Kiera Jefferson
The Ganges River, one of the most revered waterways in the world, is also one of the most polluted. Stretching from the Himalayan foothills to the Bay of Bengal, the river provides water to nearly half a billion people across 11 Indian states—more than any other river in the world. The river's pollution is mostly a manmade problem, caused by the fast growth of cities, agriculture, and industries in recent decades. The Ganges basin is one of the most densely populated regions on earth, with over 650 million people calling it home. As a result, tons of untreated sewage, industrial waste, and agricultural runoff are released into the river, causing high levels of disease-causing bacteria and toxic substances.
| Characteristics | Values |
|---|---|
| Population Density | The Ganges basin is one of the most densely populated regions on Earth, with over 650 million people. |
| Sewage | Around 3 million litres of sewage are dumped into the river daily, with only about half of it treated. |
| Industrial Waste | Waste from tanneries, chemical plants, textile mills, slaughterhouses, and hospitals is dumped, often untreated, into the river. |
| Agricultural Runoff | Agriculture uses large amounts of water for irrigation, and animal waste and chemical runoff from farms also contribute to pollution. |
| Religious Practices | Traditional Hindu funeral practices involve cremating bodies on the river banks, with ashes or partially burnt bodies disposed of in the river. Electric crematoria have been introduced as a more environmentally friendly alternative. |
| Dams and Barrages | Dams and barrages disrupt the natural flow of the river and can increase salinity, affecting groundwater and soil. |
| Water Extraction | Water extraction, particularly for agriculture, disrupts the natural flow of the river and harms wildlife. |
| Climate Change | The effects of climate change, such as reduced monsoon rains and increasing droughts, impact the river's water levels and flow. |
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What You'll Learn
Population density and religious practices
The river flows through many densely populated cities, with 100 of them having populations exceeding 100,000 residents. This leads to a large amount of domestic sewage and waste being discharged into the river. The rapid growth of these cities, along with a lack of proper sewage treatment facilities, contributes to the high levels of pollution in the Ganges.
Religious practices also play a significant role in the pollution of the Ganges. The river is considered sacred in Hinduism, and many Hindus believe that being cremated on its banks and having their ashes or remains immersed in the river will bring salvation and cleanse their sins. In the holy city of Varanasi alone, approximately 40,000 bodies are cremated annually and deposited into the Ganges. Many families cannot afford the high cost of sufficient wood for cremation, resulting in partially burnt bodies being placed in the river.
To address this issue, electric crematoria have been constructed as an alternative to traditional wood-burning pyres. These facilities help reduce river pollution and the number of trees cut down for funeral pyres. However, the religious significance of the Ganges means that those willing to clean up the river face enormous challenges, as they must balance environmental concerns with deeply rooted cultural and spiritual traditions.
The high population density and religious practices contribute to the intense pressure on the Ganges and its ecosystem. With a vast number of people relying on the river for their daily needs, the natural flow of the water has been disrupted, further exacerbating the pollution problem.
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Industrial and agricultural waste
The Ganges River is one of the most densely populated regions on Earth, with the river supplying water to approximately 40% of India's population across 11 states. The river flows through 100 cities with populations exceeding 100,000 residents, 97 cities with populations between 50,000 and 100,000 residents, and about 48 towns. This high population density contributes to the river's pollution, as untreated sewage, industrial waste, and agricultural runoff are all dumped into the river.
Industrial Waste
The Ganges River is heavily polluted by industrial waste, with more than 500 million liters of wastewater from industrial sources being dumped directly into the river every day. This waste often contains dangerous chemicals and heavy metals, such as lead, copper, chromium, cadmium, arsenic, mercury, nickel, sulphide ammonium, chemical dyes, sulfuric acid, and methane. The sugar, pulp, paper, and distillery industries are responsible for 70% of the pollution, while tanneries are responsible for the most harmful toxins, with chromium levels in the Ganges exceeding the recommended maximum level by more than 70 times. Other industrial cities along the banks of the Ganges, such as Prayagraj, Varanasi, and Patna, also contribute to the river's pollution by dumping untreated waste into it.
Agricultural Waste
Agricultural practices also contribute to the pollution of the Ganges River. The Green Revolution in India, which relied heavily on chemicals derived from fossil fuels, has given way to a new focus on growing indigenous crop varieties and following natural farming practices. However, the shift towards more sustainable agriculture has not completely mitigated the problem of agricultural runoff into the Ganges. In addition, plastic waste from the fishing industry, including ghost fishing gear and plastic packaging, has been found in the river, further contributing to the pollution.
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Sewage and animal waste
The Ganges River is the largest river in India, providing water to approximately 40% of the country's population across 11 states. It is also the most populated river basin in the world, with over 650 million people living in the region. This puts a strain on the river, as a large amount of water is removed for various purposes, including agriculture, industry, and household use.
One of the main contributors to the pollution of the Ganges is untreated sewage and animal waste. Around three million litres of sewage are emptied into the river daily, and only about half of that has been treated in any way. This is due to the lack of efficient sewage treatment plants and the direct connection of drains to the river. The high organic load in the sewage comes from domestic water usage by the population. This has led to high levels of disease-causing bacteria and toxic substances in the water, making it one of the most polluted waterways in the world.
The pollution in the Ganges has intensified over the years and now poses a significant threat to both human health and the environment. Water from the river has been linked to various water-borne diseases such as dysentery, cholera, hepatitis, and severe diarrhoea, which is a leading cause of death among children in India. The high rate of waterborne illnesses in India has been attributed to the pollution in the Ganges.
