rio vista (brac)

CLEANUP ACTIONS

The Army is committed to ensuring quality drinking water is provided to its Soldiers, family members, and DoD civilian workforce. The Army and other purveyors (e.g. Privatized water system partners) perform proactive sampling on its drinking water systems for PFOS and/or PFOA IAW Army Policy.

On April 26, 2024, the EPA published a final federal National Primary Drinking Water Regulation (NPDWR) establishing drinking water standards for certain PFAS under the Safe Drinking Water Act (SDWA). This rule applies to public drinking water systems and includes enforceable Maximum Contaminant Level (MCL) to include 4 ppt for PFOS and 4 ppt for PFOA. The rule provides five years for regulated public water systems to comply. The Army continues to collect necessary sampling information and is taking actions to ensure compliance with the required 5-year timeframe. For the latest Drinking Water sampling results, please see the OSD PFAS On-base drinking water database  https://www.acq.osd.mil/eie/eer/ecc/pfas/data/onbase-drinking-water.html

Final reports, points of contact, and/or site specific web links will be updated on this page as cleanup actions progress.

CERCLA is a complex, multi-phase process that provides a consistent, science-based approach across the nation for cleanup and may take years to complete. Read more about CERCLA and the phased approach here

CERCLA INFORMATION

Current CERCLA Phase: Preliminary Assessment completed. No further action is needed at this site.

DOCUMENTS

Preliminary Assessment of Per- and Polyfluoroalkyl Substances US Army Reserve Center - Rio Vista, California (September 2023)
Appendices available upon request.

CONTACT INFORMATION

For more information, contact: Public Affairs

Office phone number: (808) 656-3150

Office e-mail address:  usarmy.hawaii.pao@army.mil

Last reviewed/updated: 7/18/2025