Helena Joyce
Japan has long been associated with rapid technological and industrial growth, but this progress has come at a cost to the environment. Post-World War II, Japan's swift industrialisation led to severe environmental degradation, with incidents such as the Minamata disease crisis in the 1960s, which was caused by factory runoff. While Japan has made significant strides in reducing pollution since then, it continues to face challenges in balancing industrial activities with environmental conservation. Today, air pollution from factories and other sources remains a serious issue, contributing to tens of thousands of deaths annually and causing a public health crisis.
| Characteristics | Values |
|---|---|
| Post-World War II industrialisation | Severe environmental degradation |
| First pollution case | Ashio Copper Mine |
| Diseases caused by pollution | Minamata disease, Yokkaichi asthma |
| Improvement in freshwater systems | 90% drop in water pollutant loads since the 1950s and 1960s |
| Water quality standards | 95% of rivers, 58% of lakes meet standards |
| Main causes of water pollution | Industrial discharge, agricultural runoff, untreated domestic waste |
| Air pollution | Nitrogen oxides, sulphur oxides, volatile organic compounds |
| Air pollution sources | Factories, thermal power plants, vehicles, aircraft |
| Air pollution-related deaths | 42,000 in 2019 |
| Plastic waste | Second-highest per capita plastic waste emissions, only 21% recycled |
| Microplastics in coastal waters | 27 times the global average |
| Coal-fired electricity | Japan is the world's fourth-largest producer |
| Fossil fuel combustion | Leading cause of air pollution |
| Greenhouse gas emissions | Decreased over the past decade |
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What You'll Learn
Japan's air pollution
Japan's air quality is causing a serious public health crisis, with tens of thousands of annual deaths. In 2019, more than 42,000 deaths were linked to air pollution in the country, making Japan a country with a high death rate due to polluted air.
The leading cause of Japan's air pollution is fossil fuel combustion, which is produced by power plants, factories, industrial facilities, and automobiles. The country's swift industrialisation post-World War II led to severe environmental degradation, with incidents like the Minamata disease in the 1960s. During the 1950s and 1960s, over 40,000 people were affected by water pollution-related diseases caused by factory runoff.
Today, the two main sources of air pollution in Japan are fixed sources, such as factories and business establishments, and mobile sources, such as automobiles and aircraft. Nitrogen oxides (NOx) emitted from automobiles are a serious cause of air pollution, and national measures such as automobile emission regulations and the promotion of low-emission vehicles are being implemented. Sulphur oxides (SOx) and nitrogen oxides (NOx) are still emitted from factories and thermal power plants, and each company is obliged to have a dust collector installed to separate and remove these pollutants.
Japan is the world's fourth-largest producer of coal-fired electricity, with 92 operational coal-fired power plants. The transportation sector, mainly powered by petrol or diesel combustion engines, is also a major source of air pollution, particularly in highly populated urban areas. The most common and deadly pollutant is PM2.5, which has been linked to illness and premature death, with concentrations in Japan 1.8 times higher than the WHO air quality guideline as of 2022.
While Japan has introduced various regulations and standards to improve air quality, such as tightening automobile emission regulations, the current environmental standards are still considered insufficient. The country is also facing criticism for being too slow to abandon fossil fuels, with the government promoting "clean coal" technologies and refusing to endorse the 2030 coal phase-out deadline.
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Water pollution
Japan's rapid industrialisation and technological growth since World War II have had a significant impact on the country's environment, and water pollution has been a pressing issue. The construction of factories in waterfront areas to increase production efficiency led to the concentration of pollutant sources, severely degrading Japan's freshwater systems. During the economic growth of the 1950s and 1960s, over 40,000 people suffered from water pollution-related diseases caused by factory runoff. This crisis spurred the enactment of the Basic Law for Environmental Pollution Control, which aimed to comprehensively address pollution control measures.
While Japan has made remarkable improvements in water quality in recent years, primarily due to stricter regulations on industrial wastewater, challenges remain. Industrial discharge, agricultural runoff, and untreated domestic waste continue to be significant sources of water pollution. Heavy metals, industrial chemicals, and plastic waste, including microplastics, are among the pollutants affecting Japan's water bodies.
The Water Pollution Control Law, enacted by the Ministry of the Environment, aims to prevent water pollution in public water areas, including rivers, lakes, ports, and coastal seas. The law regulates effluent discharged by factories and establishes the responsibility of proprietors to compensate for damage caused by polluted water or wastewater. Despite these efforts, Japan's water pollution challenges persist, particularly in urban rivers and enclosed water areas.
Japan's high plastic consumption and low recycling rate contribute to ocean plastic pollution, with microplastic rates in coastal waters significantly higher than the global average. This has profound environmental implications, affecting marine life, coral reefs, and potentially threatening food safety. Additionally, plastic waste mismanagement and rain events contribute to the washing of plastic into the ocean, exacerbating the issue.
To address these issues, Japan has implemented various measures, including tightening regulations on industrial wastewater and promoting the use of low-emission vehicles. While these efforts have led to a significant reduction in heavy metal pollution and a decrease in some air pollutants, Japan continues to face modern pollution challenges, striving to balance industrial activities with environmental conservation.
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Plastic pollution
Japan is one of the largest producers of plastic products, with plastic packaging and single-use plastic products being the most common. The average person in Japan uses up to 450 plastic bags per year, totalling 30 billion plastic bags annually. This, along with the popularity of takeaway food boxes and drinks in PET bottles, has resulted in plastic waste pollution becoming a major environmental issue, threatening the health of both humans and animals as harmful chemicals from microplastics enter the food chain.
