{"id":6471,"date":"2026-07-19T22:05:43","date_gmt":"2026-07-19T13:05:43","guid":{"rendered":"https:\/\/yuru-rekishi-sanpo.com\/en\/yumenoshima-garbage-island-tokyo-garbage-war\/"},"modified":"2026-07-19T22:05:43","modified_gmt":"2026-07-19T13:05:43","slug":"yumenoshima-garbage-island-tokyo-garbage-war","status":"publish","type":"post","link":"https:\/\/yuru-rekishi-sanpo.com\/en\/yumenoshima-garbage-island-tokyo-garbage-war\/","title":{"rendered":"Is Yumenoshima Made of Garbage? Tokyo\u2019s Garbage War Explained"},"content":{"rendered":"\n

At first glance, Yumenoshima looks like one of Tokyo\u2019s gentlest waterfront parks. Palm trees rise above broad lawns. Athletes use the sports grounds. Families visit the tropical greenhouse, while boats sit quietly in the marina beyond the canals.<\/p>\n\n\n\n

Yet beneath this green landscape lies one of the most revealing layers of modern Tokyo\u2019s history.<\/p>\n\n\n\n

Yes, much of Yumenoshima was created on reclaimed land and later used as Tokyo Bay Reclamation Area No. 14, where about 10.34 million tons of municipal waste were deposited over roughly 45 hectares from fiscal 1957 through fiscal 1966.<\/strong> But Yumenoshima was not originally planned as a garbage dump. Before becoming a landfill, it was connected to an unrealized airport project and a short-lived postwar bathing beach. Today, the buried waste is covered by soil and vegetation, and the island contains parkland, sports facilities, a greenhouse, an incineration plant and other public uses.<\/p>\n\n\n\n

It is also important not to confuse Yumenoshima with Tokyo\u2019s present disposal sites. After Area No. 14 closed, dumping moved to Area No. 15, now called Wakasu, and later to the Inner and Outer Central Breakwater landfills and the New Sea Surface Disposal Site. Yumenoshima is a former landfill, not the place where Tokyo simply dumps all of its garbage today.<\/p>\n\n\n\n

Before the Garbage: An Airport That Never Opened<\/h2>\n\n\n\n

The story began before the landfill era. In the late 1930s, Tokyo City started reclaiming part of Tokyo Bay for an airfield. The new land was identified administratively as Reclamation Area No. 14. Work was disrupted during the war, and the airport was never completed.<\/p>\n\n\n\n

This first stage matters because it corrects a common misconception: Yumenoshima was not conceived from the beginning as an island made from household refuse. It was an artificial land project whose intended purpose changed as Tokyo\u2019s needs changed.<\/p>\n\n\n\n

Tokyo\u2019s Short-Lived \u201cHawaii\u201d<\/h2>\n\n\n\n

After the war, the reclaimed shoreline took on a very different identity. A bathing beach opened in 1947, and the hopeful name \u201cYumenoshima,\u201d meaning \u201cDream Island,\u201d became associated with the area. For residents of a city still recovering from wartime destruction, the beach represented leisure, openness and a glimpse of resort life close to home.<\/p>\n\n\n\n

The beach did not last. Water quality deteriorated and the facility closed. The contrast between the name \u201cDream Island\u201d and what came next is one of the sharpest turns in Tokyo\u2019s urban history: a place marketed as recreation would soon become a symbol of the city\u2019s waste crisis.<\/p>\n\n\n\n

Why Tokyo Began Dumping Garbage Here in 1957<\/h2>\n\n\n\n

Tokyo\u2019s population and consumption rose rapidly during the high-growth decades after the war. More households, more packaging and more mass-produced goods meant more waste. Incineration capacity did not keep pace. Large amounts of refuse, including food waste, were therefore carried without adequate burning or treatment to waterfront disposal areas.<\/p>\n\n\n\n

From fiscal 1957, Yumenoshima became the city\u2019s Area No. 14 disposal site. Trucks arrived in large numbers through Koto, the eastern ward that already hosted much of Tokyo\u2019s heavy infrastructure. Waste was spread, compacted and covered, but the system was crude by present standards. Wet organic refuse attracted insects and rats. Liquid leaked from trucks and loads. Roads filled with collection vehicles serving neighborhoods far beyond Koto.<\/p>\n\n\n\n

What Koto Residents Lived Through<\/h2>\n\n\n\n

The burden was not limited to the landfill itself. For Koto residents, Tokyo\u2019s waste passed through daily life. Garbage trucks caused congestion and added traffic danger. Refuse and dirty liquid fell onto roads. Odors spread through nearby communities. Flies and rats moved beyond the disposal site.<\/p>\n\n\n\n

