he Claude “Bud” Lewis Carlsbad Desalination Plant has served more than 100 billion gallons of water over the past seven years — a milestone reached in late October, the San Diego County Water Authority and plant owners announced Tuesday.

The plant, which produces 50 million gallons of drinking water daily, enough for 400,000 homes meeting 10% of San Diego County’s water demand, is the largest in the United States.