South Korea’s capital has initiated a unique, 100-day waste reduction challenge involving 354 dedicated residents. The civic initiative aims to demonstrate that Seoul is taking responsibility for its own household garbage and is willing to take meaningful steps toward radical waste reduction. This citizen-led campaign comes in response to a newly implemented, strict landfill ban and growing public dissatisfaction, as the capital is currently forced to export its waste to other regions due to severe infrastructural shortages.
According to reports from The Korea Times, the pilot project launched by the Seoul metropolitan government is designed to spark a broader social movement. Recently, the capital has faced mounting criticism for shifting the burden of its trash onto provincial regions.
Why Exactly 354 Participants? The Numbers Behind Seoul’s Waste
The selection of 354 participants is not a random figure: organizers chose this number to reflect the capital’s daily average household waste generation per capita, which stands at exactly 354 grams. During the 100-day project, which is scheduled to run until June 10, the volunteers are provided with small electronic scales and asked to weigh everything they throw away once a week.
Participants must follow a strict, data-driven protocol:
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They separately weigh the general waste that goes into standard, volume-based “pay-as-you-throw” garbage bags.
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In addition, they document the weight of seven different types of recyclable materials—paper, plastic, vinyl, metal cans, glass bottles, and styrofoam—and upload the data to an online platform.
In the first phase of the challenge, residents establish their typical waste generation baseline. Following this, they will consciously attempt to reduce this volume over 10 weeks (rounds), continuously tracking their progress and results.
The Underlying Crisis: Full Landfills and Stricter Regulations
This “waste diet” is not merely an educational green campaign; it is a necessary measure. On January 1, 2026, a law banning the direct landfilling of mixed household waste came into effect across the greater capital region (Seoul, Incheon, and Gyeonggi Province).
As a direct result, the influx of waste at the Sudokwon Landfill in Incheon—which previously received more than 2,000 tons of household trash daily—has plummeted to near zero. Currently, only incinerator ash and non-recyclable residue left over after sorting are permitted to be buried at the site.
Consequently, the capital is forced to incinerate or recycle a much larger portion of its garbage. However, local infrastructure has failed to keep pace with the new regulations. The city has long struggled to find suitable locations for new waste-to-energy plants. As a workaround, Seoul currently sends a portion of its waste to private incinerators, sometimes as far away as the Chungcheong region. This practice has sparked significant outrage among residents in the receiving areas, who argue it violates the principle of proximity in waste management.
Infrastructural Lag and Civic Responsibility
Addressing the challenge, Noh Su-im, director of the climate and environment policy division at the Seoul Metropolitan Government, stated:
“We must admit that infrastructure has not kept pace with demand. So, we need to at least show that we are making maximum efforts to reduce our waste ourselves to minimize the harm we cause.”
The official added that despite the complex, multi-category sorting protocol, the public reception of the program has been “extremely positive” so far. Son Young-hye, a member of the Green Seoul Citizens’ Committee, noted that the project was launched at a critical moment when the landfill ban demands immediate “societal-level participation,” expressing hope that the experiment will help spread best practices throughout the city.
Rewards for the Most Dedicated Eco-Citizens
At the conclusion of the 100-day challenge, the city will reward 10 outstanding participants, who will receive official recognition from Seoul Mayor Oh Se-hoon:
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7 awards will be given to those who achieve the highest reduction rate in general waste disposed of in standard garbage bags over the 100 days.
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3 awards will be presented to those who produce the absolute lowest amount of trash during the entire period.
Based on their reduction rates, the winners will also receive “eco-mileage” points, which can be used to pay local taxes and utility bills.
Official Source and Reference:
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The Korea Times (March 4, 2026): 354 Seoul residents take on 100-day challenge to reduce household waste