The Ottawa–Gatineau region is home to a number of environmental consulting firms that provide a range of services to help businesses and organizations reduce their environmental impact and improve their sustainability. Here are the five largest environmental consulting firms in the region:
- Golder Associates Ltd: Golder Associates is a global environmental and engineering consulting firm with over 60 years of experience. The firm has a strong presence in Ottawa–Gatineau, with over 200 employees working in the region. Golder Associates provides a wide range of services, including environmental impact assessments, site remediation, water resources management, and climate change adaptation.
- Stantec Consulting Ltd: Stantec Consulting is a global engineering, architecture, and environmental consulting firm with over 22,000 employees worldwide. The firm has a strong presence in Ottawa–Gatineau, with over 1,000 employees working in the region. Stantec Consulting provides a wide range of services, including environmental impact assessments, site remediation, water resources management, and climate change adaptation.
- AECOM: AECOM is a global infrastructure consulting firm with over 87,000 employees worldwide. The firm has a strong presence in Ottawa–Gatineau, with over 1,000 employees working in the region. AECOM provides a wide range of services, including environmental impact assessments, site remediation, water resources management, and climate change adaptation.
- WSP Global: WSP Global is a global engineering and design firm with over 50,000 employees worldwide. The firm has a strong presence in Ottawa–Gatineau, with over 500 employees working in the region. WSP Global provides a wide range of services, including environmental impact assessments, site remediation, water resources management, and climate change adaptation.
- Ramboll: Ramboll is a global engineering, architecture, and environmental consulting firm with over 13,000 employees worldwide. The firm has a strong presence in Ottawa–Gatineau, with over 200 employees working in the region. Ramboll provides a wide range of services, including environmental impact assessments, site remediation, water resources management, and climate change adaptation.

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The 7 Biggest Environmental Consulting Firm near Ottawa–Gatineau
Ottawa Air Quality Testing GBE Assessments
- Address: 200 Rideau St Unit #308, Ottawa, ON K1N 5Y1, Canada
- Map: Click here
- Rating: 5 (27)
- Phone: +1 613-296-0420
- Website: Link
- Opening hours:
Monday: 8:00 AM – 5:00 PMTuesday: 8:00 AM – 5:00 PMWednesday: 8:00 AM – 5:00 PMThursday: 8:00 AM – 5:00 PMFriday: 8:00 AM – 5:00 PMSaturday: 9:00 AM – 4:00 PMSunday: 10:00 AM – 2:00 PM - Reviews:
8 months agoI was able to get an appointment quickly with the owner of the business that was helpful due to the urgent nature of a mold issue in our home. They communicated promptly regarding our air quality test results and answered all of our questions. It’s hard to find good people that still want to provide a quality job but GBE Assessments was exceptional. I rarely leave reviews, but I felt like this company deserved to be recognized for a job well done! I will certainly recommend them in the future to anyone needing indoor air quality services.a year agoJustin came to our home and did an incredibly thorough job of testing our home’s air quality. Everything from mold and fungi, chemicals, particulates, radon gas, carbon monoxide and dioxide, etc., on all three levels of our house. He was very professional and provided us with a complete report of what was done and how he did it as well as recommendations and conclusions. Would not hesitate to recommend Justin to anyone who wants to have their home’s air quality tested.4 months agoFast response to booking inquiry. Very professional and knowledgeable. Gave me great peace of mind checking and now knowing our home is safe. Look no further, this is a top notch outfit.11 months agoGreat company to use if you are having any air quality, mold or indoor allergies. Very informative and friendly. Not only is the owner knowledgeable, he uses only the highest level of industry equipment and uses third-party laboratories. The detailed reports are far superior to any other companies we have used in the past. If you suspect any issues in your home GBE Assessments is the only company, I would recommend.a year agoIt’s a rare combination these days when someone is not only professional but also very enthusiastic and curious about what they’re doing. Justin visited our home a couple weeks ago and performed quite a thorough testing of our house – from the basement area (our primary area of interest) to the 2nd floor. The final report that we received from Justin was as thorough as a scientific paper, yet written in a very accessible language. This whole experience was akin to a detective story: we suspected there was a problem in our basement and Justin’s findings confirmed that some readings were very abnormal.As a word of advice to other readers: if your life is generally healthy but your health started degrading for whatever reason and no one can tell you exactly what the reason is – do yourself a favor and check the air.
