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how many samples must be taken weekly from a raw water supply and tested for fecal and total coliforms for a water supply serving 20,000 people?
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how many samples must be taken weekly from a raw water supply and tested for fecal and total coliforms for a water supply serving 20,000 people?

User GianArb
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Answer:For example, one guideline might suggest taking one sample for every 1,000 people served. In your case, serving 20,000 people, you might be advised to take approximately 20 samples per week.

Explanation:

User Rafaelzlisboa
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