PFAS / PFOS
What are PFAS and PFOS?
Per- and polyfluoroalkyl substances (PFAS), including PFOS and PFOA, are persistent synthetic chemicals used in industrial and consumer applications. They are sometimes referred to as “forever chemicals” due to their resistance to environmental and biological breakdown.
PFAS have been detected at low levels in drinking water supplies worldwide.
How PFAS are reduced from drinking water
PFAS can be reduced using several treatment approaches, including:
• Reverse osmosis (RO)
• High-performance activated carbon adsorption
Carbon-based reduction depends on media type, contact time, flow rate, and ongoing maintenance.
Puratap testing and evidence
Puratap systems have undergone independent laboratory testing for PFOS and PFOA reduction.
Testing methodology:
• Testing conducted by IAPMO-accredited laboratories
• Testing performed using NSF/ANSI-based protocols under controlled conditions
• Challenge water prepared according to specified parameters
• Results demonstrate meaningful reduction of PFOS and PFOA within defined operating
parameters
Laboratory competence:
IAPMO operates accredited laboratories capable of independent performance testing to recognised standards. Testing protocols follow established NSF/ANSI methods for contaminant challenge water composition, operating conditions, and analytical measurement.
Full performance data sheets are available on request.
Certification and regulatory context
• Puratap systems comply with Australian WaterMark requirements
• Materials in contact with drinking water comply with AS 4020 for material safety
• Independent laboratory testing provides contaminant-specific performance evidence
• Testing methodology aligns with internationally recognised NSF/ANSI protocols
Understanding testing and certification
Laboratory testing and certification are distinct processes. Testing refers to analytical performance evaluation according to defined protocols. Certification combines testing with administrative, contractual, and listing requirements. Equivalent testing protocols can yield comparable results regardless of certification pathway.
