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Because "black water" means "water that we can't use", and "grey water" means "water that we can use".
The definition of grey water is that it is waste water that is safe to use (other than for drinking) without treatment. The definition of black water is that it is waste water that requires treatment before re-use. If you have water that you can use, then by definition it isn't black. If you have black water, then whatever reason that it is black is the reason that you can't use it.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agousing grey water is agood thing because it helps a plants to grow faster, and because it has a chemical that helps planst
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Why sewers are good?
They transport "grey water" (runoff, toilet, sink, washing machine, etc) to a water treatment plant to be processed, and in turn returned to the environment (usually to a river, lake, etc). If we didn't have sewers, we'd be sick. A lot. All the time.
What is the difference between tap water and grey water?
Tap water is generally potable water, able to be used for cooking and drinking (this depends on the country and area you live in). Grey water is used water ie washing water that is let down the drain, again this is dependant on the country and area you live in . Many people are using grey water for plants or in some cases purifying it again for drinking
What is a good science fair project using color blindness?
The color grey. =3 I did the same project.
Are there any concerns recycling grey water?
recycling grey water is one of the most unknown.
Is grey water grey?
Grey is the label for waste water that has been used for washing, showering, washing up etc. It is not expected to carry a heavy load of germs, yet it is unsuitable for drinking water. It can be helpful in dry climates to water plants with
What kind of water can grey whales live in?
Salt Water
If you use gell will your hair go grey?
No, using Gel will not make your hair go grey. Grey hair is caused by your genetics (family history).
What is a good sentence for the word grey?
The grey suit looks great on display.
What are the effects of gray water on plants?
The affects of grey water on a plant is that grey water will probably kill the plant or the plant Will live but it depends on the type of plant you get and the type of harsh water.
What organisms are found in a killer whales environment?
blue whales grey whales sharks
Why does your lavender look so dry now plenty of water and rain?
Lavender that has been over watered will grey and die. It needs really good drainage and not a lot of water.
Is grey hulk good?
Yes he is
