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Whole-system analysis reveals high greenhouse-gas emissions from citywide sanitation in Kampala, Uganda

Environmental Studies and Forestry

Whole-system analysis reveals high greenhouse-gas emissions from citywide sanitation in Kampala, Uganda

J. Johnson, F. Zakaria, et al.

This study reveals startling insights into Kampala, Uganda's sanitation system, discovering that it generates a staggering 189 kt CO2e annually, potentially surpassing half of the city's total emissions. A comprehensive breakdown uncovers where these emissions originate, emphasizing the urgency for refined global sanitation emission estimates. This groundbreaking research was conducted by Jake Johnson, Fiona Zakaria, Allan G. Nkurunziza, Celia Way, Miller A. Camargo-Valero, and Barbara Evans.

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Playback language: English
Abstract
Global greenhouse gas emission estimates often neglect the intricate service chain in rapidly developing cities of low- and middle-income countries. This study conducts a comprehensive analysis of emissions from all stages of Kampala, Uganda's sanitation system. High emissions stem from prolonged faecal waste storage (49%), direct discharge into drains (4%), illegal dumping (2%), sewer leakage (6%), wastewater bypassing treatment (7%), and uncollected methane from treatment plants (31%). Kampala's sanitation generates 189 kt CO2e annually, potentially exceeding half of the city's total emissions. The study highlights the need for refined global sanitation emission estimates.
Publisher
Communications Earth & Environment
Published On
Apr 05, 2022
Authors
Jake Johnson, Fiona Zakaria, Allan G. Nkurunziza, Celia Way, Miller A. Camargo-Valero, Barbara Evans
Tags
greenhouse gas emissions
sanitation system
Kampala
faecal waste
methane emissions
wastewater treatment
low- and middle-income countries

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