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Thank you for your consideration.
The mindset of 'my little bit of waste (=effluent/pollution) can't hurt' led in the past to;
https://en.wikipedia.org/wiki/Cuyahoga_RiverOut here in sunny Ruislip, the local river, the mighty Pinn,
such a torrent that HS2 cannot be tunnelled underneath it,
suffers from the urban fringe effect, typically lazy builders/plumbers piping in waste from handbasins & washing machines, (in extensions/futilty rooms), into the stormwater rather than the foulwater/sewage drain system.Currently thanks to water sampling organised by Thames21, we are gradually tracking down such sources of effluent, but broadly, per unit length of the Pinn we are one caddis fly nymph,
https://en.wikipedia.org/wiki/Caddisfly#Underwater_architects
down, from 5 to 4. Yeah, so what, one insect larvae 'missing'?
But, this indicates that the main river of a London Borough has (possibly) 20% of its biomass missing. So this goes all the way up through the pyramidal foodchain to less fish, to eventually, we don't have resident kingfishers along this stretch of the Pinn.Road drains just for storm water please.
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mespilus
Fair enough.
I'm conscious about stuff like my motorbike fluids (which go to the dump) but for paint resedue and the small amount of paster waste water I've produced I've never thought about it.
From now on I guess I'll keep it to go along with my oil etc.