Water Treatment Operator Class IV Practice Questions - ABC WPI Water Treatment Operator Class IV Certification Exam

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A utility must remove PFOA and PFOS to comply with the new NPDWR. Which combination of treatment technologies is EPA-recognized as best-available for PFAS removal?

Conventional coagulation, sedimentation, and rapid sand filtration Free chlorine disinfection followed by chloramine residual Granular Activated Carbon (GAC), ion exchange resins, and high-pressure membranes (RO or NF) UV disinfection at 40 mJ/cm² followed by chloramination

Correct Answer:

Granular Activated Carbon (GAC), ion exchange resins, and high-pressure membranes (RO or NF)

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