The political issue was therefore larger than sanitation. Koto was receiving garbage generated across Tokyo\u2019s other wards while many of those wards resisted the construction of local incineration plants. Residents increasingly asked why one area should bear the environmental and social cost of a citywide system.<\/p>\n\n\n\n

This sense of unequal sacrifice later became central to the Tokyo Garbage War. Koto\u2019s position was not merely \u201ckeep garbage away.\u201d It was a demand that every ward accept a fairer share of responsibility for treating the waste its residents produced.<\/p>\n\n\n\n

The 1965 Fly Disaster<\/h2>\n\n\n\n

The crisis reached a notorious peak in 1965. Huge numbers of flies bred in the exposed and decomposing waste. Official histories record that the infestation continued for months and disrupted schools and households in nearby areas. Yumenoshima was described at the time as a \u201cfly heaven,\u201d a historical label that should not be mistaken for the island\u2019s condition today.<\/p>\n\n\n\n

Authorities responded with extraordinary measures. Insecticide was sprayed from helicopters. Oil was used in an attempt to burn sections of the refuse in what became known as the \u201cscorched-earth operation.\u201d Poison bait was deployed against rats. These actions reduced an emergency, but they also revealed how far Tokyo had allowed disposal policy to fall behind urban growth.<\/p>\n\n\n\n

The fly outbreak was not simply a freak natural event. It resulted from a treatment system that deposited large volumes of organic waste without sufficient incineration, sealing or control. In that sense, the insects exposed a failure of urban planning.<\/p>\n\n\n\n

Yumenoshima Closed, but the Burden Moved Next Door<\/h2>\n\n\n\n

Disposal at Area No. 14 ended in fiscal 1966, with official chronologies placing the end in March 1967. Yet this did not end Koto\u2019s waste burden. Tokyo shifted dumping to Area No. 15, then commonly called \u201cNew Yumenoshima\u201d and now known as Wakasu.<\/p>\n\n\n\n

Later disposal moved farther south to the Inner Central Breakwater, the Outer Central Breakwater and the New Sea Surface Disposal Site. These are separate reclaimed areas with different construction periods and functions. Calling all of them \u201cYumenoshima\u201d erases both geography and history.<\/p>\n\n\n\n

\"Aerial
Yumenoshima in 1989. Made based on National Land Image Information (Color Aerial Photographs), Ministry of Land, Infrastructure, Transport and Tourism.<\/figcaption><\/figure>\n\n\n\n

Why the Tokyo \u201cGarbage War\u201d Began<\/h2>\n\n\n\n

On September 28, 1971, Tokyo Governor Ryokichi Minobe publicly declared a \u201cgarbage war.\u201d The word \u201cwar\u201d was metaphorical, not military. It described a citywide political conflict over who would host waste facilities, how decisions would be made and how long Koto would be expected to accept the consequences of other wards\u2019 resistance.<\/p>\n\n\n\n

The conflict involved the Tokyo Metropolitan Government, the 23 special wards, local assemblies, residents\u2019 groups and the rapidly expanding waste stream of the metropolis itself. Koto demanded a more equitable system. Tokyo promoted the principle that wards should process their own combustible waste locally, mainly through new incineration plants.<\/p>\n\n\n\n

That policy sounded straightforward, but building plants in densely populated neighborhoods was politically difficult. Residents feared air pollution, odors, traffic and the loss of local control. The most famous confrontation developed in Takaido, Suginami.<\/p>\n\n\n\n

Suginami\u2019s Side: A Plant Announced by Flyer<\/h2>\n\n\n\n

According to Suginami\u2019s official history, local residents learned of the proposed Takaido incineration plant on November 14, 1966, through a newspaper insert. That method of announcement became a symbol of top-down administration.<\/p>\n\n\n\n

Residents objected not only to the existence of a waste facility but also to the decision-making process. They raised concerns about the lack of prior consultation, proximity to schools and kindergartens, pollution risks, traffic and surveying work. Opposition hardened because the plan appeared to have been settled before meaningful public discussion began.<\/p>\n\n\n\n

Reducing this movement to selfish \u201cnot in my backyard\u201d politics misses an important part of the story. The protests helped force greater attention to environmental standards, disclosure and participation. At the same time, the delay in creating local treatment capacity prolonged the concentration of waste traffic and disposal burdens in Koto. Both facts must be held together.<\/p>\n\n\n\n

