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privatewelldata / Certified labs

Certified labs – Ontario MECP licence

46 labs. Updated 2026-10-18. Source : Ontario MECP – List of Licensed Laboratories.

All lists66Ontario MECP licence46Quebec MELCCFP accreditation20

Include labs that likely serve only public water systems

Alberta, British Columbia, Nova Scotia, New Brunswick: we don’t list labs for these provinces. Use your province’s official list:

Links checked 2026-10-18.

Accepts private well samples (listed) Certified lab Public systems only

Official resources

Règlement sur la qualité de l'eau potable (Q-2, r. 40)Québec's drinking water regulation sets the legal limits for contaminants. Use the official text when you compare your results.www.legisquebec.gouv.qc.ca · checked 2026-10-17 (browser; 403 to bots)MELCCFP – accreditation scopes of Québec labs (DR-12-CDA)Québec's environment ministry explains what each accreditation domain code covers. Use it to see exactly which drinking-water tests a Québec lab is accredited for.www.environnement.gouv.qc.ca · checked 2026-10-18 (robots allow; direct fetch 404 – recheck URL)CALA directory of accredited laboratoriesSearch the national accreditation body's directory to check whether a lab is accredited for the water tests you need. Filter by province and by analyte.directory.cala.ca · checked 2026-10-18Nova Scotia Health – water testingNova Scotia Health explains how to submit a well water sample and lists its current fees for bacteria and chemical packages.www.nshealth.ca · checked 2026-10-18

46 rows · showing 1–25

AGAT Laboratories Ltd

ON

Ottawa, Ontario · (905) 712-5108

✓ Accepts samples from private citizens

AGAT Laboratories Ltd.

ON

Mississauga, Ontario · (905) 712-5108

✓ Accepts samples from private citizens
LeadOrganic chemicals / pesticides

AGAT Laboratories Ltd.

ON

Mississauga, Ontario · (905) 712-5108

✓ Accepts samples from private citizens
Organic chemicals / pesticides

ALS Environmental (Thunder Bay)

ON

Thunder Bay, Ontario · (807) 623-6463

✓ Accepts samples from private citizens
Lead

ALS Environmental (Waterloo)

ON

Waterloo, Ontario · (519) 886-6910

✓ Accepts samples from private citizens
LeadOrganic chemicals / pesticides

ALS Environmental (Winnipeg)

ON

Winnipeg, Manitoba · (807) 623-6463

Aquatic and Environmental Laboratory Inc.

ON

Barrie, Ontario · (705) 722-5227

✓ Accepts samples from private citizens

Bureau Veritas Canada (2019) Inc.

ON

Mississauga, Ontario · (905) 817-5700

✓ Accepts samples from private citizens
LeadOrganic chemicals / pesticides

Bureau Veritas Canada (2019) Inc.

ON

Unit 4 Mississauga, Ontario · (905) 817-5700

✓ Accepts samples from private citizens
Radioactivity

Caduceon Environmental Laboratories (Barrie)

ON

Ontario · (705) 252-5743

✓ Accepts samples from private citizens

Caduceon Environmental Laboratories (Kingston)

ON

Kingston, Ontario · (613) 544-2001

✓ Accepts samples from private citizens
Organic chemicals / pesticides

Caduceon Environmental Laboratories (Ottawa)

ON

Ottawa, Ontario · (613) 526-0123

✓ Accepts samples from private citizens
Lead

Caduceon Environmental Laboratories (Richmond Hill)

ON

Richmond Hill, Ontario · (289) 475-5442

✓ Accepts samples from private citizens
Organic chemicals / pesticides

Caduceon Environmental Laboratories (Windsor)

ON

Windsor, Ontario · (519) 966-9541

✓ Accepts samples from private citizens

City of Peterborough Environmental Protection Laboratory

ON

Peterborough, Ontario · (705) 742-7777 dial 2,2,1

✓ Accepts samples from private citizens
Lead

E3 Laboratories Inc.

ON

Niagara-on-the-Lake, Ontario · (905) 641-9000

✓ Accepts samples from private citizens

Eurofins Environment Testing Canada Inc.

