What is the definition of non-potable water?

Non-potable water refers to water that is not safe for human consumption due to contamination or undesirable qualities. This means it can harbor pathogens, chemicals, or other pollutants that make it unsuitable for drinking or food preparation.

The definition aligns with the understanding that non-potable water can occur naturally or as a result of human activities, impacting its quality negatively. It's essential to recognize that non-potable water must not be ingested directly, as it can pose health risks. This classification serves as a key concept in backflow prevention, as it underscores the importance of preventing the contamination of potable water supplies.

In contrast, water that is described as safe for drinking would be classified as potable, while water used in agriculture typically refers to water applied for irrigation, which depending on its treatment, may be either potable or non-potable. Water that is filtered and purified, on the other hand, is treated to remove contaminants, making it safe for consumption. Understanding these distinctions is crucial for effective water management and safety protocols in backflow prevention.