Bronte Wells
Noise pollution is a growing problem in cities around the world, with a variety of sources contributing to the din. From traffic and construction to public transportation and overpopulation, cities are often bustling hubs of activity that can have a detrimental impact on the health and well-being of residents. In 2022, the United Nations Environment Programme (UNEP) named Dhaka, the capital of Bangladesh, as the world's noisiest city. Other cities that are frequently mentioned as being particularly noisy include New York City, Calcutta, Karachi, Mumbai, and New Orleans.
| Characteristics | Values |
|---|---|
| Noisiest City in the World | Karachi, Pakistan |
| Dhaka, Bangladesh | |
| Rajshahi, Bangladesh | |
| Calcutta, India | |
| Mumbai (Bombay), India | |
| Ho Chi Minh City (HCMC), Vietnam | |
| New York City, USA | |
| Noisiest Cities in the US | New Orleans, LA |
| Philadelphia, PA | |
| Memphis, TN | |
| Noisiest Cities in the UK | Manchester |
| Edinburgh | |
| Quietest Cities in the US | Minneapolis, MN |
| Raleigh, NC | |
| Omaha, NE |
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What You'll Learn
New York City, USA
While Mumbai, India, is considered the loudest city in the world, with noise levels reaching close to 124 decibels, New York City is America's noisiest city. Six of the top 10 noisiest cities are located on the East Coast, with New York, Jersey City, Newark, and Boston all ranking in the top five.
Noise pollution is defined as any unwanted or disturbing sound that affects the health and well-being of humans and other organisms. It can cause hearing loss, stress, and high blood pressure, and it has been linked to cardiovascular problems, cognitive impairment, and depression. In young children, exposure to noise can cause problems with reading comprehension, concentration, memory, and attention span.
In New York City, noise complaints top the list of all complaints, with more than 140,000 noise-related complaints logged between the winter of 2013 and the fall of 2014. That works out to one complaint every four minutes. In 2023, Washington Heights, Harlem, Bedford-Stuyvesant, Bushwick, and Williamsburg received the most noise complaints.
The primary sources of noise pollution in New York City include traffic, loud concerts, construction, barking dogs, and late-night parties. The city has a noise code in place to regulate noise pollution and protect its residents, and it has specified quiet hours from 10 pm to 7 am. However, noise complaints continue to be a frequent issue, with a spike in complaints during the pandemic-induced lockdown.
To address noise pollution, New York City has implemented measures such as the "Stop Spreading the Noise" Act, which aims to crack down on loud vehicles and construction noise. The city also encourages residents to talk to their neighbors or businesses about reducing noise levels and offers suggestions for noise reduction, such as installing soundproof doors or using quieter appliances.
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Calcutta, India
Calcutta, formerly known as Kolkata, is the capital city of the Indian state of West Bengal. With a population of around 4.5 million people, it is India's centre for jute processing. It is also one of the noisiest cities in the world.
Noise pollution in Calcutta has been attributed to the use of musical horns, TT horns, and air horns by motorists, despite a ban on their use. In 2017, the commercial area of New Market in Calcutta recorded an ambient noise level of 78 dB(A), the maximum noise level in the city that year. This level of noise was observed both during the day and at night. Experts have also attributed Calcutta's noise pollution to honking, which has been described as the single biggest contributor to the city's noise pollution problem. In response, the Kolkata Traffic Police launched anti-honking drives, challenging 1,264 motorists in the last 12 days, an average of 222 each day.
The adverse effects of noise pollution are well-documented. Noise pollution has been described as a "silent killer", affecting the nervous system and causing hearing loss. It has also been linked to physical and mental health issues, including stress, inflammation, changes in body chemistry, impaired blood circulation, and heart attacks. In addition, noise pollution disrupts breeding cycles and hastens species extinction.
To address the issue of noise pollution in Calcutta, the police have sought more powers under Section 15 of the Environment Protection Act to prosecute people for noise pollution, with fines of up to Rs 1 lakh. Additionally, the city has implemented laws prohibiting loud renovations between 6:00 pm and 8:00 am on holidays. However, environmentalists have criticised the authorities for their inaction in response to repeated complaints about noise pollution.
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Karachi, Pakistan
The health risks associated with noise pollution are well-known and documented. Prolonged exposure to noise can cause irreversible hearing impairment, with those chronically exposed to noise being more prone to developing reduced hearing sensitivity. Studies have shown that a significant number of workers in the sheet metal and textile industries in Karachi suffer from noise-induced hearing loss. More than half of the cases of noise-induced hearing loss in the city also presented with tinnitus.
Road traffic noise has been identified as the most significant source of noise pollution in Karachi. A hospital-based study conducted at Jinnah Sindh Medical University (JSMU) evaluated the effects of noise-induced hearing loss due to road traffic in specific locations in Karachi. The study found that the population of Karachi is at risk of hearing loss, and this may lead to an overall high incidence of hearing impairment if preventive measures are not taken.
Industrial noise in Pakistan's largest cities, including Karachi, comes primarily from the weaving looms of the textile industry, steel mills, and airports. The average noise levels in a textile mill in Karachi were found to vary between 85 and 112 dB, which is extremely loud and harmful to human health. Similar studies have been carried out in other parts of the city, such as the one by Itrat Javed et al., which evaluated the effects of traffic noise on residents.
