Question

question 2 of 10
legionella concentrations are measured by:
choose an option below
colony - forming units/milliliter
total dissolved solids
blowdown
ph level

Explanation:

Legionella is a type of bacteria, so its concentration is measured by counting viable bacterial colonies. Colony-forming units per milliliter (CFU/mL) is the standard method for quantifying viable bacteria. Total dissolved solids, blowdown, and pH level measure other water properties, not bacterial concentrations.

Answer:

colony-forming units/milliliter