Water distribution systems contain
A) very few bacteria or other microorganisms.
B) biofilms that may harbor opportunistic pathogens.
C) numerous grazing protists that consume bacteria.
D) biofilms that may harbor opportunistic pathogens and numerous grazing protists that consume bacteria.

Question

Quizplus · Accepted Answer

Water distribution systems often contain biofilms, which are communities of microorganisms, including bacteria, that adhere to surfaces. These biofilms can harbor opportunistic pathogens, which are microorganisms that can cause disease in individuals with weakened immune systems. Additionally, these systems can contain numerous grazing protists, which are a type of microorganism that feeds on bacteria, helping to control bacterial populations within the biofilm and the water distribution system as a whole.

Water Distribution Systems Contain