How can I check that my water softener is operating correctly (that it is softening)? I have a Culligan MK 100. Is there a test kit (like a pool test kit) I can use, or take a sample to a store or... Thanks!
A water softener is a very unique water filtration system. It is great to own one. Yes, you cna take a sample of water to your local Sears store to test the hardness of your water. Please refer to the link below for additional information. I also attached a link to locate your local Sears store. I hope this helps!