PFAS Treatment Deadline Compliance Register

PROBLEM: On April 10, 2024 the EPA finalized the first enforceable national drinking-water limits for PFAS: maximum contaminant levels of 4.0 parts per trillion for PFOA and PFOS (health-based goal zero), 10 ppt for PFHxS, PFNA and GenX chemicals, and a Hazard Index of 1 for mixtures. Public water systems must complete initial monitoring by 2027 and install treatment by 2029 if they exceed the limits — but until then a system can exceed the limit without being in violation, and there is no unified record of which systems are on track. (Distinct from PV-088/PV-106, which track PFAS settlement funds and contamination ledgers — this tracks the compliance deadlines.)

SOLUTION: An IBM Cloud Ideas compliance improvement that maintains a PFAS treatment-deadline register: each water system is logged with its monitoring results, its 2027 monitoring status and its 2029 treatment-installation plan, with systems at risk of missing either deadline flagged for regulators and the public.

EVIDENCE BASIS: DOCUMENTED — EPA National Primary Drinking Water Regulation for PFAS, finalized April 10, 2024: MCLs 4.0 ppt PFOA/PFOS (MCLG zero), 10 ppt PFHxS/PFNA/GenX, Hazard Index 1 for mixtures; initial monitoring by 2027, treatment by 2029.