Noise pollution


In small and large cities, pollution is an element that harms the lives of citizens, affecting their health and quality of life. The noise pollution is a type of air pollution present in many countries and there are many ways of perceiving.  


What is noise pollution?

Acoustic or noise pollution is the excess of sound that negatively affects the conditions of an environment . Noise understood as an annoying sound is noise pollution and can generate irreversible negative effects on the hearing, physical and mental health of people and on the ecosystems where it is present. This type of pollution is the second stressor in the urban environment and its main cause is caused by traffic .


The most common noise pollution is the noise that is generated around us, especially in streets and avenues. Many times it goes unnoticed but it still generates negative effects on the health of the beings that are exposed to it, be they human beings, fauna or flora of an ecosystem .


Noise in factories, traffic, alarms are part of the noise pollution that we experience on a daily basis and it is the second environmental stressor that negatively affects human health.

In some developed countries there are policies, laws and events to try to control the effects of noise pollution. An example of this is the noise laws that exist in some countries or the noiseless day, an annual event that takes place in some nations.

  • Causes of noise pollution
  • Effects edit
  • Prevention
  • Sources
  • Types of noise pollution
  • Examples of noise pollution

Causes of noise pollution

Among the causes that produce noise pollution we can mention the noise produced by urban transport, railways, alarms, construction work, ambulance sirens, tools, barking dogs or other domestic animals, speakers, among others. .

Traffic has been determined to be the leading cause of noise pollution worldwide .

Effects edit

Among the effects produced by noise pollution we can mention the following:

  • Stress.
  • Headaches.
  • Incitement to aggression.
  • Loss of hearing.
  • Concentration problems.
  • Cardiovascular and blood pressure problems.
  • Difficulty sleeping.
  • Alterations in behavior that can cause restlessness, insecurity, fear or irritability.
  • Cardiovascular and respiratory diseases.
  • Negative effects on memory.
  • Loss of attention or concentration.
  • In pregnant women it can cause hearing problems in the baby.
  • In children it negatively affects their learning and their socialization processes .

Many of these negative effects can cause irreversible damage to an ecosystem or its inhabitants .


Noise pollution can be prevented or reduced by reducing unnecessary noise such as those produced by cars, motorcycles, outdoors and in our homes, avoiding the sounds of electrical appliances that we are not using.

It is also important to travel to places that are not noisy, improve sound insulation in your home, plant a tree (since these help absorb sound) and stay informed of the laws that are focused on regulating pollution of this type in your country.

Other ways to prevent noise pollution are: avoid noisy events at night that interfere with the rest of the neighbors, avoid watching television or listening to the radio at full volume and the use of fireworks.


The sources of noise pollution can be located mainly in urbanized cities , among them the most frequent are:

  • The noise of the vehicles.
  • The noise of the constructions and industry.
  • The noise of the railways.
  • The noise of music, food and entertainment venues.
  • The noise from airports.

Unlike other types of pollution, it generates negative effects in the medium and long term .

Types of noise pollution

There are many types of noise pollution according to their different degrees or sound levels. These might be:

  • From 50 to 90 db: At this level the human ear can develop a discomfort.
  • 90 to 130 dB: Permanent damage occurs at this level.
  • More than 130 dB: At this level the pain will cause immediate hearing loss.

Examples of noise pollution

Among the examples of noise pollution we can mention the following:

  • The street traffic in cities is one of the main sources of this pollution.
  • The constructions generate a lot of noise that affects both the workers and the people around the work.
  • The airports are another example of noise pollution by noise generated by aircraft constantly.
  • The trains and stations are loaded with contamination.

Other real examples that we can give of noise pollution can be located in the noisiest capitals in the world. These are: Sofia, Bucharest, Tallinn, Dublin, Oslo and Prague.

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