How to judge the water quality? These "degrees" must be clear

How to judge the quality of water? Sometimes customers will ask about our filter element, how often the RO membrane is usually replaced, we usually say that this depends on your usage, the quality of your water, and specific analysis of specific issues. So how can the water quality be judged? Listen to experts tell you that you should judge the quality of water from these aspects.

The smell of water

Water odor: the odor emitted by the reproduction and decay of aquatic animals, plants, or microorganisms in the water; the odor emitted by the decomposition and decomposition of organic substances in the water; water soluble gases such as SO2, H2S, NH3; solubility The odor of salt or soil, the odor of petroleum, phenols, etc. contained in the industrial wastewater discharged into the water body, and the odor of chlorine added during the disinfection process.

Turbidity of water

Turbidity of water: Because water contains suspended and colloidal particles, the degree of turbidity that is originally colorless and transparent water is called turbidity. Turbidity is an optical effect. It is the degree to which light is hindered when passing through the water layer. It indicates the ability of the water layer to scatter and absorb light.

Chroma of water

The chromaticity of water: The chromaticity of water is an indicator for quantitative determination of the color of natural water or various treated water. The color is caused by humus, organic or inorganic substances dissolved in water. Industrial wastewater may also produce various colors in water bodies. For example: clay-yellow, iron oxide-brown, sulfide-light blue, algae-green, decaying organic matter-dark brown.

Water conductivity

Water conductivity (T.D.S): The conductivity of water is the reciprocal of the resistance of water, and it is usually used to express the purity of water. Because water contains various soluble salts, and exists in the form of ions. When there are electrodes in the water, these ions can make the water conduct electricity, so the degree of water conductivity is called conductivity.

Acidity and alkalinity of water

The acidity and alkalinity of water: The negative value of the logarithm of the hydrogen ion concentration of the water indicates the acidity and alkalinity of the water, that is, the pH value of the water. Less than 7 is alkaline, equal to 7 is neutral, and greater than 7 is acidic.

Water hardness

Water hardness: some metal cations in the water combine with some anions. When the water is heated, it is easy to form scale due to evaporation and concentration, which adheres to the heated surface and affects heat conduction. We take the total concentration of these metal ions in the water It is called the hardness of water. Since the concentration of other metal ions in water is very low, the concentration of calcium and magnesium ions in water is usually regarded as the hardness of water.


Are you confused by these professional terms? The following editor will introduce a few simple and practical tips to distinguish water quality.

1. Look: Fill a glass of water with a glass with higher transparency, and look at the light for any fine substances suspended in the water? Exhaust for three hours, and then observe whether there is sediment at the bottom of the cup? If it shows that the suspended impurities in the water are seriously exceeding the standard! A water purifier must also be used for terminal treatment.

2. Smell: Take a glass of water as far as possible from the faucet, and then smell it with your nose. Does it smell of bleach (chlorine)? If you can smell it, it means that the residual chlorine in the tap water exceeds the standard! A water purifier must also be used for terminal treatment.

3. Check: Check whether there is a layer of yellow dirt on the inner wall of the water heater and kettle at home? If so, it means that whoever has too high hardness should also use a softening water purifier as soon as possible to soften it! Note: Water with too high hardness can easily cause scaling of water heater pipes and burst pipes due to poor heat exchange.

Have you learned all these simple and practical tips?