Which two sources of water in a home could be used, though not necessarily for drinking?

• A. Water heater and swimming pool (not for drinking)
• B. Water heater and faucet
• C. Rain barrel and water main
• D. City water main and water tower

Answer: (A)

The idea being tested is identifying water sources in a home that can be used for non-drinking tasks. A home’s water heater stores water that can be drawn for cleaning, laundry, dishwashing, or flushing toilets when drinking water is limited, even though that hot water isn’t suitable to drink. A swimming pool on the property is another water source that isn’t intended for drinking, but it can be used for non-potable tasks such as outdoor cleaning or irrigation after ensuring appropriate handling of chlorine and contaminants. These two sources are practical options for non-drinking use within a home environment, whereas other options either refer to potable-supply sources or to outdoor storage that isn’t as readily used for routine home tasks.