OK, I ran out of water last week..rainwater cistern. Works good in the rainy season, but.... So I found a spring to develop. Despite the dry weather here in KY, it is putting out about 3/4gallon per minute. It is about 180 feet above ground level. I am running a 1 inch black pipe from the spring to a 325 gallon holding tank about 110 feet of elevation. I plan to run a 1.25 inch line from the tank to the house, and hook up with the plumbing between my jet pump and 36 gallon pressure tank. A dear friend was concerned that I might have a problem with sudden surges in pipe pressure inside my house due to a water hammer effect. He suggested putting in an air column with 4 inch PVC pipe or putting in pressure release valves outside the house. Is this necessary, or will the air bladder in the pressure tank act as an air column? Thanks.