Is it safe to drink tap water in the U.S?
美国的自来水能安全地喝吗?
 

I'm from Australia and my partner is from America (Texas, specifically). We have conflicting views on whether tap water is safe to drink.
He's afraid of the chemicals and pollutants (chlorine, ammonia) - making people sick, causing long term problems such as cancer. He's been drinking from bottled spring water, because it's what everyone has told him to.
We have looked into varying sources and there has been opposing views on each side. Would love more clarity.
Thank you.
  
我澳大利亚人,我的伴侣是美国人(具体来说是得克萨斯州的)。我们对自来水是否能安全饮用意见不一。 
他担心水里的化学物质和污染物(比如氯、氨什么的)——会让人生病,还可能引发癌症等长期健康问题。所以他一直喝瓶装泉水,因为身边所有人都这么建议他。 
我们查了不少资料,发现两边的观点完全相反。希望能更清楚地了解。