Question

How is water collected for bacteriological examination during a disease outbreak? 

• A. Collect water from already leaking taps
• B. Before collecting, let water flow for at least 1 minute
• C. Water sample container is kept close to the tap avoid spillage
• D. Collect from a gentle stream of water to avoid splashing

Answer 1

The Correct Option is D

During a disease outbreak, it is crucial to ensure accurate bacteriological examination of water samples. Proper collection techniques help prevent contamination and ensure reliable results. Follow these steps for collecting water:

• Choose a proper tap or outlet, avoiding those that are already leaking. Existing leaks can introduce contaminants, affecting the sample integrity.
• Let the water flow for at least 1 minute before collecting the sample. This helps flush out stagnant water and contaminants that may have settled in the pipes.
• Hold the water sample container close to the tap but maintain a careful balance to avoid spillage and unnecessary exposure to external air contaminants.
• Most importantly, collect the water from a gentle stream to avoid splashing. Splashing can introduce external contaminants and disrupt the sterility of the sample.

This method ensures a higher accuracy in detecting bacterial pathogens, essential during an outbreak investigation.