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
Understanding Your Duties Under OHSA Part III in Ontario
Ensure your organization can demonstrate due diligence under Ontario’s OHSA Part III. This guide breaks down key responsibilities for employers, owners, and supervisors—and how to support them with proper documentation, assessments, and defensible processes.
Fall IAQ Maintenance Checklist for Facility Teams
Prepare your building for the cooling-to-heating transition with our Fall IAQ Maintenance Checklist. Identify common indoor air quality risks early and take proactive steps to maintain comfort, performance, and occupant well-being throughout the winter season.
MLITSD Compliance Blitzes 2026-2027
MLITSD has released its 2026–2027 inspection blitz priorities, outlining the sectors and hazards inspectors will be focusing on across Ontario. This article breaks down what to expect and how your organization can prepare proactively to reduce risk, address compliance gaps, and stay inspection-ready.


