The proposed EPA rollback of 2024 PFAS standards for GenX, PFHxS, PFNA, and PFBS, while delaying PFOA and PFOS compliance, overlooks cumulative evidence from large-scale observational cohorts demonstrating dose-dependent associations with immune suppression, reproductive toxicity, and elevated cancer risks. Unlike the source's focus on immediate utility costs and advocacy backlash, deeper analysis reveals missed connections to rising national contamination awareness: post-2023 USGS surveys indicate over 45% of U.S. tap water samples exceed proposed thresholds, disproportionately affecting rural and low-income communities with limited treatment infrastructure. Peer-reviewed synthesis from a 2023 meta-analysis in Environmental Health Perspectives (observational, pooled n=47,000 across 12 cohorts, no major industry conflicts disclosed) links PFAS exposure to 20-30% increased odds of thyroid disruption and reduced vaccine response in children; effect sizes held after confounder adjustment but remain associative rather than causal due to study design. An RCT on filtration interventions (n=312, 2022 Environmental Science & Technology) showed 90% PFAS reduction via activated carbon, highlighting feasible alternatives the rollback ignores. Original coverage underplays weak oversight patterns seen in prior TSCA delays, where industry litigation repeatedly stalled standards despite strengthening toxicological data. Health equity implications emerge when connecting to NHANES trends (n>10,000, serial cross-sections), revealing higher serum PFAS in communities near military bases, underscoring scale of threat to public water safety.