What are the acceptable limits for LFN?
There are no acceptable limits as such. This is because disturbance depends not just on level but on a variety of other factors such as the character of the sound and background noise. Salford University with funding from DEFRA (Department for Environment Food and Rural Affairs) has produced a guidance document to assist Environmental Health Officers to assess complaints about LFN. The guidance takes the form of a procedure to determine whether a measured sound could be the cause of disturbance or not.
