If you hit any underground services with a ground anchor then you’ve got more problems than just being stuck because you’re obviously in the wrong place. By construction codes, underground utilities are required to be buried a minimum of around 2 feet below ground in most areas of the developed world. Also, the more dangerous the utility (like high voltage power) or the larger (like water and sewage mains) the deeper they are required to be buried. The most shallow utilities are likely to be right next to residences and, even so, I’ve only ever seen TV cable (illegally) running on the surface of the ground through dense trees next to houses. Most places, such as beach, desert or moors, where you will consider using a ground anchor there will be no utilities anyway.

Anchor away,
John