Your city municipality issues a boil order for drinking water. which of the following would be the most likely reason for this? a) fecal coliforms were discovered in the water. b) lead was discovered in the water. c) nitrates were discovered in the water. d) chlorine was discovered in the water.

a) Fecal coliforms were discovered in the water.

Because fecal coliform is an indicator microorganism found in water.

Further Explanation

Indicator microorganisms are a group of microorganisms that are used as an indication of water quality. Indicator microorganisms have been used to detect and calculate fecal contamination in water, food, and other samples.

Fecal coliform

Used to detect fecal pollution. It is a thermotolerant bacteria that can adapt to the way of protein stabilization at the temperature in the digestive tract. Fecal coliform can ferment by producing acids and gases at a temperature of 44.5 ° C. Fecal coliform has a strong correlation with fecal pollution of warm-blooded animals. To detect E. coli in fecal coliform more specifically MUG enzymes that will fluoresce with UV light can be used.

Boiling tap water is a method used to kill harmful bacteria and microorganisms that may be present from drains. Each house has a different source of water such as PAM or well. The technique of boiling tap water can kill disease-causing microorganisms such as giardia and cryptosporidium.

However, not always boiling tap water can kill all bacteria. Several types of bacteria do not die even though they have gone through the boiling process.

Besides, chlorine is also not lost through the process of boiling tap water. The heating point for killing chlorine must be very high than the temperature used to boil tap water. But in truth, boiling tap water may not necessarily be able to remove chemicals that may be harmful to the body.

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definition of Indicator microorganisms

definition of Fecal coliform

Details

Grade: High School

Subject: Health

keywords: Indicator microorganisms, Fecal coliform

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