Distinctly Canadian Environmental and Occupational Health and Safety Consulting

Our professional staff serve a wide range of clientele including industrial, commercial, institutional (ICI), and residential.

Protect Your Home & Family

Concerned about asbestos, air quality, or mould? Our expert testing services help homeowners identify hidden hazards and create a safer living space. Get fast, reliable results with clear next steps.

Occupational Hygiene and Risk Management

Assessment & Exposure Management Regarding Safety, Ergonomics, Chemical, Physical, and Biological Agents in the Workplace.

Training Programs Covering a Wide Range of Topics

Includes Materials, Occupational & Environmental Health and Safety and Regulatory Compliance.

Hazardous Waste Management Services

Can Provide the way to accomplish Timely, Cost effective Work partnering with Accredited Contractors

Convenient Locations Across Central Canada

Cambridge  I  London  I Montreal  I  Ottawa  I  Toronto 

Our Services

T. Harris Environmental Management Inc. (THEM) is a leading Canadian environmental consulting firm in the following fields:

  • Environmental Services
  • Hazardous Materials Management
  • Occupational Health & Safety

Our professional staff serve a wide range of clientele including industrial, commercial, institutional (ICI), and residential.

We inspire and empower companies to achieve excellence in creating safe and healthy environments. We strive to create an engaged, proactive society which values and protects the health and safety of people and the environment.

Hazardous Building Materials Management

Environmental
Due Diligence & Remediation

Occupational Health & Safety

Health & Safety for Homeowners

What We Stand For

We are passionate about health & safety and committed to excellence.  Since 1979, we continue to provide high quality services. We take pride in building long-term relationships with our clients. We are dedicated to understanding your concerns and meeting your needs by delivering efficient, cost-effective solutions.

Featured News

 

 

 

 

 

 

 

 

 

 

MLITSD Compliance Blitzes 2025-2026: Key Inspection Focus Areas 

The MLITSD has released its 2025–2026 compliance initiatives, highlighting key focus areas and inspection blitzes across construction, healthcare, industrial, mining, retail, and professional services.

How to Prepare for a Surprise MLITSD Inspection

Allergy season can pose serious risks to respiratory-compromised patients in healthcare settings. Our latest guide outlines five essential steps facility managers can take to reduce indoor allergens and improve air quality—from HVAC maintenance to humidity control and staff training.

person testing a loading dock for air quality

Top 5 Issues When Switching from Heat to A/C

Switching from heat to A/C? Don’t overlook the hidden impact on indoor air quality. From dust and mould build-up to poor ventilation and VOC exposure, seasonal HVAC transitions can create serious health and comfort issues for occupants. In this article, we break down the top 5 indoor air quality problems that emerge during the switch to cooling—and the practical steps you can take to solve them.

Global OHS Updates

Discover the latest in occupational health and safety—from AI-driven workplace systems in Europe to Ontario’s recognition of ISO 45001 and COR certifications. This special update, researched and creatively compiled by THEM’s Occupational/Industrial Hygienist Kenny Li, highlights key developments that could impact compliance, safety practices, and procurement processes across industries.

What Our Clients Say

Our Affiliations

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