When Koto Blocked Suginami\u2019s Garbage Trucks<\/h2>\n\n\n\n

Koto escalated its protest by stopping trucks carrying Suginami\u2019s garbage from entering disposal facilities. The first blockade took place on December 22, 1972. A second followed on May 22, 1973. The action made a distant policy dispute immediate: if a ward would not accept a treatment plant, where should its garbage go?<\/p>\n\n\n\n

On May 23, 1973, the metropolitan government again formally selected Takaido as the construction site. Negotiations continued, and a settlement was reached on November 25, 1974. Construction of the main Suginami plant began in 1979. The first plant was completed in 1982 and entered full operation in January 1983.<\/p>\n\n\n\n

The settlement did not prove that one side had been entirely right. Koto\u2019s blockade exposed the injustice of transferring metropolitan waste costs to one area. Suginami\u2019s movement exposed the danger of imposing major infrastructure without credible consultation. The eventual plant emerged from conflict, technical redesign and a more participatory process.<\/p>\n\n\n\n

What Changed After the Garbage War<\/h2>\n\n\n\n

Tokyo gradually moved away from directly burying large quantities of untreated combustible waste. More incineration plants were built across the 23 wards. Burning reduced waste volume, and the remaining ash and non-combustible residues were sent to final disposal sites in Tokyo Bay.<\/p>\n\n\n\n

Modern plants also recover energy. Heat can be used for electricity generation and supplied to nearby public facilities. Environmental monitoring, public reporting and community agreements became more important, partly because the conflicts of the Garbage War showed that technical projects could not be separated from public trust.<\/p>\n\n\n\n

\"Shin-Koto
Shin-Koto Incineration Plant at Yumenoshima. Photo by Asanagi, via Wikimedia Commons, CC0.<\/figcaption><\/figure>\n\n\n\n

Today, waste treatment for the 23 wards is coordinated through the Clean Authority of TOKYO, while ward governments manage collection and recycling functions. Combustible waste is incinerated, but incineration does not make the waste problem disappear. Ash still requires disposal space, recycling has limits, combustion produces carbon emissions, and Tokyo Bay\u2019s final disposal capacity is finite.<\/p>\n\n\n\n

A Park Created Through Political Settlement<\/h2>\n\n\n\n

The former landfill was gradually transformed. The Koto Incineration Plant was completed in 1974. \u201cYumenoshima\u201d became the official place name in 1975. Yumenoshima Park opened in 1978, and the Yumenoshima Tropical Greenhouse followed in 1988.<\/p>\n\n\n\n

Sports grounds, a swimming facility, gymnasium, parkland and other public amenities were developed in connection with Koto\u2019s acceptance of waste infrastructure. Such projects were often described as return facilities: benefits provided to a community hosting an undesirable metropolitan facility.<\/p>\n\n\n\n

The present Shin-Koto Incineration Plant is not the same building as the 1974 Koto plant. The current facility belongs to a later generation of waste infrastructure. Its heat is used by nearby facilities, including the greenhouse, linking present-day recreation directly to the island\u2019s continuing role in Tokyo\u2019s sanitation system.<\/p>\n\n\n\n

\"Glass
Yumenoshima Tropical Greenhouse Dome. Photo by Wiiii, via Wikimedia Commons, CC BY-SA 3.0.<\/figcaption><\/figure>\n\n\n\n

Yumenoshima Today<\/h2>\n\n\n\n

Yumenoshima is now a layered urban landscape rather than a visible dump. Yumenoshima Park contains lawns, wooded areas and sports facilities. The tropical greenhouse interprets plant life in a set of glass domes. The Daigo Fukuryu Maru Exhibition Hall preserves a fishing vessel affected by the 1954 Bikini Atoll hydrogen bomb test, adding another major story of postwar history to the island.<\/p>\n\n\n\n

The Shin-Koto Incineration Plant, the Tokyo Yumenoshima Marina, canals, bridges and nearby reclaimed districts show that the island remains part of Tokyo\u2019s working waterfront. Its peaceful appearance does not erase the past. Instead, the park sits directly on top of the material consequences of metropolitan growth.<\/p>\n\n\n\n

\"Boats
Tokyo Yumenoshima Marina. Photo by \u591a\u6469\u306b\u6687\u4eba, via Wikimedia Commons, CC BY 3.0.<\/figcaption><\/figure>\n\n\n\n

What to Notice When You Visit<\/h2>\n\n\n\n

From Shin-Kiba Station, the approach to Yumenoshima is short, but it is worth paying attention to the geography. You cross into a district surrounded by canals rather than a natural island framed by open sea. Bridges, embankments and broad roads reveal the engineered character of the area.<\/p>\n\n\n\n