Question

Beaches are monitored to protect public health. Waterborne pathogens can cause illnesses. Which of the following ways can pathogens enter coastal waters?
Leaking sewer pipes and untreated wastewater
Precipitation through the water cycle
The changing of low tide to high tide
Through the interactions of marine organisms and plants

Answer 1

Waterborne pathogens can enter coastal waters via leaking sewer pipes and untreated wastewater.

Sewage and untreated wastewaters are filled with microbes some of which are capable of causing diseases to humans and livestock if given the opportunity. Hence, the seeping of these waters into coastal water is a risk to humans who might want to swim or make use of coastal waters.

Precipitation, changing of tides and the interactions of marine organisms and plants will ordinarily not form pathways through which pathogens can gain access to coastal waters.

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