Question

what is the maximum permissible limit (ISI) of lead (PB) in drinking water?

a) 0.05 ppm b) 0.01 ppm c) 0.5 ppm d) 0.1 ppm​

Answer 1

Answer:

answer is 0.01ppm of lead is permissible

Explanation:

Answer 2

The maximum permissible limit (ISI) of Lead (Pb) in drinking water is 0.05 ppm(option a).

Why do we need maximum permissible levels of elements in drinking water?

• Water contamination is a serious issue that affects millions worldwide.
• Chemical pollutants are a major source of water pollution.
• The discharge from chemical industries directly into water bodies or running off of pesticides from fields can be causes of chemical pollution.
• Surpassing the permissible levels of some elements in a water body can have the following adverse effects:

1. Change in pH of the body
2. Water becomes undrinkable
3. Polluted water causes diseases
4. Marine life is adversely affected

What happens if Lead surpasses its maximum limit in a water body?

• The maximum permissible limit of lead in drinking water is 0.05 ppm.
• If the quantity of lead passes this limit it can have harmful effects such as cardiovascular issues, kidney malfunction, reproductive issues, etc.
• Lead is a toxic metal that interferes with the proper functioning of many enzymes in our body, leading to their malfunctioning.

Thus, lead(Pb) should not exceed 0.05 ppm in drinking water.

Hence, option a) 0.05 ppm is correct.