Air-conseil environnement
- Address: 455 Bd de la Gappe LOCAL 201, Gatineau, QC J8T 0G1, Canada
- Map: Click here
- Rating: 5 (25)
- Phone: +1 514-294-4387
- Website: Link
- Opening hours:
Monday: 9:00 AM – 5:00 PMTuesday: 9:00 AM – 5:00 PMWednesday: 9:00 AM – 5:00 PMThursday: 9:00 AM – 5:00 PMFriday: 9:00 AM – 5:00 PMSaturday: ClosedSunday: Closed - Reviews:
7 months agoSofiane was very informative and professional. He provided detailed explanation before and after the service. Would highly recommend.a year agoBest service I could of asked for. Sofiane was extremely helpful, he took the time to explain and answer all of our questions. I highly recommend this service!! Thank you again for all you help !4 months agoExcellent service provided by Sofiane. We wanted to carry out sample analyzes to detect asbestos in a building. From start to finish, he took the time to explain to us all the stages of taking samples, how many samples to analyze, how the regulations work in terms of analysis and sampling, etc. In addition, the turnaround time for receiving the results was quick and the report was very well done.2 months agoExcellent service and advice! If you have questions and want fast service, Sofiane is the person for you!6 months agoGreat service, Sofiane is very easy to reach and offered us a service adapted to our contaminated soil analysis needs!
Inflector Environmental Services – Ottawa
- Address: 6961 McKeown Dr, Greely, ON K4P 1A2, Canada
- Map: Click here
- Rating: 4.9 (25)
Asbex Environmental Contractors
- Address: 2280 Stevenage Dr, Ottawa, ON K1G 3W3, Canada
- Map: Click here
- Rating: 4.7 (6)
Dillon Consulting Limited
- Address: 177 Colonnade Rd, Nepean, ON K2E 7J4, Canada
- Map: Click here
- Rating: 5 (6)
Greenough Environmental Consulting Inc
- Address: 29 Capital Dr, Nepean, ON K2G 0E7, Canada
- Map: Click here
- Rating: 4 (5)
BULLER CRICHTON ENVIRONMENTAL INC.
- Address: 1 Raymond St, Ottawa, ON K1R 6Z3, Canada
- Map: Click here
- Rating: 5 (4)

Discover top consulting firms in various cities, like those mentioned in , to understand the dynamic business scene across Canada. These companies play a crucial role in shaping the vibrant business environment, positioning Ottawa–Gatineau, Ontario / Quebec, Canada as a center for strategic insights and cutting-edge solutions.
Top Environmental Consulting Firm Alternatives in Ottawa–Gatineau
The Biggest Environmental Consulting Firm in Canada
When it comes to environmental consulting firms in Ottawa-Gatineau, there are several top alternatives that are known for their expertise and reputation in the industry. These firms offer a wide range of services related to environmental assessment, remediation, sustainability, and compliance. Here are three of the most popular options:
- 1. Golder Associates: Golder Associates is a global environmental consulting firm that operates in Ottawa-Gatineau. They have a team of experienced professionals who provide expertise in areas such as contaminated site assessment and remediation, environmental impact assessments, and sustainable development. Golder Associates is known for their commitment to delivering high-quality projects that meet environmental standards.
- 2. Enviro-Strategies: Enviro-Strategies is a local environmental consulting firm based in Ottawa-Gatineau. They offer a wide range of services, including environmental planning and assessment, natural resource management, and climate change adaptation. Enviro-Strategies focuses on delivering innovative and practical solutions to their clients’ environmental challenges. They have a strong track record of successful projects in the region.
- 3. Stantec: Stantec is a multinational consulting firm that operates in Ottawa-Gatineau. They have a diverse team of environmental professionals who provide expertise in areas such as environmental site assessments, ecological restoration, and water resource management. Stantec is known for their technical excellence and ability to deliver sustainable solutions that meet regulatory requirements. They have a strong reputation in the industry.
These three environmental consulting firms are highly regarded in Ottawa-Gatineau and have a track record of successful projects. Whether you need assistance with environmental assessments, contaminated site remediation, or sustainable development planning, these firms can provide the expertise and guidance you need.
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