Various initiatives have been undertaken to clean the river, but they have not yielded significant results. In 2014, the Indian government announced the Namami Gange project, and by 2016, an estimated $460 million had been spent on cleaning efforts with little success. One proposed solution is to demolish or construct upstream dams to regulate the river's flow and provide dilution water during the dry season. However, these projects would be expensive and require significant pumping costs.
The religious significance of the river also contributes to the sewage and animal waste pollution. Traditional Hindu beliefs hold that cremation on the banks of the Ganges and floating down the river will cleanse the sins of the deceased. In the holy city of Varanasi, an estimated 40,000 bodies are cremated annually and deposited into the river. The introduction of electric crematoria has helped reduce pollution and the number of trees cut down for funeral pyres. However, many families cannot afford the high cost of cremation wood, resulting in partially burnt bodies being placed in the river.
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Water extraction and dams
The Ganges River is the largest river in India and supplies water to approximately 40% of the country's population across 11 states, serving an estimated 500 million people. This makes it the most used river in the world. The river is also sacred in Hinduism, with over 70 million Hindus bathing in the river to cleanse themselves of their past sins during festive seasons.
However, the river's water is highly polluted, posing a significant threat to both human health and the environment. Water extraction and dams have been significant contributors to the pollution of the Ganges.
Water Extraction
The river's water is being extracted at a rate faster than it can be replenished, leading to a lack of water. This is mainly due to the use of river water for irrigation and other agricultural purposes. The population's use of the river for everyday needs also contributes to the excessive water extraction.
Dams
The construction of dams along the Ganges basin has disrupted the river's natural flow and affected the river's water levels. The Haridwar Dam, built in 1854 during British rule, has been specifically noted for significantly reducing the river's flow. The Farakka Barrage, initially intended to divert freshwater into the Hooghly River, has increased salinity in the Ganges, adversely affecting groundwater and soil.
Additionally, the proposed construction of hundreds of new dams on the Ganges and its tributaries has raised environmental concerns. These include habitat destruction, forced relocation of people, loss of agricultural land, and further disruption of water supplies.
The combination of excessive water extraction and the impact of dams has resulted in a decline in the river's water levels and a disruption of its natural flow. This, in turn, has negatively impacted the wildlife that depends on the river, such as the Ganges river dolphin, turtles, otters, and gharials.
To address these issues, proposed solutions include demolishing upstream dams, constructing new dams or reservoirs to provide dilution water during the dry season, and promoting sustainable water use practices.
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Climate change
The Ganges River is sacred to the Hindu religion, and its water is considered holy. However, the river is one of the most polluted waterways in the world, which poses a significant threat to human health and the environment. The river supplies water to approximately 40% of India's population across 11 states and serves an estimated 500 million people, more than any other river globally.
The main causes of water pollution in the Ganges are the disposal of human sewage and animal waste, increasing population density, and the discharge of industrial waste into the river. The river flows through many cities with large populations, and a large proportion of the sewage in the Ganges originates from domestic water usage by this population. Three-quarters of all the sewage generated in the northern plains remains completely untreated before being discharged into the Ganges and its tributaries. Even where effective sewage treatment plants have been provided, more than half are either not operating or not operating efficiently.
The Ganges basin is one of the most densely populated regions on earth, with a population of over 650 million people. The fast growth of cities, agriculture, and industries in recent decades has led to the increased dumping of untreated sewage, industrial waste, and agricultural runoff into the river. The construction of dams and barrages along the river has also disrupted the natural flow of the river, affecting the health of the river and the wildlife that depends on it, such as the Ganges river dolphin.
Several initiatives have been undertaken to clean the river, but they have failed to produce significant results. After being elected, India's Prime Minister Narendra Modi pledged to work on cleaning the river and controlling pollution, and the government announced the Namami Gange project. By 2016, an estimated $460 million had been spent on various efforts to clean up the river, with little success. Proposed solutions include demolishing upstream dams to allow more water to flow into the river during the dry season, constructing new upstream dams or coastal reservoirs to provide dilution water, and investing in more efficient sewage treatment plants.
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Frequently asked questions
The Ganges is one of the most populated river basins in the world, with tons of people regularly using it and little effort made to clean it. The main causes of water pollution in the Ganges are the disposal of human sewage and animal waste, increasing population density, and the discharge of industrial waste into the river.
Three million litres of sewage are emptied into the Ganges every day, with only about half of that undergoing any treatment. Sewage is often dumped into the river through drains that are directly connected to it.
Waste from tanneries, chemical plants, textile mills, slaughterhouses, and hospitals is dumped, untreated, into the river. Major corporations in the area use the Ganges to dispose of their waste.
Agriculture sucks out vast quantities of water from the Ganges for irrigation. Additionally, agricultural runoff and animal carcasses are also dumped into the river, contributing to its pollution.
The Ganges is considered a sacred river by Hindus, who believe that its water can wash away their sins. As a result, many people travel to the river to perform ritual baths, dips, and sips, and to have their ashes sprinkled into it. Traditional funeral practices involve cremating bodies on wooden pyres on the river banks, with the remains then deposited into the river. While electric crematoria have been constructed as a more environmentally friendly alternative, many families cannot afford the high cost of cremation wood, leading to partially burnt bodies being placed in the river.
