“如人饮水,冷暖自知。”这句话可以用来概括美国的水温与水质。笔者到美国后,发现美国人通常不喝热水,也没有把自来水烧开后再喝的习惯,就连餐馆里随饭菜一同提供的饮用水,也是直接从水龙头接出来的。笔者于是很好奇,想了解美国是如何保证其饮用水品质的。 “If people drink water, cold and warm self-knowledge. ” This sentence can be used to sum up the water temperature and water quality in the United States. When I came to the United States, I discovered that Americans usually did not drink hot water and did not have the habit of boiling tap water. Even the drinking water provided with meals in the restaurant was taken directly from the faucet. The author was very curious and wondered how the United States ensured the quality of its drinking water.