Due to the low level of productivity, the earliest way for human beings to develop and utilize water resources is to directly use surface water in rivers and lakes.

The source of surface water mainly depends on natural precipitation, so in the drought year, when the land is thousands of miles away, rivers and lakes are dry, human beings will have difficulty in using water, and when they are serious, they will migrate by water.

The water in the well, drinking more can eliminate heat and detoxification, is conducive to urinating red heat, too astringent, drunk to death, in addition, if there is no discomfort, drinking more will also be good for the body. However, perennial drinking, susceptible to kidney stones, rural areas have more kidney stones. This is why sediment filters for well water are needed.

Well water sources lack detailed exploration analysis. Considering the complexity of the geological structure, well water is susceptible to the influence of underground veins and heavy metals exceeding the standard, and most of the untreated well water is difficult to meet the national drinking water standards, even in areas with excellent ecological environment.

It can be seen that the quality of well water mainly depends on the environment, for people living in the city, there is no condition for using well water, especially in industrial cities, tap water is your only choice.

For coastal areas, industrially developed areas, densely populated areas, underground resource-rich areas, and plain areas, tap water is obviously more hygienic and safe, and the operation of urban water companies is more standardized, water quality is guaranteed, and drinking tap water is advocated, and drinking well water is avoided as much as possible.