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Dhaka, Bangladesh
Dhaka, the capital of Bangladesh, is one of the most populated cities in the world, and it has the unfortunate distinction of being the world's noisiest city. The average noise frequency in Dhaka stands at a staggering 119 decibels, according to a report that surveyed 61 major cities worldwide. This level far exceeds the permissible limits set by the World Health Organization (WHO), which states that the maximum tolerable noise level for residential areas is 55 decibels and 70 decibels for commercial areas.
The primary source of noise pollution in Dhaka is vehicular traffic, with up to 80% of the noise emanating from vehicles. The use of hydraulic horns by drivers is a significant contributor, with their volume reaching up to 120 decibels. Despite a ban on these horns in 2017, enforcement has been lacking, and they continue to be widely used, causing immediate hearing injuries to those exposed for more than 60 seconds. The vast number of vehicles, including 800,000 motorbikes, and the insufficient number of traffic police make it challenging to monitor and control this issue.
The noise pollution in Dhaka has severe consequences for its residents, causing physical and mental health problems. A study found that 65% of traffic policemen in the city experience hearing and sleeping issues due to the excessive noise levels. The constant din also disrupts the sleep patterns of children, impacting their well-being. The situation has led to calls for declaring Dhaka a horn-free city and for stricter enforcement of existing laws and regulations regarding noise pollution.
The government has acknowledged the severity of the problem and has begun implementing projects to address it. The Environment Department's Dhaka region director, Md. Ziaul Haque, stated their commitment to minimizing shortcomings in noise pollution control rules and setting volume standards for horns in all vehicles. However, the effectiveness of these measures remains to be seen, and Dhaka continues to grapple with the detrimental effects of noise pollution on its citizens.
The noise pollution in Dhaka is a pressing issue that demands urgent attention and comprehensive solutions. The high noise levels not only impact the health and well-being of residents but also contribute to making the city less livable. With the combined efforts of the government, lawmakers, and residents, it is hoped that Dhaka can mitigate noise pollution and create a healthier and more peaceful urban environment for its citizens.
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Mumbai (Bombay), India
Mumbai, India, is one of the noisiest cities in the world. Noise pollution in the city has been a growing concern for the past two decades, with sources ranging from traffic, construction, and railways to festivals, religious places, and private and public functions. The impact of noise pollution on human and animal health, as well as its contribution to climate change, has been increasingly recognized.
In 2023, Mumbai marked 20 years since the Bombay High Court's first order against noise pollution in 2003. Despite efforts to combat the issue, the city remains one of the noisiest globally. Noise pollution in Mumbai has been found to exceed permissible limits, with decibel levels reaching as high as 97.3dB in some residential areas, far above the 65dB limit prescribed by the Central Pollution Control Board (CPCB).
Various organizations, such as the Awaaz Foundation, have played a crucial role in monitoring and campaigning for noise reduction in Mumbai. The foundation has recorded noise levels in the city for over 20 years, and their data has formed the basis of High Court orders and policy changes. The Mumbai Police have also actively participated in addressing noise pollution, obtaining noise meters and undergoing training to utilize them effectively.
One of the significant contributors to noise pollution in Mumbai is traffic. A report by the National Environmental Engineering Research Institute (NEERI) identified traffic as the leading source of noise pollution in the city. The slogan "Mumbai honks 18 million times an hour" highlights the magnitude of the problem. Noise from vehicles, including car horns at 90 dB and bus horns at 100 dB, significantly contributes to the overall noise levels in the city.
In addition to traffic, construction activities are a major source of noise pollution in Mumbai. With over 11,000 construction sites across the city, the constant noise from drilling and other construction work disrupts the lives of residents. The overlapping of various land uses in Mumbai, including industrial and commercial zones, has further exacerbated the issue, leading to higher noise levels.
The adverse effects of noise pollution on human health are well-documented. High noise levels can cause deafness, high blood pressure, heart disease, sleeplessness, mental health issues, aggression, irritation, and an increased risk of cancer. It also impacts wildlife, disrupting breeding cycles and contributing to species extinction. As a result, addressing noise pollution in Mumbai is crucial for the well-being of both the human and animal populations in the city.
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Frequently asked questions
There are several cities that have been described as having the most noise pollution. Here are a few:
- Calcutta, India, due to the constant honking of auto rickshaws and taxis.
- Karachi, Pakistan, due to traffic noise, which often reaches 90 decibels.
- Dhaka, Bangladesh, which has been named the world's noisiest city.
- New York City, USA, where noise is the number one quality of life issue.
- Mumbai (Bombay), India, described as "unfit for living, at least on the cacophony front".
Noise pollution refers to high levels of noise in a particular environment. It is often associated with urban areas and can have negative impacts on human health and well-being.
Common sources of noise pollution in cities include road traffic, construction projects, public transportation, aircraft, social activities, and industrial activities.
Noise pollution can have various negative impacts on human health. It can cause hearing problems, irritability, and even contribute to premature death. Prolonged exposure to noise levels above 70 dB can increase the risk of hearing loss.
Noise pollution in cities can be reduced through various measures, including:
- Implementing noise control regulations and enforcing them effectively.
- Incorporating more parks and green spaces, which can help dampen noise levels and provide residents with quieter areas.
- Using noise barriers or sound-absorbing materials in highly impacted areas.
- Promoting public awareness about the impacts of noise pollution and encouraging quieter behaviours.
