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For those new to this website:
Tamara Rubin is a multiple-federal-award-winning independent advocate for childhood Lead-poisoning prevention and consumer goods safety, and a documentary filmmaker. She is also a mother of Lead-poisoned children (two of her sons were acutely Lead-poisoned in 2005). Since 2009, Tamara has been using XRF technology (a scientific method used by the U.S. Consumer Product Safety Commission) to test consumer goods for toxicants (specifically heavy metals — including Lead, Cadmium, Mercury, Antimony, and Arsenic). All test results reported on this website are science-based, accurate, and replicable. Items are tested multiple times to confirm the test results for each component tested. Tamara’s work was featured in Consumer Reports Magazine in February of 2023 (March 2023 print edition).
Originally Published: July 31, 2020
Updated: March 24, 2023 — Friday
Leaded Sealing Dots
This is what a Leaded sealing dot looks like (on the bottom of a stainless steel water bottle):
Continue reading below the image.
The image below is what these Leaded sealing dots look like on stainless steel water bottles when covered with the factory paint or another coating — note the tell-tale shape/ size/ iconic appearance of this Leaded center sealing “dot,” even when the Lead is completely covered over by a coating.
Continue reading below the image.
Some of the brands of insulated stainless steel bottles and insulated stainless steel cups (and other products) that we have tested and found to have Leaded sealing dots:
- Pura Kiki insulated stainless steel bottles for children (sold through possibly as late as 2019). This company has said they removed the Lead from their sealing dots, but I have not yet found their products — as available to purchase on Amazon — to be consistently Lead-free. My concern is that even if they have removed the Lead at some point (likely possible c. 2018, if their corporate statements are true), they did not issue a recall on their existing products so some older inventory is still likely available for purchase online and in brick-and-mortar stores. We are filing a CPSC recall for these products in August of 2023.
- Contigo insulated stainless steel water bottles may have a Leaded sealing dot (has a bottom cap design, in which the cap covers the sealing dot, similar to the Pura Kiki construction). There is no issue with bottles with the “bottom cap” design unless the bottom cap falls off with normal use (this is the problem with the Pura Kiki bottles, as reported to me by my readers). If the bottom cap does come off, that’s a good sign it’s time to replace your water bottle!
- Takeya insulated stainless steel water bottles all still have Leaded sealing dots in my experience.
- Corkcicle insulated stainless steel water bottles (all have Leaded sealing dots in my experience — even though this brand specifically is advertised as “Lead-free!”).
- Pre-2018 Hydroflask stainless steel water bottles. (Their new water bottles and other new insulated stainless steel products from this brand have consistently tested Lead-free.)
- Thermoflask stainless steel water bottles I have tested have all had Leaded sealing dots (knockoff of Hydroflask).
- Paulie Jar: Read more about that here.
- Iron Flask: I do not yet have an article up about this product but shared about it on Instagram.
- Zak Cups: I do not yet have an article up about this product but will be filing a CPSC violation notice in August 2023 and will link that here once filed.
- Crocodile Creek: Details at this link. If these are not recalled in August 2023 we will be filing a recall notice.
- Cupkin: This product was recalled. Details are at the link here.
- Stanley: Details following the link here.
- Green Sprouts insulated baby bottles: This product was recalled. Details here.
- Bindle Bottle: This product was recalled subsequent to our findings. Details here.
Amazon links to the products above are provided (their brand names are highlighted in blue), so you can see them “out in the wild” — not because I recommend buying each of these products! The only product brand I recommend for insulated stainless steel water bottles is new, genuine Hydroflask products, as I have confirmed their new products (current/ modern available inventory — in stores and online) are consistently Lead-free. Hydroflask is a good company — a company that immediately and proactively responded to my initial findings of Lead in the sealing dots of their older water bottles and took care of the problem (years ago — back in 2013-2015, as soon as I informed them of my findings).
Amazon links to these products are affiliate links. If you purchase something after clicking on one of our links, Lead Safe Mama, LLC may receive a percentage of what you spend at no extra cost to you.
Is this a problem?
Why is this a problem?
My main concern is that children (and some adults) may interact with the dimple on the bottom of these bottles — whether out of curiosity or as a “fidget.” If the sealing dots are fully exposed to bare Lead (as with the example in the main picture for this article), that means the owner/user is touching bare Lead.
Is there any risk that the water inside the bottle can be contaminated by Lead?
