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Lead poisoning causes more death, IQ loss than thought: study

medicalxpress.com

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Re: Lead poisoning causes more death, IQ loss than thought: study

#471

Post by p3rls »

ComputerGuru wrote: post #462
p3rls wrote: post #456

Earlier quoted context omitted.

To me what I hear: your pipes weren't supported and your pressure is too high if it can be described as violent. I can hear my old office's script telling me to sell you a PRV or two.

I hear what you’re saying but isn’t it a bit of six of one and half a dozen of the other? The high(er) pressure relative to what the pipes could withstand exacerbates the effects of water hammer induced by the pressure washer’s solenoid constantly slamming open and shut in the matter of milliseconds, no? Lower pressure (via a PRV or otherwise), higher-rated pipes, slowly opening and closing valves, or strategically i…

Because you are fixing symptoms (w/ another failure point) with local solutions and not the disease (high pressure, bad or unsupported pipes) and good plumbers do not do that because A) ethics B) liability

If your question is can those gas piston water hammer arrestors protect fixtures-- sure, I mean that part is just physics. Whether it's worth it before a hosecock is a completely different matter -- also as per the OP you're far more likely to break a toilet valve just from handling than from water hammer.

Re: Lead poisoning causes more death, IQ loss than thought: study

#472

Post by harry8 »

mkoubaa wrote: post #452
harry8 wrote: post #364

Earlier quoted context omitted.

False. Low IQ correlates with lack of intelligence. Average and above means nothing. --IQ skeptic

That's still a loose correlation, but I do appreciate the correction

Intelligence is both directions. It only correlates with un-intelligence. Eg the poor individual has a brain injury or does not.

Re: Lead poisoning causes more death, IQ loss than thought: study

#473

Post by kortilla »

WillPostForFood wrote: post #463
kortilla wrote: post #404

Earlier quoted context omitted.

Your cold water carries the same junk into your tea. It’s just missing the settling tank that would separate it out.

It is potentially a decade of accumulated junk in the hot water heater. If you aren't able to taste the difference, the data backs up the issue with drinking hot water. https://www.nytimes.com/2008/01/29/health/29real.html https://blogs.edf.org/health/2018/02/26/lead-hot-water-issue... https://www.denverwater.org/tap/psa-dont-drink-or-cook-with-...

Make up your mind, does it come in or go out of the hot water tank?

It can’t both accumulate and leave at the same time.

Re: Lead poisoning causes more death, IQ loss than thought: study

#474

Post by kortilla »

giantg2 wrote: post #427
kortilla wrote: post #403

Earlier quoted context omitted.

This is not taught in the US and we blend hot and cold together. Why are the lines blended at the faucet if that’s the case?

There's a lot that's not formally taught in the US. But I'm in the US and this is a thing. The blended faucets are fine. If it was set to hot or some blend with hot in it, you set it to cold and let it run for 1-3 seconds.

No, it’s blended because hot water is fine in the US. We don’t use hot water tanks that sit on rooftops and accumulate bird shit.

Re: Lead poisoning causes more death, IQ loss than thought: study

#475

Post by kortilla »

reducesuffering wrote: post #455
kortilla wrote: post #399

Earlier quoted context omitted.

The rate of obesity is low because of survivorship bias, nothing more, nothing less. For obese and/or disabled people, living in New York is an absolute nightmare if you can’t afford public transit. Despite loving the city amenities, culture, nightlife, one of my family members had to give up and leave NYC because he couldn’t afford cabs everywhere and hated showing up to events late and sweat-soaked otherwise.

> The rate of obesity is low because of survivorship bias, nothing more, nothing less You think the rate of obesity is not at all affected by the amount of walking?

You miss the point. People who want to walk and live that lifestyle live in New York. People that walking is painful for generally leave.

It’s like saying wearing bikinis on beaches seems to cause weight loss.

Re: Lead poisoning causes more death, IQ loss than thought: study

#476

Post by reducesuffering »

kortilla wrote: post #475
reducesuffering wrote: post #455

Earlier quoted context omitted.

> The rate of obesity is low because of survivorship bias, nothing more, nothing less You think the rate of obesity is not at all affected by the amount of walking?

You miss the point. People who want to walk and live that lifestyle live in New York. People that walking is painful for generally leave. It’s like saying wearing bikinis on beaches seems to cause weight loss.

It's some of the effect, but absolutely not all. You said it's pure selection bias, no more, no less... That was your point.

I'm the same person, but the last place I lived I averaged 7k steps and now I average 4k steps. That clearly affects my level of health and weight.

Re: Lead poisoning causes more death, IQ loss than thought: study

#477

Post by CarVac »

tpmx wrote: post #469
CarVac wrote: post #217

Earlier quoted context omitted.

That's not actually true though. I find SAC305 to wick into joints faster than leaded solder does, provided you have quality flux in the solder. If you get the cheapest lead-free solder you can find on Amazon it will be bad. Doubly so if you have a non-temperature-controlled soldering iron. Too cold, and it won't melt effectively. Too hot, and exposed metal will oxidize rapidly.

provided you have quality flux in the solder which you often don't need with leaded solder.

Yes, you need slightly better flux to avoid using toxic heavy metal in your hobby electronics.

Re: Lead poisoning causes more death, IQ loss than thought: study

#478

Post by WillPostForFood »

kortilla wrote: post #473
WillPostForFood wrote: post #463

Earlier quoted context omitted.

It is potentially a decade of accumulated junk in the hot water heater. If you aren't able to taste the difference, the data backs up the issue with drinking hot water. https://www.nytimes.com/2008/01/29/health/29real.html https://blogs.edf.org/health/2018/02/26/lead-hot-water-issue... https://www.denverwater.org/tap/psa-dont-drink-or-cook-with-...

Make up your mind, does it come in or go out of the hot water tank? It can’t both accumulate and leave at the same time.

False assumption it needs to accumulate and leave at the same time.

Re: Lead poisoning causes more death, IQ loss than thought: study

#479

Post by nrdvana »

CrazyPyroLinux wrote: post #432
nrdvana wrote: post #357

Earlier quoted context omitted.

I had a house where a brand new copper line corroded and started leaking 2 years from installation, and I don't mean at joints or anything, I mean the local water just ate right through the wall of the pipe. I switched to Pex and was fairly happy with it. I never did do the research to figure out what was up with the water, but similarly, when I tried inventing my own sump-pump sensor by dipping copper wire into the…

I assume the copper wire was designed as a simple resistive switch? That will cause electrolysis and corrosion. There's an improved design that involves measuring capacitance, which also uses less power. I have a commercial sump pump monitor that works this way.

Yep, but in the end I was able to switch by monitoring the voltage generated by the water on the stainless rods, using a microcontroller. Worked great for a few years until I moved out. Haven't had a sump pump since. (good riddance)
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