This agreement provides funding to orange county water district to implement its safe drinking water project to install an ION exchange treatment system at city of santa ANA wells 27 and 28 to…

EPA Region 9 awarded Orange County Water District a $1.75 million Cooperative Agreement on March 1, 2026, under the Congressionally Mandated Projects program (CFDA 66.202) to design and construct an ion exchange treatment system at the City of Santa Ana's Wells 27 and 28 to remove perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) contamination to less than 2 parts per trillion (the current non-detect limit).

The project encompasses design activities including development of a stormwater pollution prevention plan, and full construction of the PFAS treatment system including ion-exchange treatment vessels, storage tank, concrete pad, brine tank, water meters, piping and appurtenances, site preparation, grading, tank construction, paving and piping connections, retaining wall modifications, generator installation, and architectural coating activities. The work also includes mobilization, demobilization, and project cleanup. The system will treat groundwater to ensure compliance with per- and polyfluoroalkyl substances drinking water regulations as directed in the 2024 Consolidated Appropriations Act. Performance extends from March 1, 2026 (preaward costs approved retroactively to this date) through March 31, 2028, at Wells 27 and 28 in California. The obligated amount is $2.187 million. No sub-recipients are included.

This agreement provides funding to orange county water district to implement its safe drinking water project to install an ION exchange treatment system at city of santa ANA wells 27 and 28 to remove perfluorooctanoic acid (pfoa) and perfluorooctanesulfonic acid (pfos) to less than 2 PPT (the current non-detect limit) and ensure the treated groundwater can be safely served to the city of santa ANA's consumers and customers in compliance with the per- and polyfluoroalkyl substances (PFAS) drinking water regulations and as directed in the 2024 consolidated appropriations act or as identified in an approved technical correction if one has been approved for this project. This assistance agreement provides full federal funding in the amount of $1,750,000. Preaward costs are approved back to 03/01/2026. See terms and conditions.activities:the activities to be performed include the execution and implementation of a drinking water infrastructure construction project. Workplan activities include but are not limited to the following: project design including the development of a stormwater pollution prevention plan, construction of per- and polyfluoroalkyl substances system, storage tank, concrete pad, brine tank, water meters, piping and appurtenances, ION-exchange treatment vessels, ION-exchange resin, site preparation, grading, tank construction, paving/piping connections, retaining wall modifications, implementation of mitigation measures, generator, architectural coating activities, and mobilization, demobilization and cleanup of entire project.subrecipient:no subawards are included in this assistance agreement.outcomes:the anticipated deliverables include a per- and polyfluoroalkyl substances and perfluorooctanoic acid removal ION exchange system at city of santa ANA wells 27 and 28. The expected outcomes include water quality improvement of groundwater and effective removal of per- and polyfluoroalkyl substances and perfluorooctanoic acid contaminants from city of santa ANA groundwater and an increase in safe drinking water supply for communities in the city of santa ANA. The intended beneficiaries include over 310,000 residents of santa ANA and all other business customers.