The HBMWD operates two separate and distinct water systems: a domestic water system which supplies treated drinking water; and an industrial system which supplies untreated raw water to large industrial users for industrial purposes.

The HBMWD supplies treated drinking water on a wholesale basis to seven municipal agencies in the greater Humboldt Bay region. Those customers are: 

• City of Arcata
• City of Eureka
• City of Blue Lake
• Fieldbrook Glendale Commlunity Services District
• Humboldt Community Services District (HCSD)
• Manila Community Services District (MCSD)
• McKinleyville Community Services District

HBMWD works very closely with its seven wholesale municipal customers. We value our relationship with them. A strong partnership between HBMWD and its municipal customers is necessary to ensure delivery of a reliable supply of safe drinking water for the communities we collectively serve.