There is an old saying in the Carpentry Business - "Measure Twice - Cut Once!" Yet,people continue to want to install water treatment devices on their water systems WITHOUT any testing and then are stunned to find out they don't work. Proper water treatment starts with accurate water testing. We have water tests that you can complete yourself,as well as professional-grade test kits which are good for multiple uses. If you have questions about which method is best for testing different contaminants or what test you should use,you can e-mail us at firstname.lastname@example.org or call one of our water experts at 800-608-8792.