Buying a house with power lines running through the backyard

[Hung Dao]

I'm looking to buy a rental property and there is one house which numbers seem to add up for my scenario except for one thing: there are high voltage power lines running through the lot (more on the backyard and less on the house). At first, I didn't notice that since the lines are really high up. However, there is a huge tower 3 blocks away that could be seen anywhere in the neighborhood.

It's a cookie cutter neighborhood so many houses nearby do have the same situation.

I read that besides being a fire hazard, the magnetic field might cause health issue therefore affects price appreciation. Should I walk away from this house? Everything else was perfect.