What should I test for?
Six quick questions about your well and household. Get a test list with the reason for each item.
Start the helperOfficial well-water data, one search away
Is your well water safe? Start with the facts.
Certified drinking-water labs from official state and provincial lists, with the source and licence behind every record. Free and neutral. We don't sell filters.
| Ontario MECP licence | 49 |
| Quebec MELCCFP accreditation | 20 |
We are adding jurisdictions one official list at a time. Every lab links to the government list it came from.
69certified labs listed
2official lists
2026-10-18last refreshed
Certified labs
See all labs →Richmond Hill, Ontario · (289) 475-5442
Organic chemicals / pesticides
Ottawa, Ontario · (905) 712-5108
Kingston, Ontario · (613) 544-2001
Organic chemicals / pesticides
Pickering, Ontario · (905) 686-0041
LeadOrganic chemicals / pesticides
Labs by certifying list
Free & low-cost official testing
Public Health Ontario: well water testing →Ontario tests private well water for bacteria free of charge.
Pick up a sample bottle from your public health unit and get it to a Public Health Ontario lab within 48 hours. The free test covers E. coli and total coliforms only, not chemicals. Nova Scotia Health tests bacteria for $34.50.
Sources, checked 2026-10-17: Public Health Ontario · Nova Scotia Health – water testing fees
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Where the data comes from
View all data sources →- Ontario MECP – List of Licensed LaboratoriesOpen Government Licence – Ontario · 49 · 2026-10-18
- MELCCFP – DR-12-LLA-03 accredited drinking-water labsCC-BY 4.0 (Gouvernement du Québec) · 20 · 2026-10-18