"Harry K" wrote in message

Ahah. I somehow missed that you had replaced the pump. Yes, I would
suspect a leak in the plumbing somewhere in that situation. 20-30 gal
tank will have a drawdown in the 5-8 gal range IINM and that adds up
for every 15 minutes.


Is there a foot valve or check valve in the line? If they leak you'd lose
pressure.