Thunder Bay Laboratory

Reliable testing data for government agencies and various industries


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At the ALS Environmental laboratory in Thunder Bay, we provide reliable and accurate analytical testing data to government agencies; mining, pulp and paper industries; and consulting and engineering firms. Our highly-technical expert chemists specialize in the microbiological and chemical testing requirements needed to meet the Ontario Drinking Water Regulations. As a result, ALS is the laboratory of choice for municipalities in Northwestern Ontario for environmental testing and technical support.

With ALS Environmental as your testing partner, you will receive superior customer service designed to exceed customer satisfaction. ALS offers value-added services such as customized CoC forms, customized EDDs and after-hours and weekend sample receipt. Our advanced online web access service called WebTrieve was designed for the benefit of convenience, simplicity, and time. This easy-to-use feature provides clients the ability to access results, download reports and compare regulatory limits. Whatever the need, Webtrieve delivers performance satisfaction on your schedule.

ALS has built a global reputation that sets us apart from the rest. Putting clients first is the definition of customer service, and it remains our top priority. We recognize you have a choice. Trust in ALS as your analytical testing partner and let us demonstrate that Performance is Everything!

Sample reception is available outside of regular hours of operation if necessary. Please contact the laboratory to make arrangements.


1081 Barton Street
Thunder Bay, ON P7B 5N3

Main Phone: +1 807 623 6463
After-Hours Phone: +1 807 624 4482

Email Lab

Office Hours

Monday - Friday: 9:00 a.m. - 5:00 p.m.

Sample Receiving Hours

Monday - Friday: 8:30 a.m. - 5:00 p.m.
Saturday: 8:00 a.m. - 12:00 p.m. (May 1 - Dec. 1)


  • Major-Cations/Anions
  • ICP/MS Metals
  • Acidity, Alkalinity, Hardness
  • BOD
  • COD
  • Colour
  • Conductivity
  • Nutrients (N + P)
  • pH
  • Solids (TSS,TDS,VSS)
  • Organic Halides (AOX)


  • Coliforms (Total + Fecal)
  • E. Coli
  • Standard Plate Counts (HPC)
  • Fecal Streptococus
  • Iron Bacteria
  • Filamentous Organisms
  • Presence Absence Testing (TC/EC/PsA/SA/AH)

Value Added Services

  • Dedicated Project Managers
  • Custom C/C Forms as needed
  • Sample Containers/Coolers
  • Flexible Report Styles
  • Customized Data Handling
  • On-Time Results Guarantee
  • Expedited TAT
  • WebtrieveTM Online Data Access
  • After Hours Pager
  • Weekend Sample Receipt
  • Dependable and Professional Staff
  • CALA Accredited/MOE Licensed

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