What are the water quality testing standards?
1. Chroma: If the chroma of drinking water is more than 15 degrees, most people can detect it, and when it is more than 30 degrees, people feel disgusted. The standard stipulates that the color of drinking water should not exceed 15 degrees.
2. Turbidity: It is an expression of the optical properties of water samples. It is used to indicate the degree of clarity and turbidity of water. It is one of the most important indicators to measure the goodness of water quality. It is also used to evaluate the purification efficiency of water treatment equipment and evaluate water treatment. Important basis for technical status. The reduction of turbidity means that the content of organic matter, bacteria, viruses and other microorganisms in the water body is reduced, which can not only improve the disinfection and sterilization effect, but also reduce the amount of halogenated organic matter.
3. Odor and smell: The production of water odor is mainly due to the presence of organic matter, which may be caused by increased biological activity or industrial pollution. The change in the normal odor of public water supply may be a signal of a change in raw water quality or inadequate water treatment.
4. Visible to the naked eye: mainly refers to particles or other suspended substances present in the water that can be observed with the naked eye.
5. Residual chlorine: Residual chlorine refers to the amount of chlorine remaining in the water after being sterilized by chlorination. The continuous sterilization ability in the water can prevent the self-contamination of the water supply pipeline and ensure the quality of the water supply.