depends, is it in a hard or soft water area?
You can also ask the water board to do a test and they will tell you how much lead is making it into the water, and provide recommendations on if it should be replaced or not.
If it needs to be replaced its going to cost a fair bit, as you will need to replace all the pipes in the house and take floorboards/carpet/etc up, which might not go back down in a decent state, plus you will need to dig back to the waterboard’s pipe (which isn’t necessarily where the meter is) and ground work can work out to be very expensive, but it does depend on how rocky it is, and density of other underground pipework.