Operates and maintains four reservoirs, nine wells, two treatment facilities, and a distribution system for all residential, commercial, and industrial customers. Services on the distribution system are metered. All active wells are provided chlorination, fluoridation and aeration treatment. Water is also provided for fire protection services with hydrants for Centralia Fire Department and Lewis County Fire District Number 12 set on Centralia's water mains.
Seven booster pump stations re-pump water from the central zone to seven pressure zones at higher elevations. Water service for City customers in the various pressure zones are distributed through approximately 135 miles of distribution pipe, ranging in diameter from 2 to 18-inch.