The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb , 40 ppb , 100 ppm and 0.2 ppm , respectively. This water is unsuitable for dr

Question

The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb , 40 ppb , 100 ppm and 0.2 ppm , respectively. This water is unsuitable for drinking due to high concentration of:-

TestHub · Accepted Answer

Given concentrations are: Fluoride = 1000 ppb = 1 ppm, Lead = 40 ppb = 0.04 ppm, Iron = 0.2 ppm, and Nitrate = 100 ppm.
Fluoride and iron are within acceptable limits, while nitrate is present in a very high concentration.
Excess nitrate in drinking water can cause health problems such as methemoglobinemia (blue baby syndrome).
Hence the water is unsuitable due to high nitrate concentration.

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