Suggest cooking and drinking. Besides, boiled water is more nutritious and saves money than pure water. The so-called mineral water is generally drunk less, and private mineral water enterprises are not as good as tap water enterprises. At least in the cost of water production, most state-owned tap water enterprises are more formal (not absolute) than mineral water enterprises. After all, tap water is a monopoly industry, and the cost can be offset by price adjustment. After all, with the national money, no one will have a hard time with themselves. Water supply enterprises (except those with poor management) that had water quality accidents before were all private enterprises or joint ventures. The same is true for mineral water enterprises.