The short answer to that question is “No.” This is a serious but localized/ exterior potential touching hazard; with any of these bottles, the water or other liquid inside the bottles is NOT exposed to the Lead sealing dot on the outside of the bottle, and thus the contents of the bottle are not Lead-contaminated. For the bottles that have a painted coating (or sticker or other seal covering the Lead dot), I have noticed that those seals consistently come off in most brands so a hazard may not be present at the time of purchase but can become an issue later with normal use and wear of the bottle (as intended). If you have one of the above-mentioned brands and the bottom cap (or other seal) covering the Leaded sealing dot has come off, please cease using the cup and either return the product (asking for a refund) or destroy the product.
As always, please let me know if you have any questions. I will do my best to answer them personally as soon as I have a moment, but that may take a while given the significant increase in readership here on LeadSafeMama.com. Thank you for reading and sharing our articles.
Tamara Rubin
Owner — Lead Safe Mama, LLC
LeadSafeMama
So these insulated bottles would be safe to use provided that you dont touch the sealing disk? Is this lead button on the inner layer or outer or both? And do you know if Manna uses these lead disks?
Any thoughts or info on yeti?
Hi Tamara, thank you so much for sharing all this extremely valuable information!… Have your ever tested Thermos or Camelback water bottles for children? Thank you!
The plastic bottles are generally lead-free, but some of the thermos brand bottles appear to have a leaded sealing dot (or partially leaded sealing dot) under the bottom cap. https://tamararubin.com/2017/03/camelpink/
Here’s the video that shows all the ways to search the blog: https://tamararubin.com/2020/12/how-to-use-the-lead-safe-mama-website-video/
Tamara
Happy Holiday Tamara
Thank you for LL the research that you do❣ You’re a GDsend
I wanted to know are there any stainless steel water bottles for adults that have a drinking spout, besides the ‘Wide Mouth’ type?
Love & Light,
Kathie
How about Corkcicle hybrid canteen bottle which is made with glass and stainless stain bottom? Thanks
I would like to suggest that Klein Kanteen Has no dot. At least the ones I have.
I am beside myself. What is the point in them using lead!?!? I just don’t understand why it’s even a thing. Someone, please explain.
So, I bought two hydroflasks and a Takeya from some “Joe” selling them on marketplace. He had a plethora of them. They all have that intention on the bottom. Does that mean they all have lead? Ugh, I hate this world.
its cheap
What about Ecovessel’s Boulder and Frost Bottles?
Hello and thank you for your work! I see that you have found (new) Hydroflask bottles to be lead free. I just bought a new insulated Hydroflask bottle (the 12 oz wide mouth bottle, specifically made for kids) and it has what looks like a sealing dot?! There is a removable silicone bumper on the bottom, and underneath is a small depression that looks very much like your example photos. Is it possible this is still lead free? Thank you!
They use lead free materials to make their sealing dots. They are the only brand that I am aware of that is doing this.
I called Hydro Flask…three times until I could get someone to answer my question. They said their “Temp Shield” sealing process does not use lead but still has a sealing dot on the bottom. (I hope this is true)
HydroFlask is the only brand that I know that has consistently tested Lead-free in recent years.
Hi Tamara, thank you again for your excellent work! I just wanted to add that I recently reached out to an Australian company, Montii Co., and they said this about their insulated products (water bottles and food jars): “in order to pass LFGB certification all of our products have to be 100% lead free, including the hidden bits (not just the bits that come in to contact with food / drink).”
Interesting!
Thank you for your work! We have some Otterbox stainless steel tumblers, but the outside is coated various solid colors. Is there a concern of lead with those, please?
Have you tested Reduce Everday insulated water cups? I would be curious to know. I don’t see the dot on the bottom, but I’m just not sure! Is this only a problem in insulated water bottles? Or would it also apply to a plain stainless steel cup?
I have 2 ThermoFlask bobbles that I bought at Costco. I have used one more than the other. I noticed that there are a few dots inside the bottle in the bottom (inside the bottle) that looks like it has rust spots. I only use the bottle for water. I am afraid to continue drinking water from it. What should I do? I thought of returning them to Costco. Please reply to my email.
Oooooooo noooooo! We were just gifted thermo flasks. The bottom looks to be powder coated like the bottle. Is there still a risk if it appears powder coated? Wasn’t sure if this would be considered painted how you said that would wear off, but this powder coating looks okay (except one looks like they fixed a bad spot, ugh). Very interesting. Going to see I can share pics.
Hi! Do you have a clue about the Thermos kids cups?
