21–30 of 132 posts
I would like to see a city where pipes are guaranteed leak free, for example by making them double walled with high pressure air in the outer layer, and then seeing if disease levels in the city are lower.
I wonder how much human health is impacted by these leaky pipes. I would like to see a city where pipes are guaranteed leak free, for example by making them double walled with high pressure air in the outer layer, and then seeing if disease levels in the city are lower.
> While the park trees contained lead isotopes normally associated with air pollution, the street trees had isotopes found in lead water pipes, which were made with metal from geologically old deposits in nearby mines. I don't understand this part. We didn't use different sources of lead to make leaded gas and lead pipes, no?
For gasoline, all production had to be centralized in a few refineries. The lead would have been shipped in, and would have been largely the same quality and age, likely coming from the same mine, or geographically close mines. Plus the absolute quantity of lead added to gasoline is relatively small. In the 60 years the US used TEL, we processed about 8 million tons of lead. Averaged out, it's 133 thousand tons a year. It would only take a few mines to provide that much. Probably not more than five or ten, but I can't immediately find good data on this.
One would expect that the lead used in gasoline is pretty homogeneous across time, and that intensive lead use (as in casting into solid metal object like pipes) would use the nearest available source, and use that source for as long as possible.
I wonder how much human health is impacted by these leaky pipes. I would like to see a city where pipes are guaranteed leak free, for example by making them double walled with high pressure air in the outer layer, and then seeing if disease levels in the city are lower.
We already have this data in a way, from cities where there is no running water and people rely on bottled water for drinking and washing.
I wonder how much human health is impacted by these leaky pipes. I would like to see a city where pipes are guaranteed leak free, for example by making them double walled with high pressure air in the outer layer, and then seeing if disease levels in the city are lower.
I wonder how much human health is impacted by these leaky pipes. I would like to see a city where pipes are guaranteed leak free, for example by making them double walled with high pressure air in the outer layer, and then seeing if disease levels in the city are lower.
Those leaks are 99.9% one way.
Followed by ecosystem being collected and put back into drinking water, most of which only has pretty lightweight treatment which doesn't even involve testing for any viruses which have snuck through.
Or if you're a willow tree you make a leaky pipe.
I wonder how much human health is impacted by these leaky pipes. I would like to see a city where pipes are guaranteed leak free, for example by making them double walled with high pressure air in the outer layer, and then seeing if disease levels in the city are lower.
Or if you're a willow tree you make a leaky pipe.
Earlier quoted context omitted.
Those leaks are 99.9% one way.
That way being 'sewage leaking into the ecosystem '? Followed by ecosystem being collected and put back into drinking water, most of which only has pretty lightweight treatment which doesn't even involve testing for any viruses which have snuck through.