Noise Pollution

Noise is defined as unwanted sound. Mild noise can be annoying; excessive noise can destroy a person’s hearing. People do not easily become accustomed to noise. The slightest unwanted sound can become very annoying if it continues for any length of time.

Main Causes

  • Auto/Motorcycle rickshaws
  • Pressure horns
  • Faulty vehicles
  • Loud speakers and musical instruments
  • Industrial/engineering workshops in urban areas


  • Hearing loss
  • Cardiovascular problems associated with accelerated heartbeat and high blood pressure
  • Gastric-intestinal problems
  • Decrease in alertness
  • Decrease in ability to memorize
  • Long lasting effects like insomnia, nervousness, bulimia, chronically high blood pressure, anxiety, depression and sexual dysfunction


  • Use of low pitch horns and effective silencer in vehicles
  • Proper service and tuning of vehicles
  • Four stroke engines
  • Adaptation of noise control systems in industries
  • Avoid over use of loud speakers and sound systems