ASSESSMENT OF LANDFILL MANAGEMENT PRACTICES AND THEIR EFFECTS ON ENVIRONMENTAL QUALITY AND HEALTH OUTCOMES AMONG COMMUNITIES AROUND OLUSOSUN LANDFILL, LAGOS STATE, NIGERIA

Abstract

Improper municipal solid waste management remains a persistent environmental and public health concern in rapidly expanding urban centres. This study assessed landfill management practices and their effects on environmental quality and health outcomes among communities surrounding Olusosun Landfill, Lagos State, Nigeria. A descriptive cross-sectional study design was adopted among 250 residents living within communities surrounding the landfill. Data were collected using a structured questionnaire and environmental observation checklist. Selected environmental indicators, including waste handling practices, drainage conditions, odour perception, air pollution experiences, and water quality concerns, were assessed. Health outcomes associated with landfill exposure were also documented among respondents. Findings showed that open waste accumulation (72.4%), irregular waste covering (64.8%), uncontrolled waste burning (58.0%), and inadequate leachate management (61.6%) were commonly reported landfill management challenges. Respiratory discomfort (46.8%), persistent cough (31.6%), skin irritation (24.4%), and gastrointestinal complaints (22.8%) were among the frequently reported health conditions. Significant associations were observed between proximity to the landfill and reported respiratory symptoms among residents (p < 0.05). The study concludes that existing landfill practices around Olusosun continue to influence environmental conditions and community health. Strengthening waste treatment systems, improving environmental monitoring, and promoting community-based waste management interventions are necessary to reduce exposure risks.