The PFAS Assessment and Source Reduction Activities 2025 Annual Report is required by § 62.1-44.34:29-33.D of the Code of Virginia to characterize annual activities aimed at reducing per- and polyfluoroalkyl substances (PFAS) in drinking water through data transfer of PFAS monitoring results from public water systems (PWS), identification of significant PFAS sources in affected PWS source water, and guidance from the PFAS Expert Advisory Committee (PEAC). This second annual report covers activities from October 1, 2024 to September 30, 2025 and includes the first full year of the Department of Environmental Quality’s (DEQ’s) PFAS source assessment efforts.

Highlights during the 2025 reporting period include:

• DEQ received four quarterly data transfers from the Virginia Department of Health (VDH) indicating 59 drinking water systems across the Commonwealth with PFAS Maximum Contaminant Level (MCL) exceedances.

• For those drinking water systems exhibiting PFAS MCL exceedances where DEQ received the associated data prior to September 1, 2024, DEQ sent 185 letters notifying facilities of their obligation to self-report their use and manufacture of PFAS at the facility and/or monitor their effluent for PFAS. DEQ completed the notifications on November 25 and 26, 2024 ahead of the December 1, 2024 statutory deadline.

• DEQ developed the PFAS Source Assessment Prioritization Plan prior to the January 1, 2025, deadline. Systems were prioritized based on the degree of PFAS exceedance, and the number of customers served.

• DEQ has convened four meetings of the PEAC, two in the fall of 2024 and two in 2025, fulfilling the obligation to have two PEAC meetings in each calendar year.

In addition to meeting DEQ’s statutory obligations, DEQ made progress on other PFAS-related objectives, including:

• DEQ’s 2025 PFAS ambient water column monitoring plan supports the source assessment process by focusing on watersheds where drinking water is impacted and sampling the sites monthly.

• DEQ began implementing the Occoquan Reservoir PFAS Reduction Program (Chapter 650 of the 2025 Acts of Assembly (HB 2050) codified at § 62.1-44.34:34 of the Code of Virginia) by notifying facilities subject to the program and meeting with them to ensure each facility’s understanding of their new obligations.

• DEQ staff engaged in public outreach efforts to update elected officials, regulators, stakeholders, environmental professionals and Virginia’s citizens as whole on PFAS source reduction efforts throughout the year.