Before selecting tap water, the water source was investigated and analyzed comprehensively, which met the water quality standard of drinking water source.

As for what you said about mixed water and astringent mouth, I don't think it is like this every day. Improper handling of root work business level, and sudden floods did not play the best effect in time. It is also possible that the equipment failure affects the treatment effect. If there is a problem with the water, you can call to complain so that the management department can deal with it in time.