A burst pipe is hard to miss. Water is coming out somewhere it shouldn't, and there's a lot to deal with at once. If that's happening right now, stop reading and call (858) 324-6400 and we'll send someone out.
If you're reading calmly, you're probably here about the quieter version. A pipe that's weeping at a fitting. A supply line that looks corroded and worries you. Water pressure that changed. Copper can wear thin from within over time until a pinhole opens, and water chemistry is just one possible reason. The pinhole version can do more damage than the dramatic one, because it runs hidden. Either version deserves the same response. Find the failure, understand why it happened, and fix the actual cause, not just the wet spot.
That last part matters most. A pipe that failed from age and water chemistry can fail again nearby, because the pipe around it is the same age. Sometimes the right fix is the one repair. Sometimes it's a conversation about the line, or in an older house, about a repipe, and you'll get that conversation straight, with the reasons visible and the decision entirely yours. The aim is a repair that deals with the cause, so the same leak doesn't keep coming back.