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1 2010年洛杉矶市的供水需求 1.1 洛杉矶市的供水水源洛杉矶市有3个主要的水源来满足城市的需要。最好的水源首推洛杉矶水管道系统,因其成本递增最慢。除了用电和化学用品的一点花费之外,在固定投资回收之后,水的输送几乎不再花什么钱不过在过去5年由于输水量变化较大,已从每1233m~3 144美元增加到499美元。第二个省钱的水源是本地的地下水,它的成本改变也主要取决于能开采的地下水总量。过去五年其成本在每1233m~3 92美元到165美元之间变化
1 2010 Water Supply Demand in Los Angeles City 1.1 Water Supply Sources in Los Angeles The City of Los Angeles has three major water sources to meet the needs of the city. The best source of water devaluation Los Angeles Water Pipeline system, because of its slowest cost increase. In addition to the cost of electricity and chemical supplies, water transport is hardly any more money after fixed-capital investment but has risen from 1233 to 3 144 U.S. dollars in the past five years 499 dollars. The second source of water savings is local groundwater, and its cost change also depends largely on the total amount of groundwater that can be mined. The cost over the past five years varies from 1233 to 329 US dollars to 165 US dollars