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613-938-2521



814 Second St W
Cornwall, ON K6J 1H6

Dedicated Site Testing & Inspection Services since 1975

St. Lawrence Testing & Inspection Co. Ltd. is Eastern Ontario's choice for trustworthy in-house testing and inspection services for building and civil engineering projects. For more than 35 years, the construction industry has relied on the singular expertise St. Lawrence Testing brings to each of its projects. From geotechnical services to environmental considerations, trust St. Lawrence Testing services to offer you a full view of your construction project’s impact and safety. Call us today to speak to the construction experts Ontario knows and trusts.


Standard Service Area

  • Cornwall
  • Smith Falls
  • Brockville
  • Perth
  • Alexandria
  • Kemptville
  • Morrisburg
  • Hawkesbury
  • Prescott
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