Drinking water filtered by a pure water machine for a long time is safe, but the following aspects need to be noted:

1. Lack of minerals: The water filtered by the pure water machine removes impurities and soluble substances in the water, including some minerals and trace elements. Therefore, long-term consumption of water filtered by pure water machines may lead to a lack of essential minerals and trace elements in the body. Therefore, it is recommended to add mineral rich foods or drinks appropriately in daily consumption.

2. Low pH value: Some pure water machines may filter out water with a low pH value, which may have adverse effects on the body. It is recommended to use a pure water machine with pH adjustment function, or test the pH value of the water before drinking and adjust it appropriately.

3. Water quality stability: Due to the fact that the water filtered by the pure water machine removes most of the impurities and soluble substances in the water, the water quality is relatively unstable and easily affected by external factors, leading to changes. It is recommended to keep the containers and environment clean and hygienic when storing and drinking water filtered by pure water machines, and avoid contamination.

Overall, long-term consumption of water filtered by pure water machines is safe, but attention should be paid to the above aspects to maintain a balance and stability of drinking water, in order to maintain physical health.

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