Study Finds Landfill Costs Strain Developing Megacities
Researchers modeled the household cost of sanitary landfilling across six developing megacities with over 100 million residents combined.
Updated on Nov. 3, 2026 in Geography
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A study applying an integrated framework to six developing megacities estimates that sanitary landfilling would cost households 1.2% to 2.0% of the minimum wage each year under full cost recovery. The required tipping fees range from 54 to 130 US dollars per tonne.
Why it matters
Open dumping remains a dominant municipal waste practice worldwide, and sanitary landfilling is a common step away from it. The findings suggest technically feasible landfills may be hard to sustain through direct household fees alone without cross-subsidization or public financing.
The model reports required tipping fees of 54 to 130 US dollars per tonne and household disposal costs of 1.2% to 2.0% of the minimum wage under full cost recovery. The 5th-95th-percentile uncertainty intervals run ±25% to ±30%, and the specific cities are not named in the source extraction.
The details
The study combines spatial landfill siting, engineering-based net-present-value modeling, and satellite-derived metropolitan GDP. It finds that landfill depth is the dominant engineering control on affordability, especially in high-rainfall systems, while cost allocation has greater leverage than any design parameter.
Big Picture
Open dumping remains a dominant municipal solid waste disposal practice across megacities, and sanitary landfilling is the usual step away from it. This analysis tests whether that transition is affordable for the households that would pay for it.
Landfill costs that households might face depend on how cities allocate expenses, which the study finds matters more than any single design choice. Municipal decisions on cost recovery and public financing will determine whether sanitary disposal is affordable for residents.
The takeaway
Affordability of waste infrastructure depends less on city wealth than on how costs are allocated. Cross-subsidies and public financing may be needed where households cannot carry full disposal costs.
Further reading
Explore more on Geography for context on how waste and land use shape urban systems.
Source note: This article includes information reported by Nature.
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