Hello all. I am very new here and sorry if I will sound like a rookie or someone who knows pretty much nothing. I am currently a full time police officer by trade, but trying to repair around my house anything I can do myself. I've been having some small issues with my private well for some time. The latest and most significant issue is I believe refers as water hammer. Pretty much anytime I turn on water in my house, I can hear hammering sounds coming from pressure switch (which is outside of the house next to the well). What would be first place to check? Should I drain pressure tank? And speaking of pressure tank, i noticed that i have one huge tank and one smaller tank. I guess smaller one is pressure tank? If that is the case, what is the bigger tank? I also have water softener and I think iron filter system, which I am planning to replace for new ones as my current ones seem to be old and water softener does not appear to be working. I also have a tank for chlorine, which actually does appear to be working. Thanks for your help. I really appreciate it and really want to get started on sort of private well rebuild project.

5inch casing what is this [img]https://cimg4.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x1124/20210402_105649_c30fa81af113a277df442546ca8c5f9158b30fe7.jpg[/img] [i]How does this come out. 5 inch casing and water is coming through this and out the top of casing. Assuming i have a crack in line but haven't seen this piece that is under cap. Any ideas?[/i]