Maximum permissible turbidity in potable water is _____________ ppm?
Correct answer: B. 10
- A. 1
- B. 10
- C. 250
- D. 1000
Explanation
The traditional permissible turbidity limit stated for potable water in such process-environment texts is 10 ppm. Higher values indicate excessive suspended or colloidal matter and make disinfection less reliable.
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