Which of the following water types is suitable for drinking?

Potable water is water that is suitable for drinking. Potable water meets or exceeds the

Environmental Protection Agency’s (EPA) drinking water quality standards and is free of

contaminants that are harmful to human health. The other options are not suitable for drinking.

Graywater is wastewater from sinks, showers, and laundry that can be reused for non-potable

purposes such as toilet flushing and irrigation. Greenwater is rainwater that is collected and stored

for non-potable uses. Stormwater is runoff from precipitation that can carry pollutants and

sediments into waterways. Reference: LEED Green Associate Candidate Handbook, page 26; USGBC,

[Water Efficiency], page 2.