6 ms·

I’m currently in the process of getting a whole home RO system to clean all this garbage out of my water, but I can’t do anything about the water my purchased f

I’m currently in the process of getting a whole home RO system to clean all this garbage out of my water, but I can’t do anything about the water my purchased fruits and vegetables are grown in nor the water the animals raised drinking.

29athrowaway 3y ago
The contamination is already in your organism. Nonstick pans, food packaging, fish, microwave popcorn, waterproof clothes, contact lenses, and so many other products.
- joenathanone 3y ago
  Im careful when I can be, but it’s hard to always know the source of your food.
dkqmduems 3y ago
Find someone with a LCMS and have your food tested.
thfuran 3y ago
Doesn't that involve passing water through a bunch of plastic filters and then letting it sit in a big plastic holding tank?
- thsksbd 3y ago
  Sure, but it works :) (except that one company that had a low quality membrane that leached ionomers, lol). Once plastics have leached off their manufacturing chemicals they really are very benign. The membranes you mention are permeable, basically, only to water. Salt ions are pretty small - if the membrane blocks salt ions, they're going to block just about any molecule [1]. 1. for the most part. You can have a molecule that dissolves in the polymer membrane and therefore gets through. A great example is polymer self-diffusion itself (fairly slow) and very short chains of the polymer (faster). But, generally, polymers don't like to mix with anything but themselves (see Flory-Huggins and DeGennes).
- steve_adams_86 3y ago
  These plastic components are made from relatively stable polymers which don’t contain PFAS.
- onlyrealcuzzo 3y ago
  It also involves taking all the minerals out of water.
  - lost_tourist 3y ago
    sure but you can buy tablets to put them back in, drinking purely distilled water on the regular sound's really bland
    - watersb 3y ago
      > drinking purely distilled water on the regular sound's really bland Also potentially dangerous. If you drink a gallon of distilled water all at once, it could screw up electrolyte balance. Screwy potassium levels can cause heart fibrillation. I would guess that the risk of water that's coming from reverse osmosis is safe for routine use, in the context of a healthy diet.
      - djtango 3y ago
        Isn't distilled water also bad for your teeth?
        DoingIsLearning 3y ago
        Fluorinated water is a US thing. People elsewhere do fluoride varnishes with their Dentists and that is absolutely fine and sufficient.
        vel0city 3y ago
        Its not just a US thing, other places in the world have fluoride in their water. In many areas fluoride just naturally occurs in the water at levels even higher than what managed services target. But other countries, such as Hong Kong, parts of Malaysia, Singapore, Ireland, parts of Spain, parts of the UK, parts of Canada, Mexico fluoridates table salt, most of Austrailia, Fiji is rolling out a program, half of New Zealand, about half of Brazil, and most of Chile all have some water fluoridation programs. Many other countries did at some other point in time but stopped doing it.
alliao 3y ago
check containers too.. but good idea regardless as it's bioaccumulative so less exposure is better
Foreignborn 3y ago
For anyone wondering if this works, the EPA seems to think it does: >>> High-pressure membranes, such as nanofiltration or reverse osmosis, have been extremely effective at removing PFAS. Reverse osmosis membranes are tighter than nanofiltration membranes. This technology depends on membrane permeability. A standard difference between the two is that a nanofiltration membrane will reject hardness to a high degree, but pass sodium chloride; whereas reverse osmosis membrane will reject all salts to a high degree. This also allows nanofiltration to remove particles while retaining minerals that reverse osmosis would likely remove. >>> Research shows that these types of membranes are typically more than 90 percent effective at removing a wide range of PFAS, including shorter chain PFAS. https://www.epa.gov/sciencematters/reducing-pfas-drinking-water-treatment-technologies https://www.epa.gov/sciencematters/reducing-pfas-drinking-wa...
- axus 3y ago
  Was curious, where does all the stuff that's filtered out go? And then industry sites like https://americanhomewater.com/the-truth-about-reverse-osmosis-waste-water/ https://americanhomewater.com/the-truth-about-reverse-osmosi... raise more questions which probably have better answers.
  - yojo 3y ago
    RO systems use a lot of waste water. So the contaminants get concentrated into that and go out the sewer. I’ve got one set up for my drinking water and it’s 1:1, so a gallon of waste water for every useful gallon. Others use even more.
    - joenathanone 3y ago
      You can dramatically increase efficiency by adding a permeate pump, search Amazon, they can be had very cheaply, they recycle the concentrate, increasing recovery and filter effectiveness.
    - permo-w 3y ago
      so you go through all the effort of removing them, then release them straight back into the water supply?
SteveNuts 3y ago
Which one did you go with
- joenathanone 3y ago
  In the process of getting one of these units https://hanspremiumwater.com/reverse-osmosis/ https://hanspremiumwater.com/reverse-osmosis/ Key features High efficiency No need for water storage tank, but optional pressurized tank available Real-time TDS monitoring via screen on RO unit and free Android/iOS apps.
  - RetpolineDrama 3y ago
    Super frustrating company, just show me the dang price don't link me to a "distributor".
    - joenathanone 3y ago
      I was quoted around 22k, which is on the high side, you can get whole home ro units starting around $2-3k mark, but storage tank + install puts you around 5k minimum, some higher efficiency units can’t also be had for around $10k. I am willing to spend so much because of the high efficiency, live TDS monitoring and the $20 per month full maintenance plan. Some of the higher end systems require a lot of fiddling and knowledge to run properly, and most plumbers where I live know next to nothing about whole home RO, so having the maintenance plan which covers, parts, labor and replacement filters is priceless in my book.
- harrydehal 3y ago
  You can search the NSF.org certifications here, specifically NSF/ANSI 53 and NSF/ANSI 58: https://info.nsf.org/Certified/DWTU/Listings.asp?ProductFunction=053%7CPFOA+Reduction&ProductFunction=053%7CPFOS+Reduction&ProductFunction=P473%7CPFOA+Reduction&ProductFunction=P473%7CPFOS+Reduction&ProductType=&submit2=Search https://info.nsf.org/Certified/DWTU/Listings.asp?ProductFunc... https://www.nsf.org/news/pfoa-pfos-reduction-claims-requirements-added-to-nsf-standards https://www.nsf.org/news/pfoa-pfos-reduction-claims-requirem... P.S. Note the "facility" where these products are manufactured are also listed. One might also want to note that [replacement] filters may also have different country origins.

