SJE-Rhombus was founded on July 2, 1975 by Steve Johnston. Today, over 35 years later, we have grown into a leading manufacturer of reliable, trouble-free liquid level controls for the water, wastewater and sewage industries throughout the United States and Canada, as well as global markets.
We offer a wide variety of control products for residential, commercial, municipal and industrial markets. From control panels utilizing embedded circuit board technology, to complete control and monitoring systems designed and built to individual specifications, SJE-Rhombus represents the most reliable integration of engineering and manufacturing capabilities in the industry.
We are based out of Detroit Lakes, MN, and are proud to be a 100% employee-owned ESOP.