Potable water is unfit for consumption or recreation because of the high levels of microbial contaminants present.
Correct Answer:
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Q12: The presence-absence test is a modification of
Q13: Coliforms and fecal coliform are often differentiated
Q14: Slow sand filtration effectively removes _.
A)Giardia lamblia
B)Cryptosporidium
Q15: What is the target threshold to meet
Q16: Rapid sand filtration,used in many water purification
Q18: Potable water
A)requires boiling to make it safe
Q19: Chlorination alone will usually suffice to inactivate
Q20: The membrane filter technique can be used
Q21: Activated sludge is used in which sewage
Q22: Which of the following is not an
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