The PFAS Deadline That Did Not Move: Initial Monitoring Is Due April 26, 2027
Most of the PFAS coverage since May has been about deadlines moving. EPA proposed letting drinking water systems request two additional years, to 2031, to meet the PFOA and PFOS limits, and proposed rescinding the regulations for four other PFAS entirely. Both proposals are still proposals. Neither one touches the date that matters first.
Initial monitoring results are still due to the state by April 26, 2027. Compliance monitoring still begins no later than that date. For a groundwater system that has not started, the sampling window is already narrow, and for the labs running the analysis, the sample volume arrives before the deadline does, not on it.
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