How to easily identify the quality of water quality and whether it can be drunk?

The simple way is to: 1 Look at the water color: clean water is transparent and colorless.

For example, the water is brownish-yellow, and it mostly contains saprophyte matter; yellowish-brown, it contains more iron and manganese; yellow-green, it is polluted by algae matter; If it is blue, it contains hydrogen sulfide. During the inspection, a white porcelain bowl should be used to hold water for easy observation. 2 Smell the water:

Fill half a bottle of water in a clean, small-mouthed bottle, cap and shake, then immediately open the lid and smell it. Odorless, proving that the water is clean. 3 Taste the water:

The taste of the water can be tried with the tongue. Clean water is odorless. The water contains a lot of organic matter with a sweet taste; Contains sodium chloride with a salty taste; The water containing more calcium sulfate has an astringent taste, the water containing more magnesium sulfate has a bitter taste, and the water containing more iron has a metallic taste; Contains hydrogen sulfide with rotten egg smell.

But this method is not often adopted. 4 Measure water temperature: The water temperature of surface water often changes with air temperature, but the fluctuation range is not very large.

If the water temperature rises suddenly, it may become polluted. 5. Observe the sediment: The sediment is a solid that can be partially precipitated in water.

The water can be placed in a clear glass bottle and allowed to stand. The less sediment, the better the water quality. 6 Check pH:

The general surface water pH is between 6 5 9. When the pH value rises, it means that the water is contaminated with alkaline substances; When lowered, it indicates that the water is contaminated with acidic substances. 7 Test with paper:

Drop water on a white paper, and the fewer spots left after drying, the less impurities there are in the water.

1. Look: Take a glass of water with a transparent glass, look at the light to see if there are fine substances suspended in the water, let it stand for three hours, and then observe whether there is sediment at the bottom of the cup.

2. Smell: Use a glass to get a glass of water as far away from the faucet as possible, and then smell it with your nose to see if there is a smell of bleaching powder (chlorine) in the section wheel, if you can smell the smell of bleaching powder (chlorine), it means that the residual chlorine in the water from Tonghu is excessive.

3. Taste: Drink hot boiled water, whether there is a smell of bleaching powder (chlorine), if you can smell the smell of bleaching powder (chlorine), it means that the residual chlorine in the tap water exceeds the standard.

4. View: Make tea with tap water, observe whether the tea turns black after overnight, if the tea turns black, it means that the iron and manganese in the tap water are seriously exceeded, and a reverse osmosis water purifier with the function of removing iron and manganese filter should be used for purification.

5. Product: Drink boiled water, the taste has an astringent feeling, if there is, it means that the hardness of the water is high, and the water softener should be equipped with food-grade ion exchange resin for softening treatment.

6. Check: Check the water heater and boiling kettle at home, whether there is a layer of yellow scale on the inner wall, if there is, it also means that the hardness of the water is high, (the content of calcium and magnesium salt is too high), and you should also hold the water softener equipped with food-grade ion exchange resin for softening treatment as soon as possible.