Insights

Growth Opportunity The Sigma Group is a mid-size, employee-owned environmental services firm with revenue in the 50-100 million range and a broad service platform. This positions them for cross-sell to clients needing due diligence, remediation, civil/site engineering, and facilities planning. Target adjacent industries and clients with multi-site needs, emphasizing turnkey waste water treatment and environmental compliance services.

Regional Commitment Headquartered in Southeastern Wisconsin with recent funding activity and a stated commitment to regional growth (investment in MadREP), there is a strategic opening to pursue partnerships and long-term contracts with state and regional agencies, municipalities, and utilities focused on environmental, water, and infrastructure projects.

Tech Enablement A robust technology stack including AutoCAD, ArcGIS, HydroCAD, and cloud-based collaboration tools signals readiness for large, data-intensive projects. Use this to position scalable design-build-and-operate offerings, data-driven site assessments, and digital twin or GIS-enabled remediation planning.

Sustainability Focus Broad environmental services portfolio with emphasis on remediation, groundwater and vapor assessments, and turnkey wastewater treatment design suggests strong alignment with corporate and public-sector sustainability goals. Propose programs for ESG reporting, regulatory compliance optimization, and sustainable site remediation strategies.

Strategic Partnerships As a 100% employee-owned, award-winning firm of 51-200 employees, Sigma Group can be an attractive partner or acquisition target for larger firms seeking regional presence or specialized environmental expertise. Explore co-bidting, subcontracting, or alliance opportunities on larger, multi-disciplinary projects to expand win rates and geographic reach.

Similar companies to The Sigma Group, Inc.

The Sigma Group, Inc. Tech Stack

The Sigma Group, Inc. uses 8 technology products and services including AutoCAD, HydroCAD, WordPress, and more. Explore The Sigma Group, Inc.'s tech stack below.

The Sigma Group, Inc.'s Email Address Formats

The Sigma Group, Inc. uses at least 3 email formats:
The Sigma Group, Inc. Email FormatsExamplePercentage
FLast@thesigmagroup.comJDoe@thesigmagroup.com
95%
Last@thesigmagroup.comDoe@thesigmagroup.com
4%
First.Last@thesigmagroup.comJohn.Doe@thesigmagroup.com
1%

Frequently Asked Questions

What is The Sigma Group, Inc.'s phone number?

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You can contact The Sigma Group, Inc.'s main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is The Sigma Group, Inc.'s official website and social media links?

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The Sigma Group, Inc.'s official website is thesigmagroup.com and has social profiles on LinkedIn.

How much revenue does The Sigma Group, Inc. generate?

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As of October 2026, The Sigma Group, Inc.'s annual revenue is estimated to be $50M - $100M.

What is The Sigma Group, Inc.'s SIC code and NAICS code?

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The Sigma Group, Inc.'s SIC code is 8711 - Engineering Services and NAICS code is 54162 - Environmental Consulting Services.

How many employees does The Sigma Group, Inc. have currently?

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As of October 2026, The Sigma Group, Inc. has approximately 97 employees across 2 continents, including North America and Asia. Key team members include President: D. C., Owner: C. C. and Owner: G. L. Explore The Sigma Group, Inc.'s employee directory with LeadIQ.

What industry does The Sigma Group, Inc. belong to?

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The Sigma Group, Inc. operates in the Environmental Services industry.

What technology does The Sigma Group, Inc. use?

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The Sigma Group, Inc.'s tech stack includes AutoCAD, HydroCAD, WordPress, Microsoft 365, Google Cloud, Yoast SEO, Adobe Creative Suite and ArcGIS.

What is The Sigma Group, Inc.'s email format?

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The Sigma Group, Inc.'s email format typically follows the pattern of FLast@thesigmagroup.com. Find more The Sigma Group, Inc. email formats with LeadIQ.

When was The Sigma Group, Inc. founded?

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The Sigma Group, Inc. was founded in 1991.
The Sigma Group, Inc. logo

The Sigma Group, Inc.

Environmental ServicesWisconsin, United States51-200 Employees

The Sigma Group, Inc. is an employee-owned environmental consulting and engineering firm headquartered in Milwaukee, Wisconsin, serving clients in Southeastern Wisconsin. Its service platform covers the full lifecycle of environmental and site projects, including due diligence, subsurface investigations of soil, groundwater, and vapor, and the development and implementation of remedial strategies. The firm also delivers civil and site engineering, landscape architecture, environmental compliance, and turnkey wastewater treatment system design, along with health and safety, process and controls engineering, design and fabrication, surveying, construction management, facility planning, and related assessments. 

The Sigma Group serves clients facing environmental, regulatory, and infrastructure challenges, helping manage risk and compliance while delivering project outcomes. In the environmental services and consulting engineering landscape, it positions itself as a regional provider offering integrated capabilities across disciplines. The firm is based in Milwaukee and employs a local mid-sized team.

Section iconCompany Overview

Phone number
SIC Code
8711 - Engineering Services
NAICS Code
54162 - Environmental Consulting Services
Founded
1991
Employees
51-200

Section iconFunding & Financials

  • $50M - $100M

    The Sigma Group, Inc.'s revenue is estimated to be in the range of $50M - $100M

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