Bottled water has 'up to 100 times' more bits of plastic than previously feared
theregister.com
theregister.com
Try Evian versus the waters sold by Coca-Cola (that are tap-water equivalent) and you can really feel it.
Most people don't change their minds based on new information (dialectic). You have to appeal to their emotions (rhetoric). This is something Aristotle observed 2500 years ago. It's crucial to understand if you want to understand how people make decisions and how you might be able to change their minds about something.
... I say, doing the exact opposite. It's a difficult habit to break.
Not only did the customers like the waters, many of them claimed that one was much better than another, expressed a preference, and justified the preference with comments along the lines of "I can really taste the difference in this one, it's more XXX". There was even one customer who refused to believe Penn and Teller when they revealed that all of the bottles contained NYC tap water, and insisted that the waters were different from each other. A true testament to how the mind can fool itself.
The episode in question used to be available on YouTube, but now appears to be paywalled by Paramount+ unfortunately.
A little-known controversy about NYC tap water is whether or not it is considered Kosher, due to containing live copepods.
Some Jews still insist on filtering their tap water at home, for this reason.
Taste can differ from building to building, city to city, container to container.
Maybe what they actually don't care for is some slight aftertaste from the cleaning products used on the glass?
Also, your nose plays a rather big role in your sense of taste. Using a small mouthed bottle that doesn't tend to waft towards the nose as you drink will have an effect.
And if we can agree that different water can taste different, why couldn't some bottled water taste different than non-bottled water?
https://stonepierpress.org/goodfoodnews/bottled-water-or-tap....
If I were faced with the sludge coming out of the pipe in some places, I’d stock up on Brita pitchers. Here, I never go out of my way to filter it.
I still filter the drinking water, but my tap quality is fantastic.
(That said, it's never bothered me to drink tap water wherever I go, and acclimate quickly. I think the bottled water trend is insane.)
There almost certainly is a taste difference. The mineral content is likely different, and the plastic from the bottle can have an influence, too.
I can definitely taste a difference between our (Pur-filtered) tap water and the cheap bottled water we get.
When I was a kid, I wouldn't drink Aquafina (or Dasani) because they tasted plasticky. I attributed it to them using the same plastic for Cola bottles, without the overpowering flavors to mask subtle tastes from the plastic. I'm not as picky now, but my taste buds have gotten less sensitive and it's also possible they fixed the issue.
Plastics used in water bottles are not water soluable.
Is there ANY hard evidence of harm to human health from ingesting minute quantities plastic dust vs any other kinds of dust?
Most plastics are chemically and biologically inert. That is why they don't break down in nature.
Where is the evidence that they react in the body to cause harm?
A water bottle is not your vinyl shower curtain. It is made of PET or maybe PE. Neither are biologically active.
Polyamide ( nylon ) in water filters is non toxic. You could probably eat a teaspoon of fine nylon powder a day suspended in water for years with no health effects because it would just pass through the body without reacting, mainly excreted with feces. Your intestines are not going to absorb insoluble plastics into your blood. The quantities found in water bottles are far, far, less than a teaspoon.
Is there any study that purports to find a significant quantity of polyamide or PET or PE in blood???
It really seems there is a media generated mass hysteria around safe plastics. Not all plastics are the same. Plastics used for food or drink application are typically PROVEN safe from decades of study. What are we all worried about then?
For example there was a time when publicity recommending cigarettes to pregnant women was a thing.
I still quite a fan of this even when I drink water from plastic bottles when I am on the road.
Cost wise I found it evens out per bottle when compared to buy cheap bottled water from e.g. Aldi. However, it is not necessary to carry water bottles anymore which already is quite an improvement and well worth the money.
> the most commonly detected plastic was polyamide, a material commonly used in water filtration systems and "the most popular membrane material used in reverse osmosis
Hot water and an acidic beverage running through plastic every morning. Doesn’t seem good.
Look at James Hoffman on Youtube he demonstrates "the right way" to do it.
It seems once the water is boiling inside it’s vigorous enough to kick particles out with the steam. (And it’s hard to refill without occasionally spilling on the cord which ultimately killed mine)
I ensure my little boy uses only metal water bottles.
Aluminium bottles are always coated with plastic in the factory, which flakes off and usually isn't really better than plastic-bottle-plastic, sometimes even worse (containing PTFE, BPA, ...). As soon as the coating is gone, aluminium will dissolve in the water, and aluminium salts are known to be "not good", in addition to the influence on taste. Same for copper, in addition to the hassle to keep copper clean. Steel bottles are better because proper kitchen-quality stainless steel (the one with Molybdenum in it, in addition to Chromium and Nickel) doesn't leech out into common drinks (including salty hot broth, which would stain CrNi steel) and doesn't need inner coating.
