According to a report, "In the past few days, on WeChat, it has been said that putting a toilet block into a toilet tank is likely to cause water to flow backwards. As a result, is the tap water not polluted?" Recently, Mr. Cao told the public reporter.
Mr. Cao said that the most annoying thing when cleaning his own home is to brush the toilet. It takes time and effort to endure the smell. He has always bought some toilet blocks and put them into the toilet tank, which is simple and convenient. "I saw a sudden news in WeChat yesterday, and I began to wonder. If it is true, isn't the tap water polluted?" he said.
In this regard, the reporter interviewed Ms. Sun, who has been operating sanitary ware for many years, she said that under normal circumstances, the water in the toilet tank will not reverse, because each tank has a pressure lever in the water tank. Wait until the water is full and the valve will be automatically pressed to prevent backflow. However, if the valve fails, especially after the water is stopped, the water supply pipe is empty. At this moment, when the valve or the faucet is opened, a strong suction will be generated in the water supply pipe, and the water in the water tank will flow back into the water supply. But this is rare.
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