Respuesta :
Answer: 3
Explanation:
Greywater can be defined as any domestic wastewater produced, excluding sewage
The graywater is household wastewater except for the wastewater from toilets.
Define greywater?
The greywater is a wastewater from the households and offices that doesn't have fecal contamination.
This water is not suitable for drinking, but it is also not in a very bad state, so it is used for the toilet flushing, laundry washing, for irrigation.
Thus, graywater is household wastewter except for the wastewater from toilets.
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