美国的自来水中， 热水是非食用水， 不可拿来做饭或饮用。 冷水才能拿来喝或者做饭。 长期食用自来水管道里的热水会对健康造成极负面影响。 极大提高早期患癌症的概率、患智障等 (铅中毒)。

见此：

http://water.epa.gov/drink/info/lead/index.cfm

http://water.epa.gov/drink/contaminants/basicinformation/lead.cfm

“Use only water from the cold-water tap for drinking, cooking, and especially for making baby formula. Hot water is likely to contain higher levels of lead. The two actions recommended above are very important to the health of your family. They will probably be effective in reducing lead levels because most of the lead in household water usually comes from the plumbing in your house, not from the local water supply.”

（饮水，做饭，特别是混合婴儿奶粉只用冷水管的水。热水中很可能有大量的铅。只要按这两条来做，（血液里的）铅含量很可能会大大降低因为住房水中的铅来自房屋的暖水系统而不是附近的水源。）

lz我其实热水，冷水那边的水都不直接喝

但是烧水，煮饭经常将就热水那边的。。。

悲崔阿