Non-potable: Not suitable for drinking. Compare potable.
Non-renewable resources: Natural resources that can be used up completely or else used up to such a degree that it is economically impractical to obtain any more of them; e.g., coal, crude oil, and metal ores.
Non-potable: Water that is unsafe or unpalatable to drink because it contains pollutants, contaminants, minerals, or infective agents.
non-potable (non-POE-tuh-bull). Water that may contain objectionable pollution, contamination, minerals, or infective agents and is considered unsafe and/or unpalatable for drinking.
On a global scale, non-potable water reuse is currently the dominant means of supplementing supplies for irrigation, industrial cooling, river flows and other applications (Asano, 1998). The reuse of potable waters has been an accepted global practice for centuries.
Closed-Loop Recycling: Reclaiming or reusing wastewater for non-potable purposes in an enclosed process.
Closure: The procedure a landfill operator must follow when a landfill reaches its legal capacity for solid ceasing acceptance of solid waste and placing a cap on the landfill site.
Typically black water, after neutralization, is used for non-potable uses such as flushing or irrigation.
Reclaiming or reusing wastewater for non-potable purposes in an enclosed process.
Source: Terms of the Environment
As a result, they are also vulnerable to terror threats and intentional contamination. Protecting drinking water sources and water treatment facilities is vital to preventing an incident that may cause drinking water to become non-potable.
See also: What is the meaning of Table, Waste, Water, Environment, Wastewater?