Patented Iron Filters

Patented or patent applied for filters such as the OXY3 Iron Filter, not only provide great quality water, but do so using less energy and are far more trouble free.

In every water treatment category, Sterling has “a better mouse trap.”  By having more efficient softeners, easier to service reverse osmosis systems, better performing cartridge filters and extremely salt stingy commercial units Sterling provides great quality water.

Free Water Analysis

Free water analysis is done in our lab, so a recommendation can make sure the correct equipment is installed for all applications.

Lab technicians, like all other key positions, are filled with long-time employees that have the knowledge and experience necessary to provide outstanding customer support.

Our History

Our roots go back to 1934. This was the year that Charlie Sidell started in the water treatment business with his one employee, Emmett Culligan. They manufactured manual water softeners in their Fort Wayne, Indiana facility. In 1967, the new owners Robert and Rudy Wilfong moved the factory to Churubusco, Indiana. This new location provided room to grow in a rural and more wholesome environment to build the business. And grow it did! The business evolved into the largest supplier of water treatment equipment to the plumbing and well supply trade. Today, Sterling offers a complete line of innovative filters, softeners, and reverse osmosis systems. These products are available through licensed plumbers, well drillers, and pump installers nationwide.


Sterling Water Treatment
12630 US 33 North
Churubusco, IN 46723
Ph. (260) 693-1972
Fax (260) 693-0602