Bottles of beer move along during bottling at Stone Brewing Co., on Wednesday in Escondido In an effort to reduce water use, the brewery is spending $1 million on expanding its $8 million wastewater treatment system installed in 2008, and aims to use only three gallons of water for every gallon of beer it produces. FALLBROOK >> Amid severe drought, the water board in this Southern California town imposed restrictions on Fallbrook Brewing Co., just as the tiny brewer doubled capacity to meet demand for its craft beers.