CSI Water Treatment has a network of wholesale distributors that carry a full line of our innovative products. This gives professional contractors the opportunity to purchase the products they need, when they need them. Additionally, we offer water analysis, at no charge, to help determine the right unit for your water problems.

CSI Factory Authorized Training

From the novice water treatment contractor to the more experienced professional, the FACTORY AUTHORIZED TRAINING Seminar will cover most water treatment topics and factory-certify students on CSI Water treatment equipment. Learn More

Register Your Product

Register your new CSI Water product online to validate your warranty. Register now

CSI Newsletter

We have a newsletter where we send out periodic updates, product news and promotions! If you'd like to receive this newsletter, jump over to the Newsletter Application page and apply today.

Newsletter Application

Water Test Site

Water Test Site provides you up to date information on your water test status, as well as history of your old water tests.

Water Test Site

Chandler Systems is a proud member of the Water Quality Association and the National Ground Water Association.