Write down the qualities of drinking water?

1. Physical properties:

- Color: Clear and free from turbidity.

- Odor: Pleasant and free from objectionable odors.

- Taste: Refreshing and free from objectionable tastes.

- Temperature: Cool and refreshing, typically between 4°C and 10°C.

2. Chemical properties:

- pH level: Slightly alkaline, typically between 6.5 and 8.5.

- Hardness: The amount of dissolved calcium and magnesium minerals, which can affect the taste and texture of water.

- Total dissolved solids (TDS): The total amount of dissolved minerals, salts, and organic matter in water.

- Specific contaminants: The presence of specific contaminants, such as heavy metals, bacteria, viruses, and organic chemicals, must be within safe limits set by drinking water regulations.

3. Microbiological properties:

- Free from pathogenic microorganisms: Drinking water should be free from bacteria, viruses, and other microorganisms that can cause disease.

- Coliform bacteria: The presence of coliform bacteria, which are indicative of fecal contamination, should be absent or below a certain threshold.

4. Radiological properties:

- Radionuclides: The concentrations of naturally occurring or human-made radioactive substances, such as uranium and radon, should be within safe limits set by drinking water regulations.

5. Aesthetics:

- Drinking water should be aesthetically pleasing, with acceptable color, odor, and taste.

It is important to note that drinking water standards and regulations may vary among different countries and regions, so it is always best to refer to the local authorities for specific quality guidelines.