you can pick up infections, and you may even die from water that comes from poorer countries. Also it can cause Cholera, and bad Diarrhoea to people that don't live in a poor country and they taste the bad water.
Yes, it is the opposite of the adjective "treated" (attended to). The word treated is the past tense and past participle of the verb "to treat."
Yes, it is one of the main. There is a lot of untreated sewage.
Intoxication
erosion
the dangers are probably the intense heat, blistering sun, and no water.
Some dangers are:No airno gravitytoo hottoo coldno water
Well... drowning is a danger of water sports...
Contains bacteria that will lead to illness
If the water is untreated it can contain organisms that will cause diarrhea.
You can get Giardia lamblia from drinking untreated water. Giardia is a microscopic parasite that can cause diarrheal illness known as giardiasis. It is commonly found in natural water sources such as lakes and streams contaminated with fecal matter.
erosion weathering and water
It is dangerous to drink untreated lake water.