This study quantitatively examines the sociodemographic determinants, knowledge levels, attitudes, and actual waste segregation practices (WSP) at the source among residents of Mukim 6, Seberang Perai Utara, utilizing a cross-sectional survey design (N=138). Female respondents, particularly housewives, were found to be significantly more likely to participate, reflecting their greater household availability and community involvement. The dominant cohort was aged 31 to 40 and held a minimum of a diploma or bachelor’s degree (44.9%), statistically indicating that higher age and educational attainment positively influence environmental awareness and engagement. While 90.6% of the respondents demonstrated a general understanding of WSP, critical knowledge gaps persisted regarding specific national solid waste management regulations, council responsibilities, and the specialized management of hazardous and organic waste streams. Attitudes were overwhelmingly positive, with many acknowledging waste segregation as a vital shared civic responsibility. However, consistent practice was significantly limited by perceived barriers such as time constraints, insufficient dedicated infrastructural facilities, and weak community support mechanisms. Although 85.5% reported engaging in some form of WSP, only a small proportion practiced it consistently (18.8%), and recycling primarily focused on common materials (paper, plastic) rather than less-frequently segregated items such as electronics, metals, or textiles. The findings highlight a critical 'intention-to-behavior' gap, necessitating targeted educational interventions, infrastructure improvements, stricter enforcement of policy mandates, and stronger community-led initiatives to translate awareness into sustained behavior, thereby supporting more effective and sustainable municipal solid waste management.