Cannot be used for cooking.
Whether it's a solar water heater, gas water heater or electric water heater, most manufacturers will indicate "not intended for consumption". in their product manuals. Although the water entering the water heater is clean tap water, the materials of the water heater's supporting components (such as metal pipes, etc.) can often contain harmful poisons such as lead , cadmium, manganese and arsenic.
In addition, the temperature of the heated water is generally between 40°C and 70°C, which is conducive to the reproduction of bacteria and viruses. Additionally, water heaters with water storage features have a water storage tank. Over time, bacteria will breed and previously heated water will become contaminated. The water from the water heater is therefore not drinkable!
The water from the water heater is constantly flowing in and out, and in order to avoidBefore the water heater burns dry, the water inside cannot be drained out at the same time. We all know that there is water there. that has been boiled repeatedly cannot be drunk because water that has been boiled repeatedly will produce nitrite and is not good for cooking.
Detailed information
Usually, after each use of the electric water heater, a certain amount of water will remain at the bottom of the tank, which can be reused . Due to water quality problems, the heated water scales on the inner wall of the electric water heater and around the electric heating rod, resulting in microorganisms and impurities in the water a place to breed and again pollutes the water quality in the machine.
There are indeed health risks when people use such water for bathing, especially children, elderly people.Elderly or people with relatively weak resistance, or people suffering from skin diseases themselves, who will have obvious itchy skin and red spots. and other phenomena. Some people also have the habit of using water from water heaters to brush their teeth and rinse their mouths, which is even more harmful.
In addition, when the electric water heater generates scale, it will affect the use effect, slow heating, high power consumption and shorten the service life.
Since the electric water heater is so dirty, why is the water still leaking? Lu Jianguo said that the mouth of the hot water pipe is at the top of the machine and the mouth of the cold water pipe is at the bottom. When used, the cold water pipe continues to flow and the hot water is pressed upwards. cold water. Water flows along the hot water pipe and scale is precipitated to the bottomof the coating.
It is best to clean the electric water heater every 3 to 6 months. It is best to ask a professional to come and thoroughly clean the scale inside the water tank every 1 to 2 years.
Reference:
People's Daily Online - Electric water heaters store a lot of dirty water and the water will stay in the inner tank every time that they are used. up