29athrowaway 3y ago

The contamination is already in your organism. Nonstick pans, food packaging, fish, microwave popcorn, waterproof clothes, contact lenses, and so many other products.

joenathanone 3y ago
Im careful when I can be, but it’s hard to always know the source of your food.

dkqmduems 3y ago

Find someone with a LCMS and have your food tested.

thfuran 3y ago

Doesn't that involve passing water through a bunch of plastic filters and then letting it sit in a big plastic holding tank?

thsksbd 3y ago
Sure, but it works :) (except that one company that had a low quality membrane that leached ionomers, lol). Once plastics have leached off their manufacturing chemicals they really are very benign. The membranes you mention are permeable, basically, only to water. Salt ions are pretty small - if the membrane blocks salt ions, they're going to block just about any molecule [1]. 1. for the most part. You can have a molecule that dissolves in the polymer membrane and therefore gets through. A great example is polymer self-diffusion itself (fairly slow) and very short chains of the polymer (faster). But, generally, polymers don't like to mix with anything but themselves (see Flory-Huggins and DeGennes).
steve_adams_86 3y ago
These plastic components are made from relatively stable polymers which don’t contain PFAS.
onlyrealcuzzo 3y ago
It also involves taking all the minerals out of water.
- lost_tourist 3y ago
  sure but you can buy tablets to put them back in, drinking purely distilled water on the regular sound's really bland
  - watersb 3y ago
    > drinking purely distilled water on the regular sound's really bland Also potentially dangerous. If you drink a gallon of distilled water all at once, it could screw up electrolyte balance. Screwy potassium levels can cause heart fibrillation. I would guess that the risk of water that's coming from reverse osmosis is safe for routine use, in the context of a healthy diet.
    - djtango 3y ago
      Isn't distilled water also bad for your teeth?
      - DoingIsLearning 3y ago
        Fluorinated water is a US thing. People elsewhere do fluoride varnishes with their Dentists and that is absolutely fine and sufficient.
        vel0city 3y ago
        Its not just a US thing, other places in the world have fluoride in their water. In many areas fluoride just naturally occurs in the water at levels even higher than what managed services target. But other countries, such as Hong Kong, parts of Malaysia, Singapore, Ireland, parts of Spain, parts of the UK, parts of Canada, Mexico fluoridates table salt, most of Austrailia, Fiji is rolling out a program, half of New Zealand, about half of Brazil, and most of Chile all have some water fluoridation programs. Many other countries did at some other point in time but stopped doing it.

