Our Brands


SJE is comprised of multiple recognized and well-respected brands with decades of leadership in their categories all known for their innovation and quality. Our portfolio of proven brands is vital to the future we’re creating together at SJE. Learn more about each of our brands and their applications below.

altronex control solutions by sje


Altronex is our electrical controls group providing a wide range of custom-designed control systems for automation, supervision, and monitoring of pump equipment, flow control and related processes. These systems are all engineered, built, programmed, and tested in Madison, Wisconsin.
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csi controls

CSI Controls

CSI Controls® is a leading manufacturer of liquid level control products including panels, alarms, floats and accessories. We have been servicing the water and wastewater industries since 1993. Our 52,000 sq. ft., UL-Listed manufacturing facility is headquartered in Ashland, Ohio.
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horlick control solutions by sje


Over our nearly 90 years in business, Horlick has transformed into a complete system integrator capable of supplying a range of equipment, from a simple relay-based duplex pumping station to a complex motor control center with custom PLC-based process and SCADA interface. Based out of Randolph, Massachusetts.
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L. W. Allen

L. W. Allen is a leading manufacturer of process control systems and a distributor of process flow equipment for municipal and industrial water and wastewater treatment facilities in Wisconsin and the upper Midwest. Based out of Madison, Wisconsin.
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oec control solutions by sje

Ohio Electric Control

Founded in 1978, OEC is a leader in electric control technology. Our dedication to quality products, timely delivery, fair prices and great customer service has continued through three generations. Based out of Ashland, Ohio.
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primex logo


PRIMEX® is an industry leader providing control solutions, including pump control panels, full-feature, web-hosted SCADA solutions and highly complex system integration projects for municipal and industrial process water applications. Based out of Plymouth, Minnesota, and St. Petersburg, Florida.
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sje rhombus logo

SJE Rhombus

Since 1975, SJE Rhombus has grown to become 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 into global markets. For over 40 years, SJE Rhombus has been committed to providing engineering and manufacturing excellence to our customers. Based out of Detroit Lakes, Minnesota.
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