A river gets cleaned by the process similar to wwtp.In the middle coarse of the river it's speed is slow hence all the suspended impurities setttle at the bottom and the water that reaches the sea is clean.
Yes because it is fresh water, but if the water is not cleaned for dirt than you may be poisoned
If you mean filtered by a filtering machine, yes.
A river is cleaned up naturally by digestion.
The wonderful thing about a river is that is is always getting a fresh supply of clean water. The mess needs to be cleaned up by people, the source of the contamination needs to be stopped, and all will be well.
By not dumping rubbish in it.
Fresh water supplies can be cleaned up by the water cycle
Fresh water supplies can be cleaned up by the water cycle
it does it the water gets cleaned professionally cleaned if it is the water that we drink .
They cleaned up and gave funding to support clearing up the flooding in the Arkansas River. This was how the river was cleaned up.
How water moves through out our atmosphere and is cleaned
theEgyptians had used a wheel to gather water from the Nile when it wasn't dried up and the way on how they had cleaned up the water was that they had heated it up or boiled there water and then had cleaned it or cooled the water from time or during the night when it had gotten cold and had cooled off of the water.
the sewers take sewage and surface water runoff (from the roads etc) to a sewage treatment plant. Here it is treated and cleaned then discharged back in to a river or stream. From that river a water treatment works then abstracts (removes) water, treats it drinking water standard and it is pumped through the water pipes to your tap.