Question
Download Solution PDFWhat is the maximum permissible limit of turbidity in potable water as per the Bureau of Indian Standards (BIS)(IS -10500 ∶ 2012)?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 5 NTU.
Key Points
- According to the Bureau of Indian Standards (BIS)(IS -10500 ∶ 2012), the maximum permissible limit of turbidity in potable water should be 5NTU
- Turbidity levels should be maintained between 1 and 5 NTU to keep the desirable drinking water quality as per the Bureau of Indian Standards.
- Turbidity in water means Turbidity is the measure of relative clarity of a liquid.
- Turbidity is produced by suspended particulate matter like plankton, inorganic and organic matter.
Additional Information
- Turbidity is measured in NTU: Nephelometric Turbidity Units.
- The instrument used for measuring it is called a nephelometer or turbidimeter.
- It measures the intensity of light scattered at 90 degrees as a beam of light passes through a water sample.
- It is essential to eliminate the turbidity of water in order to effectively disinfect it for drinking purposes.
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