There are 19 municipal water departments and special water districts that are members of OCWD and pump groundwater from the basin. The agencies, also known as groundwater producers, provide a combination of groundwater and imported water to their residents and businesses. Monthly water bills for customers in north and central Orange County are paid to these retail agencies.
Retail agencies establish the price of water delivered to customers. The rate charged for water is impacted by multiple factors, including the cost of groundwater; the cost of imported water; the cost to construct, operate and maintain pipelines, reservoirs and pumps to deliver water to homes or businesses; and the administrative cost of operating a retail water system. Retailers' rates can vary depending upon the age of the water system, how much groundwater is used versus more expensive imported water and other factors. For this reason, OCWD attempts to maximize the amount of groundwater available to retail agencies, while sustainably managing the basin.
The Engineers Report provides data on how much each city or agency pumps in a year.