Biology · Environmental Issues
What does a high level of total coliform bacteria in a water source primarily indicate?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Proper purification and suitability of the water for drinking
- 2A high concentration of chemical industrial pollutants
- 3An excess of essential dissolved minerals like calcium and magnesium
- 4Contamination by disease-causing microbes from human or animal waste✓
Correct answer
Contamination by disease-causing microbes from human or animal waste
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