What characteristic of water is essential for safe drinking water supply?

Having no pathogens is essential for a safe drinking water supply. Pathogens are microorganisms that can cause diseases, and their presence in drinking water can lead to serious health risks for consumers. Ensuring that water is free from harmful bacteria, viruses, and parasites is crucial for public health. Testing and treatment processes are designed to remove or kill these pathogens to prevent waterborne diseases.

While being colorless and odorless are generally desirable characteristics of drinking water, the presence of either does not directly affect the safety of the water with respect to health. High mineral content can alter the taste or quality of the water but does not directly correlate with its safety as drinking water. The primary concern remains the elimination of pathogens, making this characteristic vital for safe consumption.