Your tap water is too hard. Get a water softener.

自来水水质太硬，请购买一台软水器。

Surface active agent, auxiliary, water softener and whitener.

表面活性剂、助剂、软水剂、增白剂。

The water softener comprises a water softener body on which penetrated holes are formed;

软水剂，包括软水剂本体，软水剂本体上面具有穿透 的孔；

This shows that the tea water in order to select suitable water softener or a temporary hard water.

这表明，茶叶水，以选择合适的软水或暂时硬水。

"A water softener may help your plumbing, but it's hard water that is better for your health," she says.

“也许软水能使水管畅通，但硬水更有益于健康。”她说。