For any
current going out your
antenna, and equivalent amount has to return via the counterpoise/ground. RF currents will have the greatest flow where the resistance is lowest, be that house
wiring, control
cables or whatever. These kinds of irksome ground currents can be minimized with a good
antenna system ground. You may or may not be able to eliminate them without some
work, however. You will also find that how troublesome this is will depend on the frequency you transmit on.