A new World Health Organization (WHO) report, Throwing away our health: the impacts of solid waste on human health – evidence, knowledge gaps and health sector responses, warns that poorly managed solid waste is driving a public health crisis and calls for urgent action to protect people and the environments they live in.
Globally, the volume of municipal solid waste is growing at an unprecedented rate. Yet, many countries still lack the systems and resources to manage this waste safely.
“Solid waste reflects how our societies produce and consume, and how we treat people and the environment in the process,” said Dr Ruediger Krech, Director a.i., Department of Environment, Climate Change, One Health & Migration at the World Health Organization. “If we continue to treat waste as an afterthought, we will lock in avoidable disease, climate pollution and deep social inequities. This report is a clear call to put health and equity at the centre of how we design, manage and ultimately reduce waste.”
The report summarizes evidence on how solid waste – especially municipal solid waste – affects health through polluted air, water, soil and food. When waste is not collected, or is dumped, burned or not poorly treated, it can release hazardous chemicals, contaminate drinking-water sources and create breeding grounds for insects and rodents.
Communities underserved by waste management services, those living near dumpsites and poorly managed landfills and incinerators, children and pregnant women, as well as waste workers – particularly those working informally – face the greatest risks.
For the water, sanitation and hygiene (WASH) community, the report underlines that safe management of municipal and health care waste is integral to safely managed, climate-resilient systems.
A large share of municipal solid waste is still not collected or is disposed of in uncontrolled conditions, including open dumpsites and open burning. These practices damage ecosystems, contribute to climate change and undermine efforts to build healthy cities.
When waste is properly managed, however, it can become a resource – generating energy and creating green jobs. The report calls for a coordinated, multisectoral response grounded in the waste hierarchy: preventing waste where possible, then reducing, reusing and recycling, with safe recovery and disposal.
Key actions for governments and partners include reducing waste generation at source; expanding affordable and reliable waste collection services, especially in underserved communities; improving control at recovery and disposal facilities; and eliminating open dumping and burning, including hazardous waste.
The new report identifies a central role for the health sector in addressing solid waste as a public health threat. The health sector can prevent and minimize health-care waste at source, improve segregation and safe treatment, invest in cleaner climate-resilient technologies, and advocate for health-protective policies and standards. The report also encourages more surveillance, research and biomonitoring to strengthen the evidence base, and promotes social protection and inclusion of informal waste workers.
“This report gives countries and health authorities a very practical agenda,” said Mr Bruce Gordon, Head, Water, Sanitation, Hygiene and Health Unit, WHO. “Health ministries can start now by ensuring safe management of health-care waste, developing strong occupational health programmes for waste workers, and working with municipalities to reduce health risks from solid waste by closing open dumps and burn sites and gradually improving towards safe services. These concrete steps save lives today and will make cities cleaner and healthier in the future.