Born in a Minnesota garage in 1975, SJE is a 100% employee-owned manufacturer whose early Tank Alert alarm system grew into a global water and wastewater controls company. Headquartered in Detroit Lakes, the company now employs nearly 800 people across 16 facilities and is known for combining engineering with manufacturing for residential, commercial, municipal, and industrial applications. SJE operates under ISO 9001 quality standards and holds more than 65 design and utility patents.
ISO 9001
UL
CSA
CE
TUV
Employee Stock Ownership Plan (ESOP)
Registration
Ohio Electric ControlBorn in 1978 in Jack and Martha McMullen’s basement, Ohio Electric Control builds standard and custom electrical control panels, with particular depth in water and wastewater applications. The Ashland manufacturer has grown from its first order of 2,500 panels into a three-generation family business, operating from a 25,000-square-foot facility and now part of the SJE team. Its engineers and technicians take projects from design through fabrication and programming, including specialized pump control systems for OEMs and other industrial customers.ASHLAND, OH
Pro-Tech Systems Group, IncEstablished in 1986, Akron-based Pro-Tech Systems Group designs and integrates independent industrial control and information systems for factory, commercial, and municipal operations. Its work ranges from process control and SCADA to industrial networking, field support, and interactive digital twins, with particular depth in water and wastewater treatment. PTSG is a founding member of the Control Systems Integrators Association and holds the association’s Diamond Tier designation, and it operates a UL508-approved panel shop with 24-hour emergency service.AKRON, OH
PRIMEX ControlsWith nearly a century of expertise in water applications, PRIMEX Controls designs and builds engineered control solutions for water and wastewater facilities across North America. The company combines systems integration with in-house fabrication, producing more than 7,500 engineered panels annually across four full-service assembly facilities. Its control panels are built and listed in-house, including to UL 508A and UL 698A standards, and supported by field service and 24/7 technical assistance.DAYTON, OH
RW Gate CompanyFrom its 16-acre facility in Troy, New York, RW Gate Company designs and manufactures American-made water control gates and related equipment for municipal and industrial projects. The company has completed thousands of projects across all 50 states and serves customers internationally, tailoring heavy-duty equipment to demanding flow-control applications. RW Gate is ISO 9001:2015 certified, designs to AWWA standards, and meets BABA and AIS requirements.TROY, NY