ON

Ottawa, Ontario · (613) 727-5692

✓ Accepts samples from private citizens
LeadOrganic chemicals / pesticides

Gelda Scientific

ON

Mississauga, Ontario · (905) 673-9320

✓ Accepts samples from private citizens

Halton Regional Laboratory

ON

Burlington, Ontario · (905) 825-6000 ext. 6254

Lead

Health Physics Laboratory, Ontario Power Generation

ON

Whitby, Ontario · (905) 430-2215 ext. 402-3277

Radioactivity

Laboratory Services Division, University of Guelph

ON

Guelph, Ontario · (519) 767-6299 Toll Free: 1-877-UofG-AFL (1-877- 863-4235)

Ministry of Labour, Immigration, Training & Skills Development – Radiation Protection Services

ON

Unit 1 Mississauga, Ontario · (888) 999-3921

Radioactivity

Ministry of the Environment, Conservation & Parks – Laboratory Services Branch

ON

Etobicoke, Ontario · (437) 771-9439

LeadOrganic chemicals / pesticides

Near North Laboratories Inc.

ON

North Bay, Ontario · (705) 497-0550

✓ Accepts samples from private citizens

Niagara Analytical Laboratories Inc.

ON

Niagara Falls, Ontario · (905) 374-5227

✓ Accepts samples from private citizens

Paracel Laboratories Ltd.

ON

Ontario · (613) 731-9577

LeadOrganic chemicals / pesticides

Public Health Ontario Laboratory (Kingston)

ON

Kingston, Ontario · Customer Service Centre: (416) 235-6556 1 (877) 604-4567 (Toll Free)

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (Hamilton)

ON

Hamilton, Ontario · Customer Service Centre: (416) 235-6556 1 (877) 604-4567 (Toll Free)

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (London)

ON

Unit 102 London, Ontario · Customer Service Centre: (416) 235-6556 1 (877) 604-4567 (Toll Free) Local: (519) 455-9310

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (Orillia)

ON

Orillia, Ontario · Customer Service Centre: (416) 235-6556 1 (877) 604-4567 (Toll Free)

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (Ottawa)

ON

Ottawa, Ontario · Customer Service Centre: (416) 235-6556 1 (877) 604-4567 (Toll Free)

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (Peterborough)

ON

Peterborough, Ontario · Customer Service Centre (416) 235-6556 1 (877) 604-4567 (Toll Free)

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (Sault Ste. Marie)

ON

Sault Ste. Marie, Ontario · Customer Service Centre: (416) 235-6556 1 (877) 604-4567 (Toll Free) Local: (705) 254-7132

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (Sudbury)

ON

Sudbury, Ontario · Customer Service Centre: (416) 235-6556 1 (877) 604-4567 (Toll Free) Local: (705) 564-6917

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (Thunder Bay)

ON

Thunder Bay, Ontario · Customer Service Centre: (416) 235-6556 1 (877) 604-4567 (Toll Free) Local: (807) 622-6449

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (Timmins)

ON

Timmins, Ontario · Customer Service Centre (416) 235-6556 1 (877) 604-4567 (Toll Free)

✓ Accepts samples from private citizens

Public Health Ontario Laboratory (Toronto)

ON

Suite 1701 Toronto, Ontario · Customer Service Centre (416) 235-6556 1 (877) 604-4567 (Toll Free)

✓ Accepts samples from private citizens

SGS Canada Inc. (Lakefield)

ON

Lakefield, Ontario · (705) 652-2000

✓ Accepts samples from private citizens
LeadOrganic chemicals / pesticidesRadioactivity

SGS Canada Inc. (London)

ON

London, Ontario · (519) 672-4500

✓ Accepts samples from private citizens

Testmark Laboratories Ltd. (Kirkland Lake)

ON

Kirkland Lake, Ontario · (705) 642-3361

✓ Accepts samples from private citizens

Testmark Laboratories Ltd. (Mississauga)

ON

Mississauga, Ontario · (905) 821-1112

✓ Accepts samples from private citizens
LeadOrganic chemicals / pesticides

Testmark Laboratories Ltd. (Sudbury)

ON

Garson, Ontario · (705) 693-1121

✓ Accepts samples from private citizens
LeadOrganic chemicals / pesticides

Testmark Laboratories Ltd. (Thunder Bay)

ON

Thunder Bay, Ontario · (807) 333-0921

✓ Accepts samples from private citizens
Lead

Testmark Laboratories Ltd. (Timmins)

ON

Timmins, Ontario · (705) 531-1121

✓ Accepts samples from private citizens
Lead

Toronto Water Laboratory

ON

Toronto, Ontario · (416) 392-2960

LeadOrganic chemicals / pesticides

York-Durham Regional Environmental Laboratory

ON

Pickering, Ontario · (905) 686-0041

✓ Accepts samples from private citizens
LeadOrganic chemicals / pesticides