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[–] 7 points 1 year ago (2 children)

I don't know the situation in the UK but some countries have separate drains depending on if it's waste water or just a regular rain water drainage. Rain water drainages are often not treated in any way (because why, it's rainwater anyway) but waste water is processed in treatment plants.

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  • [–] 7 points 1 year ago* (1 child)

    It's not just rainwater once it's made it's way from the streets and into the gutter though.. i would hope there's some sort of treatment

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  • [–] 11 points 1 year ago

    There is not. Obviously I can't speak for every city in the world but any I'm familiar with either flow back to natural water sources, or to storm ponds to slowly evaporate/become ground water

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