A recycled water distribution system shows increasing Legionella concentrations with distance from the treatment plant. What is the MOST likely operational factor contributing to this trend?

Question

Answer

Residual chlorine decay and warm water temperatures.

Answer

Low assimilable organic carbon in the system.

Answer

UV disinfection causes Legionella to thrive.

Answer

Insufficient iron in pipe materials for bacterial growth.

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A recycled water distribution system shows increasing Legionella concentrations ...

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