In 2017, Japan generated 9 million tons of plastic waste, with about 10% of that being shipped to China. However, China banned plastic waste imports that year, causing Japan to shift its plastic waste exports to other countries such as Indonesia and Vietnam. Japan has a relatively high plastic recycling rate, with almost 85% of PET bottles being recycled. However, it has been noted that a large portion of Japan's plastic waste is "thermally recycled", meaning it is burned, which contributes to air pollution and global warming.
Japan has taken some steps to reduce plastic waste, such as prohibiting retail shops from distributing free plastic bags and encouraging the use of reusable containers. The government has also launched initiatives like the 3R initiative (Reduce, Reuse, Recycle) and the Resource Circulation Strategy for Plastics. Additionally, scientists in Japan have developed a type of plastic that dissolves in seawater within hours, which could help address the growing plastic waste crisis.
However, Japan has faced criticism for its lack of transparency regarding plastic waste exports and the impact on importing countries. Greenpeace Japan has urged the government to adopt measures to curb plastic usage and move towards a global plastics treaty. Japan has also declined to sign some international agreements, such as the G7 Pact to reduce single-use plastics, which has concerned environmentalists. Overall, while Japan has made some progress in addressing plastic pollution, there is still much room for improvement, and the country needs to prioritize reducing plastic production and consumption.
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Fossil fuel combustion
Japan's economy is heavily reliant on fossil fuels, which generate almost 85% of its energy consumption. The combustion of fossil fuels like coal, oil, and natural gas releases air pollutants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs), which contribute to the formation of harmful ozone (O3). This has led to severe environmental degradation and pollution-related health issues, including respiratory diseases such as asthma and chronic bronchitis.
The combustion of fossil fuels in power plants, industrial facilities, and automobiles is a significant contributor to air pollution in Japan. The country's energy conversion sector, dominated by natural gas and coal, is the main polluting sector, causing high levels of carbon dioxide emissions. Additionally, the transportation sector, mainly powered by petrol or diesel combustion engines, is also a major source of air pollution, especially in highly populated urban areas.
To address the issue of fossil fuel combustion and air pollution, Japan has implemented various measures and regulations. The government introduced the K-value regulation, requiring industries to install taller smokestacks to dilute pollutant concentrations. Regulations were also put in place to control SO2 and dust emissions by limiting the sulfur content of fossil fuels. Japan has also enacted laws such as the Basic Law for Environmental Pollution Control and the Water Pollution Control Law to manage pollution and waste.
However, despite these efforts, Japan has been criticised for not transitioning more rapidly to renewable energy sources. The country's Green Transformation (GX) Basic Policy has been deemed insufficient by the Climate Action Tracker (CAT), lacking concrete GHG reduction targets and promoting "clean coal" technologies. A 2018 flagship study highlighted the potential benefits of a transition to 100% renewable energy by 2050, including significant cost savings and the creation of almost one million new jobs.
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Pollution-related health issues
Japan has a long history of pollution-related health issues. Post-World War II, Japan's swift industrialisation led to severe environmental degradation, with pollutants being emitted from factories and power plants. This resulted in the emergence of terrible pollution-related diseases, including Minamata disease and Yokkaichi asthma. Since then, Japan has made significant strides in addressing pollution, with a marked decrease in pollutants and greenhouse gas emissions. However, pollution continues to pose a significant risk to the country's health.
Air pollution in Japan remains a leading health concern, with major cities like Tokyo experiencing high levels of fine particulate matter (PM2.5), sulphur oxide, and nitrogen oxide. These pollutants are primarily emitted from industrial operations, vehicle emissions, and cross-border air pollution. The combustion of fossil fuels, particularly in power plants and vehicles, is the leading driver of air pollution in Japan. This has led to respiratory diseases such as asthma and chronic bronchitis, posing a serious public health risk.
Water pollution in Japan has also had significant health impacts. During the rapid economic growth of the 1950s and 1960s, over 40,000 people were affected by water pollution-related diseases caused by factory runoff. While water quality has improved since then, only 58% of Japan's lakes meet environmental standards, and historical pollution in these lakes persists.
Additionally, plastic pollution is a growing concern in Japan, which is one of the world's top plastic consumers. Microplastic contamination in coastal waters and plastic waste in marine ecosystems pose threats to food safety, fisheries health, and marine biodiversity. The Japanese government has implemented robust pollution control programs and tightened regulations around industrial emissions, but ongoing pollution remains a significant challenge.
The health impacts of pollution in Japan translate into increased healthcare costs and reduced workforce productivity. With tens of thousands of annual deaths attributed to air pollution, it is crucial for Japan to continue addressing pollution through innovative environmental policies and a transition to clean energy sources.
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Frequently asked questions
Yes, factories are a major cause of pollution in Japan.
There are three main sources of pollution in Japan: industrial production activities, vehicle emissions, and cross-border air pollution.
Pollution in Japan has had severe effects on the environment and public health. It has caused respiratory diseases such as asthma and chronic bronchitis, and has been linked to tens of thousands of deaths annually. Japan's freshwater systems have also been affected, with over 40,000 people impacted by water pollution-related diseases caused by factory runoff in the 1950s and 1960s.
Japan has introduced various regulations and initiatives to address pollution. This includes tightening automobile emission regulations, promoting low-emission vehicles, and the 3R initiative, which encourages the reduction, reuse, and recycling of waste. However, Japan has been criticised for being slow to abandon fossil fuels and for a lack of concrete GHG reduction targets.
