenience sampling method, while secondary data were obtained from municipal records and prior studies. Descriptive statistics and one-way ANOVA were employed for analysis, supported by charts and tables. Although there are still gaps in awareness and regular household involvement, the results show that Haritha Karma Sena has increased trash segregation, collection frequency, and community participation. In addition to positioning HKS as a scalable model for sustainable waste management in Kerala and abroad, the study highlights the importance of household-level observations.