Given that almost all metal bottles are coated aluminum, the vast majority of "metal water bottle only" parents are doing more harm than good IMO.
For storage, use glass bottles. The material of the seal is usually not a problem if there is no contact to the liquid and the seal doesn't crumble. When reusing bottles, make sure to only use fresh or at least good-looking caps. And sterilize things properly (taking into account what the seal is suitable for), because mold and bacteria are far more harmful than common metal or plastic contamination.
Also, corks promote microbiological contamination of various kinds, leading to e.g. the common failings in wine (there is actually a multitude of "cork" faults, not just one): https://en.wikipedia.org/wiki/Wine_fault
I'd prefer any metal or plastic to cork actually. Just because it is "natural" or "traditional" doesn't make it any good.
First of all, at least where I live, tap water has chlorine. Which seems to carry some risks (see, e.g. https://pubmed.ncbi.nlm.nih.gov/12594192/).
Secondly, my building has copper and PVC pipes, which are also suspected of having some adverse health effects.
Thirdly, where I live, sometimes (about once per month) tap water comes out brown. Authorities typically say that it's fine to drink, and I suppose they analyze it and it conforms to some official standard, but I'm not going to drink or give anyone brown water. And that also makes me think that maybe the days it doesn't look brown to me, it might be also somewhat brown, just maybe not brown enough for me to notice.
Maybe I'm wrong and plastic from bottles is much worse than these things, but I don't think you should be so amazed that people can prefer bottled water. At the end of the day, it's a matter of picking your poison... with incomplete information.
If some of the contamination is "pre bottling" then the issue may be way more pervasive than just bottled water.
i wonder if it is more of an issue for large-scale filteration or even for the ones used at homes. anyways, for our generation and the next microplastics are here to stay (just check the search results here https://hn.algolia.com/?q=microplastics)
> "That was incorrect," Yan said.
> Ironically enough, the most commonly detected plastic was polyamide, a material commonly used in water filtration systems and "the most popular membrane material used in reverse osmosis … a common water purification method shared by all three brands [of water tested]," the team wrote in the paper.
Too different from the title. And the other comments seem to have been written without reading the text.
Can I ask, why do you choose to use plastic rather than ceramic/carbon filter?
They claim its because it's not thorough enough and too expensive. But you can make up whatever reason you want to avoid standardized third party testing.
Is this inevitable with a polyamide membrane RO system or is this wear and tear with insuficient maintenance/ part replacement?
It sounds like it doesn't matter:
"Ironically enough, the most commonly detected plastic was polyamide, a material commonly used in water filtration systems and "the most popular membrane material used in reverse osmosis … a common water purification method shared by all three brands [of water tested]," the team wrote in the paper."
> Virtually all metal cans used for food and beverage products are lined on the inside with a coating that uses BPA as a starting material.
Here still lead pipes are being discovered in old building, which has proven to lead to significant issues in Brain development of children.
Also often other residue is found of farming & medicine and other things seeping into the ground water.
So sadly finding clean & good water is not easy, bottled or tap.
> Ironically enough, the most commonly detected plastic was polyamide, a material commonly used in water filtration systems and "the most popular membrane material used in reverse osmosis … a common water purification method shared by all three brands [of water tested]," the team wrote in the paper.
while it seems trivial in amount, the bottled water is ironically cheaper than many developing countries (unless you go for large 20L bottles that you need to exchange for filled ones).
The Mississippi is also the open sewer of the Midwest.
And our sewer and water board is incompetent and corrupt ( I love public infra. This one sucks )
As a result. I don’t drink that water directly and filter it.
I think that will be more and more common. At least in the US.
Shouldn't be a problem. Might I interest you in some new water?
If you look at the list, even Brita doesn't claim that their pitcher filter the really nasty stuff. At most they "help to reduce". It looks like they are really designed only to remove the chlorine taste.
Their "Faucet Mount Filters" looks a bit more effective.
The S&WB almost needs it's own discussion thread. Not sure your average American HN reader can even comprehend the level of incompetence we have to deal with from that group.
Karl Marx showed us 150 years ago that a government under capitalism is a capitalist government.
