Interestingly, underground lines aren't feasible in my hometown because of how close the water table is to the surface. Any trench deep enough to bury cables in would have to worry about flooding with groundwater or saltwater in some places.

The water table is so high that not only are there many places where basements would flood 100% of the year, but the majority of homes still have septic tanks instead of town sewage lines, and you can find houses where the lawn has been raised up with 3 or 4 feet of concrete to raise the septic tank to comply with modern regulations to avoid contaminating the groundwater supply.