At the end of May 2010 Chief Medical Officer of Health (CMOH) of Ontario released a report entitled “The Potential Health Impact of Wind Turbines”, prepared in response to public health concerns about wind turbines, particularly related to noise. The report presents a synopsis of existing scientific evidence on the potential health impact of noise generated by wind turbines.
Main conclusions from the report:
• While some people living near wind turbines report symptoms such as dizziness, headaches, and sleep disturbance, the scientific evidence available to date does not demonstrate a direct causal link between wind turbine noise and adverse health effects.
• The sound level from wind turbines at common residential setbacks is not sufficient to cause hearing impairment or other direct adverse health effects. However, some people might find it annoying. It has been suggested that annoyance may be a reaction to the characteristic “swishing” or fluctuating nature of wind turbine sound rather than to the intensity of sound.
• Low frequency sound and infrasound from current generation upwind model turbines are well below the pressure sound levels at which known health effects occur. Further, there is no scientific evidence to date that vibration from low frequency wind turbine noise causes adverse health effects.
• Community engagement at the outset of planning for wind turbines is important and may alleviate health concerns about wind farms.
• Concerns about fairness and equity may also influence attitudes towards wind farms and allegations about effects on health. These factors deserve greater attention in future developments.
Full report available at http://www.health.gov.on.ca
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