Recently on a show called Selling Houses Australia Extreme, there was a house for sale with the massive power line thing in the front yard. Someone was brought in to do tests on it and found it emitted as much dangerous stuff as a regular household microwave. I wouldn't be too concerned. My mums friend lived next door to them when I was younger and raised 6 kids there... every single one of their family - kids, grandkids and all - are very healthy people still today.