alliao 3y ago

check containers too.. but good idea regardless as it's bioaccumulative so less exposure is better

Foreignborn 3y ago

For anyone wondering if this works, the EPA seems to think it does: >>> High-pressure membranes, such as nanofiltration or reverse osmosis, have been extremely effective at removing PFAS. Reverse osmosis membranes are tighter than nanofiltration membranes. This technology depends on membrane permeability. A standard difference between the two is that a nanofiltration membrane will reject hardness to a high degree, but pass sodium chloride; whereas reverse osmosis membrane will reject all salts to a high degree. This also allows nanofiltration to remove particles while retaining minerals that reverse osmosis would likely remove. >>> Research shows that these types of membranes are typically more than 90 percent effective at removing a wide range of PFAS, including shorter chain PFAS. https://www.epa.gov/sciencematters/reducing-pfas-drinking-water-treatment-technologies https://www.epa.gov/sciencematters/reducing-pfas-drinking-wa...

axus 3y ago
Was curious, where does all the stuff that's filtered out go? And then industry sites like https://americanhomewater.com/the-truth-about-reverse-osmosis-waste-water/ https://americanhomewater.com/the-truth-about-reverse-osmosi... raise more questions which probably have better answers.
- yojo 3y ago
  RO systems use a lot of waste water. So the contaminants get concentrated into that and go out the sewer. I’ve got one set up for my drinking water and it’s 1:1, so a gallon of waste water for every useful gallon. Others use even more.
  - joenathanone 3y ago
    You can dramatically increase efficiency by adding a permeate pump, search Amazon, they can be had very cheaply, they recycle the concentrate, increasing recovery and filter effectiveness.
  - permo-w 3y ago
    so you go through all the effort of removing them, then release them straight back into the water supply?

SteveNuts 3y ago

Which one did you go with

joenathanone 3y ago
In the process of getting one of these units https://hanspremiumwater.com/reverse-osmosis/ https://hanspremiumwater.com/reverse-osmosis/ Key features High efficiency No need for water storage tank, but optional pressurized tank available Real-time TDS monitoring via screen on RO unit and free Android/iOS apps.
- RetpolineDrama 3y ago
  Super frustrating company, just show me the dang price don't link me to a "distributor".
  - joenathanone 3y ago
    I was quoted around 22k, which is on the high side, you can get whole home ro units starting around $2-3k mark, but storage tank + install puts you around 5k minimum, some higher efficiency units can’t also be had for around $10k. I am willing to spend so much because of the high efficiency, live TDS monitoring and the $20 per month full maintenance plan. Some of the higher end systems require a lot of fiddling and knowledge to run properly, and most plumbers where I live know next to nothing about whole home RO, so having the maintenance plan which covers, parts, labor and replacement filters is priceless in my book.
harrydehal 3y ago
You can search the NSF.org certifications here, specifically NSF/ANSI 53 and NSF/ANSI 58: https://info.nsf.org/Certified/DWTU/Listings.asp?ProductFunction=053%7CPFOA+Reduction&ProductFunction=053%7CPFOS+Reduction&ProductFunction=P473%7CPFOA+Reduction&ProductFunction=P473%7CPFOS+Reduction&ProductType=&submit2=Search https://info.nsf.org/Certified/DWTU/Listings.asp?ProductFunc... https://www.nsf.org/news/pfoa-pfos-reduction-claims-requirements-added-to-nsf-standards https://www.nsf.org/news/pfoa-pfos-reduction-claims-requirem... P.S. Note the "facility" where these products are manufactured are also listed. One might also want to note that [replacement] filters may also have different country origins.