City of Napa Water System 30-Year Capital Improvement Master Plan

The City of Napa has established a 30-year Water System Master Plan to guide the maintenance, upgrades, and enhancement of its water infrastructure across watershed supply, water treatment, transmission systems including storage tanks and pump stations, and distribution networks such as mains and meters. The plan is structured into three distinct timeframes: near-term improvements from 2026 to 2030, mid-term upgrades from 2031 to 2035, and long-term projects spanning 2036 through 2055 as a consolidated phase. These efforts prioritize system redundancy and reliability, ensuring resilient operations without accounting for demand increases driven by projected population or development growth. The plan outlines a sustained, strategic investment timeline to uphold service quality, regulatory compliance, and infrastructure longevity. The initiative is led by the City of Napa with primary technical oversight provided by its Senior Civil Engineer, Doug DeMaster, and supported by Senior Environmental Planner James Alcorn of ICF. All communications and inquiries regarding the plan should be directed to the designated contact information, including the email watermasterplan@cityofnapa.org and phone number 707-257-9521. The plan was officially posted on June 8, 2026, and is geographically scoped to serve the City of Napa, California, with no set-aside provisions or NAICS code specified. The plan represents a long-term financial and operational commitment to securing the city's water future through systematic infrastructure improvements rather than expansion based on growth projections.