Find out how wastewater from your bathroom and kitchen is treated before it is discharged into the sea?
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The references give the major steps in treating wastewater. They contain pictures, charts, and diagrams that can not be reproduced in this forum.
waste water from bathrooms and kitchens (grey water) is usually recycled in a water treatment plant, they expose the water to a type of algae full of bacteria which eats all the bad stuff in the water, before the water is re introduced back into a reservoir or the water system.. recycled water is as good as mineral water and just as healthy to drink
Depends on where you are. Here in the US raw sewage discharge is illegal. In the cities waste goes to a treatment plant where it is treated mostly with time and chemicals, some solids are separated with the left over cake land filled or burnt, while the liquids are checked and released from pipes that go way out to sea. In our country sea side towns we have waste containing septic systems that must be above the water table and the liquid content drains threw sand/ fill to be lost while solids are decomposed to liquids over time. though all this in the end is a pretty poor idea as it is changing the ocean environment subtly (enough to make changes in the health and reproduction of fishes). For all that, other places don't even that that little bit of care and raw waste is found everywhere, as do health issues. Pilot systems have been tried and work fantastically but the money always has something better to be spent on, like paving roads that don't need it so that private construction can get all the good tax moneys in the "Good ol Boy" government system.
Normally it is treated before it is returned, but you don't have in mind the input from the aquifers.
People use synthetic fertilizers, spill cleaners and oils on the ground, etc., and that nds in the groundwater sources, which go to rivers, lakes, and drinking water sources. There is no way to intercept that harm done, so all aquifers are generally polluted. The water has to be treated *after* collected.
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