World Health Day

Non-degradable waste, especially plastics and synthetic materials, is increasingly prevalent in both urban and rural areas across Africa. Besides environmental concerns, it poses significant public health risks that are closely linked to challenges in infrastructure, urbanisation, and service delivery.

Non-degradable materials are those that do not break down easily through natural processes. Common examples include plastic bags, bottles, food packaging, styrofoam containers, and electronic waste components. As consumption patterns change and populations grow, the volume of such waste regularly exceeds the capacity of existing waste treatment systems.

A major concern is the impact on water systems. Inconsistent collection and improper disposal often result in plastic waste accumulating in drainage channels, rivers, and waterways. Blocked drainage causes stagnant water, increasing the risk of contamination. Communities relying on untreated or minimally treated water are especially vulnerable to health issues such as diarrhoeal diseases.

Non-degradable waste also creates conditions that support the spread of vector-borne diseases. Discarded containers and plastics collect rainwater, providing mosquito breeding sites. In areas where diseases like malaria are present, these conditions can sustain transmission by increasing breeding habitats.

Air quality remains another area of concern. In settings where formal waste collection is limited, open burning is sometimes used for disposal. Burning plastics and other synthetic materials releases a range of harmful pollutants, including fine particulate matter and toxic compounds. Prolonged exposure to such emissions is associated with respiratory conditions, including asthma and other chronic lung diseases, as well as eye and skin irritation. These effects may be more noticeable among children, older adults, and people with pre-existing health conditions.

Non-degradable waste also affects soil quality and food systems. Over time, plastics can break down into smaller particles, sometimes referred to as microplastics, which can enter the soil. While research is still developing, there is growing concern about how these particles may affect agricultural productivity and whether they may enter the food chain through crops or livestock. In addition, waste accumulation in agricultural areas can disrupt land use and degrade the environment in which food is produced.

Physical safety risks should also be considered. Improperly disposed waste can lead to injuries from sharp objects or hazardous materials, particularly in areas where waste is handled informally. Flooding caused by blocked drainage systems can further create unsafe living conditions, especially in densely populated settlements.

These health impacts are closely linked to broader systemic factors. Rapid urbanisation, changing consumption patterns, and limited waste management infrastructure all contribute to the growing presence of non-degradable waste. In many cases, municipal systems are under pressure, and service coverage may not extend to all areas, particularly informal settlements. At the same time, regulatory frameworks and enforcement capacity vary, affecting how waste is managed at different levels.

Currently, non-degradable waste represents a growing concern that sits at the intersection of environmental management and public health. Its effects are shaped by both the materials themselves and by how systems respond to their accumulation. Addressing these challenges requires approaches that account for both waste management systems and their connections to public health. Improving collection, disposal, and recycling practices, alongside public awareness and practical alternatives to single-use materials, can help reduce the associated risks.