The link below summarizes the the effects of overhead power lines on EMF, Air Quality and Electrical Fields from Overhead Power Lines:
“The level of emf that a person may be exposed to depends on the distance they are located from the line, the amount of time they spend in close proximity to the line and the unique properties of that particular power line.
“It is therefore very important to create as much distance between yourself and the power line as possible.
“Double story homes with bedrooms upstairs as well as multilevel commercial buildings have a potentially higher risk of emf exposure as they are located closer to the power line itself.
“Probably the most over-looked problem in relation to power lines is the concentration of pollution in the area of the lines. Due to the build of static around the lines particulates in the air are attracted to the area. The problem is made worse when the power line is located close to a source of pollution (industry, busy road, coal fired power station etc.).
“When an oxygen molecule (O2) becomes electrically charged or “radicalized” it tries to steal electrons from other molecules, causing damage to the DNA and other molecules. Over time, such damage may become irreversible and lead to disease including cancer.
“Ecolibria have found that in many cases the property may be located a safe distance away from the power line but the backyard or area in which walking and playing is often enjoyed, is not a safe distance away.
“Breathing in charged particles has been linked to an increase in free radicles in the body which in turn has been linked to many adverse health effects including cancer. If the particles themselves are hazardous pollutants from car emissions or industry then the risk is potentially greater.”