OP doesn't need to have a private well as a supply to have pressure issues. I have seen booster pumps on municipal water supplied installations. Some where there was not enough pressure for flush valves to work properly for whatever reason, others where pressure was low in general because of elevation of the property, and others where insignificant supply lines was a problem. Insignificant supply lines still leaves you with some problems, but if the lines are on the municipal side of things, you may not have much choice but to put in the booster to at least increase performance to some extent. I ran a circuit to a booster pump once for a customer that had the city water tower literally right across the street. Supposedly they fought with the town for years about the water pressure issues but never could get anywhere. I don't know what the real issue was there, but they could not run much water at all without losing pretty significant pressure. The incoming line was smaller than what many newer lines are, 3/4 inch IIRC, but I have seen many other places with only 3/4 incoming lines with much better performance than this, so there was more to it than just that. The booster pump still left it with some undesirable pressure at times but was better than what they had before.