Residents' drinking water can be tested in health and epidemic prevention departments, environmental monitoring departments and drug control institutes. If you suspect that the water source is polluted by pathogens (such as parasites and dysentery), you can find an epidemic prevention station. They can detect pathogens. As for the need to check whether the elements and compounds contained in the water source meet the drinking water indicators, the environmental protection department should be consulted, and indicators such as Escherichia coli in the water will also be included in its report. If it is water from a waterworks, you can also find the Quality Supervision Bureau.

Domestic water use

Refers to the water needed by human daily life. Including urban domestic water and rural domestic water. Urban domestic water consists of residential water and public water (including service industry, catering industry, freight industry, post and telecommunications industry and construction industry), while rural domestic water includes livestock water in addition to residential water. The hygienic standard of drinking water can include two parts: legal limit refers to the legal limit to ensure that various harmful factors in drinking water do not affect people's health and quality of life; The legal code of conduct refers to the legal code of conduct of centralized water supply units in all aspects of production in order to ensure that all indicators of drinking water reach the legal limit. According to the utility theory and the principle of water resources reuse, from the point of view of water quantity, the rational reuse of water resources undoubtedly improves the utilization efficiency of water resources, but the final discharge of sewage causes the ecological and environmental benefits of water resources utilization to decline. Therefore, the measurement of domestic water efficiency should be the measurement of comprehensive benefits (economic benefits, social benefits and ecological benefits) of domestic water.