However there a number of people who panic! And the panicky people have loud voices. They treat everything like DDT or asbestos. That's not to say that caution is not warranted. It is, but take it easy, the frogs aren't turning gay and people are living longer, so long as they don't get hooked on addictive drugs, including tobacco, alcohol, MJ, amphetamines, etc.
Okay, are you saying we shouldn’t care whatsoever if we ingest PLASTIC (!!!) because beer and McDonalds exist? People shouldn’t care?
I don’t drink, I don’t eat fast food. I don’t “drive dangerously” and I sure as hell am going to do everything in my power to make sure I am not eating or drinking plastic. Same goes for my wife and kids.
The reply just simply acknowledged all the things of concern, including fast food, driving patterns, and general risk overall. It's OK to be concerned about plastic, even if there are likewise additional concern areas in life.
I don't live next to a rocky mountain spring.
the only solution is to purchase a large steel tanker truck and drive it to the mountains and fill it up with hopefully enough pure water to use for the year.
RO water will have about 25 ppm TDS. Distilled brings that down to about 10 ppm. Bottled water is generally around 400 - 600 ppm TDS.
You're right in the fact that RO water has _more_ taste than distilled water, but it pales in comparison to the mineral content / taste in bottled water.
Also, I shouldn't have used the word "all", so substitute that with "almost all"
There are RO systems which have a final stage to add minerals back into the water, but I don't know how well they actually work.
> the most commonly detected plastic was polyamide, a material commonly used in water filtration systems and "the most popular membrane material used in reverse osmosis
This poster's cost drop on the $2/5Gal made me go down the cost analysis train on my own system.
I setup my own robust RO system at home and filter my own water. It uses a 20gal tank so the output is very high when demanded (slow regen, lots of storage). We use about 1400gal of drinking water from this system a year between 5 people and 3 pets (I filter their water too), filter media needs replacing every year. (1400/5)*2 = $560/yr cost if purchased water from "Whole Foods" which I don't have access to. I also use the water in the winter for humidifier units, so that probably boosts my usage a lot.
Filter replacement costs are ~$80 per year plus the RO membrane every 5yrs (80/5) 80+16 = $96 per year on media... let's just call it $100 to add margin for o-rings replacement or other tooling or random things.
560 - 100 = $460 savings over "Whole Foods"!! Neat! Not counting the convenience costs too.
Original investment for the system: $580.
Break-even in a bit over 1 year doesn't seem bad. Its been 4 years since I started doing this, so it seems like I am well ahead already.
Input water cost is minimal, I pump ground water so there's no cost other than electricity. There are other costs to my water treatment system that I won't include in the "drinking water" category since that's whole home. I also treat for iron/arsenic, which was a 1.8k filter and costs ~$80 in reagents per year.
I like your evaluation here, not criticizing it. But I'm curious about adding the costs for time/material/travel to your costs.
For me, I'm not going to run a RO system because I can beat the cost against Whole Foods. I'm doing it because I believe in the RO system (even though the article casts a bit of a knock against the plastic membrane, which is unfortunate).
Sourcing the filters is extremely easy, I order them in sets of two complete sets every other year, since the cost for order two is slightly less.. then I can order them on some on-sale price instead on on-demand.
labor is extremely minimal. I have to replace filters only once per year and it takes about a half hour of time.
Labor saved over transporting water from off-site is not in the same ballpark.
I was inspired to do this because I tested our well water for arsenic and wasn't happy with the results. It was 30ppb, and it's now 2.5bbp from the tap (after the iron filter, but before the RO filter)
I had gotten the RO system in hopes that's all I needed, but after testing the water out of the RO system for arsenic, I was still unhappy with the results. ~15ppb... so likley un-oxinidated arsenic. Adding an iron filter to oxidize the water and remove both iron and arsenic did the trick.
Before I installed new filters, I started sourcing my water from grocery stores by buying 1gal jugs and it was more than tedious. I had new children in the house and I was wanting to avoid having them drink water that may be high in arsenic. With storage, travel, lugging large quantities of water around the store, and having to manage the milk jugs they came in was way more work than I wanted to do every week. It would have been easier if I had access to 5gal jugs, but still more work than the system is now. I had bought 5-10 1/gals each trip.
The store also uses an RO system, treating and filtering municipal water from tap on-demand. They don't truck the water in or store it. The regeneration, even with their large system is slow, so filling up 5-10gal jugs took a long time and there was sometimes a line. I did not like doing it. I would guess the time I would save not changing filters once per year would be eaten up by 1 or 2 trips to the store.
Pre-filled jugs were available at higher quantities for 3-5x the price.