Filter Multimedia and Underdrain Nozzle Replacement Project

The Central Coast Water Authority is preparing to undertake a critical infrastructure project at the Polonia Pass Water Treatment Plant to replace the multimedia filter media and underdrain nozzles in four of its eight filtration units. These filters are essential to the treatment process, as they remove suspended particles from settled water by passing it through layers of granular activated carbon and sand before it flows to the chlorine contact basin. Deterioration of the filter media and underdrain system can lead to clogging, increased head loss, and inefficient backwash cycles, jeopardizing both operational efficiency and regulatory compliance. The scope includes complete removal and replacement of both filter media layers and all underdrain nozzles in the targeted filters, along with repair and leveling of concrete surfaces in the filter basins and backwash troughs where feasible to restore optimal function. The project is forecasted to be solicited in May 2026, with the Central Coast Water Authority as the lead agency based in California. The work will take place at the treatment plant located in the 93461 zip code area, and all communications regarding the procurement should be directed to Peter Thompson, Executive Director, via the provided contact information. While this is a forecasted notice and not yet an active solicitation, the initiative underscores CCWA’s commitment to maintaining reliable water treatment capacity, ensuring continued safe delivery of State Water Project water to its retail providers and end users within the county. No set-aside or NAICS code has been specified at this stage, and the project remains in the planning and anticipation phase.