Hi! Thank you so much for this information and your dedication to informing the general public. I’m new to all of this (as of today!). I have several contigo bottles and a s’well one. Seems like contigo is okay to use but I’m wondering about s’well. Have you ever tested their products? I’m overwhelmed with finding nontoxic materials for my baby and the rest of us. Between the dangers of plastics and heavy metals, the options are minimal.
Hi Joy, have you tried doing a search on Damaris website? She posted a link in one of the comments above on how to do it. You just go to the search button on top of her website and type in a word that you are interested in searching info for. I did not find anything for “s’well”.
I totally agree with you. I have a two year old and just found out that all the bottles he’s been drinking out of for the last year and a quarter contain lead. Tamra also has a very helpful Facebook group that you can search posts for information as well.
Good luck!
Paula
Sorry Tamara’s website.
Hi Tamara have you tested the new Stanley Quencher Mugs? My daughter dropped hers and the bottom dot is falling off. Could it have lead underneath? Thank you
Hi,
Have you tested the Avex stainless steel Auto-Seal water bottles? They were bought out by Coleman and are no longer Branded as Avex, so even if the old Avex bottles are safe, I’m also curious if the Coleman bottles are still safe or if they possibly cut costs that risk lead?
Thanks
I just stumbled across this while researching stainless steel. UGH! Would the exposed lead look like the 1st picture? Looks like my daughter’s might be covered in a black paint? I’m on a desktop or I’d send a pic. I know this was written a while back. Hope you don’t mind sending an email. So frustrating lead is still being used in products, esp for kids!
We had a lead scare with some doors a couple years ago. Thankfully the kids tested negative, but they screamed and cried at getting tested. Worried I will need to be making another trip to the doc. Though, if it is covered in paint, she’s 7 and not exactly touching the bottom of the bottle often. So frustrating trying to do right and getting sabotaged by manufacturers
“immediately and proactively responded to my initial findings of Lead in the sealing dots of their older water bottles and took care of the problem “. This sounds like it wasn’t a problem for the company until somebody found out, or that they didn’t know…
yes
You had done a extensive study of the popular Stanley bottles at https://tamararubin.com/2023/03/full-xrf-test-results-for-a-2023-purchased-stanley-40-oz-flowstate-quencher-h2-0-tumbler/ .
Any chance you could update us on TheroFlask other than the lead seal? I hoped we could see the same testing on ThermoFlask as you did with the Stanley.
Given I know the Thermoflask has Lead, I don’t see a need to do a full assessment – as it is not a product that I would recommend. If someone wanted to send me one to test they can follow the instructions on this link: https://tamararubin.com/2019/08/tamara-can-i-send-you-one-of-my-dishes-or-other-items-to-test-for-lead-yes-maybe-but-read-this-whole-post-first-thanks/
Have you tested Yeti’s??
Yes – put “Yeti” in the search bar.
Thank you so much!! ❤️
Is it safe to put a bottle with a leaded sealing dot in the dishwasher (assuming the dot is not exposed)? Or could this spread lead around to other dishes? Thank you!
It depends on the bottle – but I would not (for risk of future exposure if it is not yet exposed.)
T
Thank you for the reply and ALL your hard work
I bought several Hydroflask from a major grocery store chain within the past year. All of the bottles interior metal began to discolor in spots where the interior sides meet the interior bottom. The best description is rust-like, but it was a darker greyish black color. Since the bottles were barely used and didn’t have any damage to them I contacted Hydroflask directly. Hydroflask had no explanation for the metal staining. Hydroflask had me email them pictures and they sent me replacements. I offered to send the bottles to be tested but Hydroflask didn’t want the bottles for testing. The replacements have barely been used and I recently noticed the same issue is occurring on one of the replacements. They are stored clean and dry. Have you heard of this issue happening with new Hydroflask bottles? Have you taken apart a Hydroflask bottle and tested to determine what metals are used in the seal of the interior bottom with the interior sides?
The interior is all stainless. I have not seen this. Do you have hard water where you are? (high mineral content water?) it could be from that. I would not use these with juice or coffee or other acidic beverages – only water.
I purchased the new S’well kids tracker cup and Planetbox Glacier water bottle. Have you ever tested any of these ? Or any S’well products at all. I currently already have some and didn’t realize they could potentially have lead.
Thank you!
Have you filed your cpsc for Zak yet? Interested in the stainless steel cups with the soft straws. We actually had one bottom pop off one today.
not yet
Have you ever tested Liewood or Citron stainless steel water bottles for lead? They both claim that their sealing dots aren’t made from lead … Thank you for your reply!