How to judge whether the water quality of the sparkling water faucet is safe?

To determine whether the water quality of the sparkling water faucet is safe, you can start from the following aspects:
Sensory judgment
Look at the appearance: Observe whether the water is clear and transparent, and whether there is turbidity, different colors or visible impurities. If the water appears yellow, brown, black and other abnormal colors, or there is suspended matter, precipitate, then the water quality may have a problem.
Smell: Normal water should be odor-free. If you can smell the abnormal smell of pungent, rancid, sterilized water and so on when you open the faucet, the water quality is likely to be polluted. For example, a rancid smell may be caused by bacterial growth, and the excessive smell of sterilized water may be caused by the excessive amount of residual chlorine in the water.
Taste: Taste the water in small amounts, making sure it is drinkable. If the water has a bitter, salty and other abnormal taste, it indicates that the water quality may have changed, and there is a security risk. However, taste can only be used as an auxiliary judgment method, and it cannot be completely relied on to determine the safety of water quality.

Professional testing
Use water quality testing tools: you can buy professional water quality testing kits or water quality testing pens for testing. Common detection indicators include pH value, residual chlorine content, heavy metal content, total number of bacteria, etc. For example, through the pH detection reagent to detect the pH of water, the pH value of normal drinking water is generally between 6.5 and 8.5; Use the residual chlorine detection kit to detect the residual chlorine content in water, and the residual chlorine content in general drinking water should be between 0.3 and 4 mg/l.
If you are very concerned about water quality safety or need accurate and detailed water quality information, you can collect water samples and send them to professional water quality testing institutions for comprehensive testing. These institutions can detect the specific content of various harmful substances in water, such as lead, mercury, arsenic and other heavy metals, pesticide residues, microorganisms and other indicators, so as to accurately determine whether the water quality meets the safety standards.
Observe the effect of use
Observe skin reaction: After washing hands and face with sparkling water, observe whether the skin has redness, itching, dryness and other uncomfortable reactions. If the skin is abnormal, it may be that the water quality has stimulated the skin, indicating that the water quality may be unsafe.
Check the scale of the equipment: After a period of use, check the scale of the surface of the equipment in contact with water, such as taps, sinks, kettles, etc. If the scale is formed too fast and too much, it may mean that the mineral content of the water is too high, or the water quality has changed. At the same time, if the faucet bubbler is found to be easily blocked, it may also be related to poor water quality.