PFAS - per- and polyfluoroalkyl substances - have become one of the most significant emerging contamination issues in environmental science. Often called "forever chemicals" because they do not break down in the environment, PFAS are found in firefighting foam, non-stick coatings, food packaging, and hundreds of industrial applications.
Why PFAS Matter
PFAS contamination is widespread. They have been detected in drinking water, soil, groundwater and fish tissue across North America. Health studies have linked PFAS exposure to several adverse health effects including thyroid disease, liver damage, immune system effects and certain cancers.
BC Regulatory Framework
British Columbia has been developing PFAS guidelines through Technical Guidance documents from the Ministry of Environment. Key points include:
- Screening levels for PFOS and PFOA in soil and groundwater
- Drinking water guidelines aligned with Health Canada recommendations
- Investigation requirements for sites with known PFAS use (airports, fire training areas, military bases)
- Disposal requirements for PFAS-contaminated soil (cannot be sent to standard landfills)
Testing and Analysis
PFAS analysis requires specialized laboratory methods (EPA Method 537.1 or equivalent). Sample handling is critical - common materials like Teflon-lined caps, waterproof field notebooks and certain types of sample containers can introduce PFAS contamination into samples. Environmental professionals must follow strict protocols to avoid false positives.
Looking Ahead
Federal PFAS regulations are expected to tighten significantly in 2026-2027. Environmental professionals should be proactively testing for PFAS at sites with potential exposure, even where not yet specifically required by regulation. Early identification allows for better remediation planning and cost management.