The Sigma Group (Sigma) is a 100% employee owned, award-winning consulting engineering firm headquartered in Southeastern Wisconsin. We provide a broad platform of consulting services to our clients including due diligence assessment and planning, subsurface soil, groundwater, and vapor assessments, remedial strategy development and implementation, civil/site engineering, landscape architecture, environmental compliance, turn key waste water treatment system design and implementation,  health and safety compliance, process engineering and design, controls systems engineering, design and fabrication, surveying, construction management and engineering, facility planning, management and assessments.

We enable success by managing the many challenges and risks facing our clients and their stakeholders.

The Sigma Group, Inc.

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