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News and Current Events > Lead and other substances in Drinking Water

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message 1: by Robert (new)

Robert Zwilling | 2193 comments It's not only the water that gets tested.

They only found the elevated levels because they took it upon themselves to check the water at those schools. Every water tap needs to be tested everywhere.

Science protocol says if there is no sign of it then it is okay to say it isn't happening. This logic was established to stop people from presenting outrageous theories about things. 100 years ago you knew outdoor streams in the woods away from people were safe to drink. Now you should figure, without testing that it is never okay to assume it is safe to drink.

If there is no sign of a test for contaminants, there is no contamination. A supposition built on absolutely nothing but the trust that whoever is responsible for the water has tested it and knows that it is safe to use. Until every tap is tested we are not going to know how safe the water is. Even the bottled water turns up contaminated, so far by plastic but there is no way of knowing where the water comes from and the source can no longer be assumed to be clean unless it is tested. The amount of pollution in the world is increasing not decreasing.

They are not going to test the children for lead. No matter if it is coming from somewhere, that is someone else's job like so many other things. If you don't know you can't care.

message 2: by Clare (new)

Clare O'Beara | 6633 comments Mod
How's about strontium?

Mussels add to their shells each year and the new growth contains some of the particles present in the water. Freshwater mussels in Penn State contain new strontium layers, in one particular river.

message 3: by Robert (new)

Robert Zwilling | 2193 comments What comes around, goes around...
Everything we dig up gets thrown away eventually and ends up back in the natural world where it is recycled back into use. Before we arrived everything was recycled by nature to the advantage of those who could use it by making it easier to get to. Now the stuff for reuse is contaminated by all sorts of weird substances, the same way the recycled materials sent to China was contaminated by garbage and forced the Chinese to quit processing those materials because it was no longer profitable.

message 4: by Clare (last edited Jun 22, 2021 02:27AM) (new)

Clare O'Beara | 6633 comments Mod
As we were saying back in 2018, what goes around comes around. Lead. In petrol. That source may be blocked, but the earlier output of lead has not gone away, it seems.

"The researchers took eighteen samples of airborne particles at street level in Marylebone in the summer of 2018, and 20 samples on a 24-meter-high rooftop at Imperial's South Kensington campus between 2014 and 2018.

By comparing with historical data the isotopic composition of air particles in London, they found that lead sources have remained unchanged over the past decade. They also found that the isotope composition of the air particles was similar to the signature of soils and road dust, leading them to suggest that resuspension of lead-containing dust, perhaps with wind and vehicle movement, is now an important source of lead."

More information: Eléonore Resongles el al., "Strong evidence for the continued contribution of lead deposited during the 20th century to the atmospheric environment in London of today," PNAS (2021).
Journal information: Proceedings of the National Academy of Sciences
Provided by Imperial College London

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