Which of the following is a common preventative measure against waterborne pathogens?

Boiling water is a highly effective preventative measure against waterborne pathogens. The process of boiling water involves raising the temperature to a point where most pathogens, including bacteria, viruses, and parasites, are killed. This method is particularly useful in situations where water quality may be compromised, such as during natural disasters or when traveling to areas with inadequate water treatment facilities. Boiling is a reliable practice because it does not require special equipment or chemicals and is accessible to many people.

While adding soap can assist in cleaning surfaces or hands effectively by removing dirt and grease, it does not specifically target pathogens in drinking water. Replacing pipes can help prevent contamination due to deteriorating infrastructure but is a more long-term solution rather than a direct method of water treatment at the point of use. Using chlorine tablets is another valid method for disinfecting water; however, boiling is often regarded as a more universally accessible and immediate response. Both options could be used in conjunction with boiling for enhanced safety, but boiling alone stands out for its simplicity and effectiveness.