SJE celebrates 50 yearsDetroit Lakes, Minnesota-based SJE is celebrating its 50th anniversary. Founded in 1975, SJE delivers high-performance control solutions by integrating engineering and manufacturing. The company began when Steve Johnston helped his neighbor solve a septic holding tank issue. The first product, the Tank Alert Alarm, helped to ensure septic tanks did not overflow. This product laid the foundation for decades of trusted performance and continuous growth. Today, the company has more than 800 employees, 65 design and utility patents, 15 locations in three countries and nine product brands. SJE’s family of brands includes SJE Rhombus, CSI Controls, PRIMEX,
