Sounds above what level are considered hazardous noise pollution?

Explanation

The level at which sounds are considered hazardous noise pollution depends on both the intensity of the sound and the duration of exposure. Sound intensity is typically measured in decibels (dB). Prolonged exposure to sound levels of 85 decibels or above can potentially lead to hearing damage over time. Noise level is expressed on a logarithmic scale of decibels. The baseline noise levels in the community vary around 40 dB. International standards prescribe a maximum of 50 dB for day and 40 dB for night time in a residential area. Noise over 115 dB is regarded as highly avoidable. The World Health Organization (WHO) recommends an industrial noise limit of 75 dB.