I have a on going problem with air in my water lines. When the outside water is turned on either the water comes in bursts or it is steady but with air bubbles. I have a horse farm and the water lines to my paddocks & barns froze and broke last winter (30 below 0 with no snow) so all of them were replaced underground this summer. The air and pressure problems started after they were replaced. I keep checking the gauge thinking I have another leak but it stays steady. Also I have a well but don't have any idea how to check if it's going dry. Don't think so as we have another dug well and a high water table. Thanks.

My first thought was that your pump was cavatating due to a low water table, but you shot that down when you told me the water table was high. Air has to be pulled into your system on the suction side, if the problem was on the pressure side then you would have a leak and not bubbles in your draw.
A small opening in the suction would give you the symptoms that you describe. The gage wouldn't fluctuate unless you caught it as the water came in bursts. I can't point a finger directly at the problem but I can point to the general area to start checking. In my area, pumps, wells, water softeners and air conditioners are separate trades. However I've been exposed to enough of them to comment. I hope Labman can add more to my reply. Good luck, Tom