Was using water more than usual so I called plumbing masters for help, 2 men showed up and told me I had a slab leak and I needed to call their recommended leak detector and were going to charge me $755 to do this. They were standing right next to the water softener and did not think about checking it out or anything. Called AZ Leak Detection on Thursday and were here next day. Brenden was here 3 minutes and said he sees small leak at water softener. After making sure there were no other problems he determines this is the problem. AZ Leak Detection saved me a lot of money. Definitely call them before anyone else, thanks guys