What is characterized as potable water?

Potable water is water that is safe for human consumption without the risk of health problems. It is characterized by several key factors, all of which contribute to its safety and quality.

Maintained at adequate pressure ensures that the water system can deliver water efficiently and helps prevent contamination from backflow issues. This is important for maintaining the integrity of the water supply and ensuring that it reaches the consumer safely.

Having a chlorine residual is a critical aspect of water treatment. Chlorine is commonly used as a disinfectant to kill harmful microorganisms that can cause disease. A detectable level of chlorine residual in the water indicates that the water has been treated and is less likely to have pathogens present, making it safer for consumption.

Being pathogen-free is perhaps the most critical characteristic of potable water. This means that the water has been treated and tested to ensure it does not contain harmful bacteria, viruses, or other pathogens that could pose health risks to individuals consuming the water.

Given that all these characteristics are essential for water to be deemed potable, the option stating 'All of the above' encompasses the full range of requirements for ensuring water is safe to drink. Each criterion plays a vital role in water safety, confirming that selecting all of them together accurately defines potable water.