Water Test Results Centre
How to read a PFAS result.
Health Canada’s 30 ng/L objective for the sum of 25 specified PFAS — an objective, not a finalized MAC — and how to talk about treatment claims.
Unit
Usually ng/L (ppt). Confirm whether the lab reported individual compounds, a sum, and which list.
Canadian reference
Health Canada’s current objective is 30 ng/L for the sum of 25 specified PFAS. It is an objective, not a finalized maximum acceptable concentration.
Possible sources
Aqueous film-forming foams, industrial sites, landfills, and some consumer-product pathways. Airport and fire-training areas are common investigation contexts.
What one result cannot conclude
- A non-detect depends on the method’s reporting limit.
- The 25-compound sum is not ‘all PFAS in existence’.
- No residential technology should be described as a blanket PFAS guarantee.
Sensible follow-up testing
- Use an accredited PFAS method and keep the analyte list.
- If results exceed or approach the objective, speak with the lab and local authority.
Source correction
Household treatment does not clean an aquifer. Public-health and site investigation sit outside a quote form.
Certification questions
Some NSF/ANSI 53 carbon products and NSF/ANSI 58 RO products carry specific PFAS-reduction claims. Certification to the standard without the PFAS claim is not enough.
Treatment options
Point-of-use systems protect only the connected tap. Confirm the exact model claim and verify with paired accredited samples.
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