The Best Non-Toxic Waterproof Storage Cases of 2026
9 of the 15 waterproof storage cases PFAS Authority has graded score below its 70 point pass mark for PFAS and other toxins, 60% of the category, as of October 2026, leaving 6 that pass. The highest graded is Zarges Aluminium Eurobox 41l at 85 out of 100.
Every grade below is built from published materials, ingredient lists, certifications and brand disclosures, scored on one public rubric and ranked best-graded first. Each score links to the full breakdown of what earned it, and the numbers across the whole dataset are published too.
Are waterproof storage cases non-toxic?
6 of the 15 waterproof storage cases we graded clear our screen and 9 do not. Non-toxic is not a defined or regulated term, so what we can tell you is what our graders recorded. Beyond PFAS, the hazards found or left unruled-out on waterproof storage cases in this category are microplastics, VOCs and off-gassing, aluminium leaching, BPA and bisphenols, formaldehyde. The highest graded here is Zarges Aluminium Eurobox 41l at 85 out of 100.
Quick picks
A second brand to consider
Large 2-Layer KOR KitThe best grade here from a brand other than the winner
85 Excellent
Why Zarges Aluminium Eurobox 41l wins, and what it beats
Every grade on this page is one sum. A category starts from a baseline, each disclosed material or coating adds risk points, and each thing the brand or a third party has published takes them away. Below is that sum for the winner, then for 1 product it beats, so you can see exactly where the 45 points between the top and the bottom of this waterproof storage cases ranking come from.
The winner
Made of Aluminium alloy, bare unpainted surface.
- +15No PFAS disclosure. No public statement from the brand about PFAS in this product.
- +10Category baseline. The starting point for this type of product, before anything specific to this product is counted.
- -10Base material not linked to PFAS. The main material recorded for this product is not one associated with PFAS.
15risk points in total, which is a grade of 85
What the grade does not fix. It still carries one risk factor, No PFAS disclosure, and our graders recorded 3 other hazards on it. See the full breakdown.
What it beats, and why
What puts it behind. Waterproof / stain-resistant treatment, +35 points. Water-repellent coating treatments have historically used PFAS. The winner carries no such factor.
Made of Polypropylene hard case with unspecified waterproof coating/treatment.
- +35Waterproof / stain-resistant treatment
- +15No PFAS disclosure
- +10Category baseline
60risk points, a grade of 40
No product on this page was physically tested by us. Every number above comes from published materials, ingredient and coating disclosures, certifications and brand statements, scored on one public rubric. Formulations change without notice, so check the current product listing before buying.
What to watch for in waterproof storage cases
Beyond the PFAS grade, these are the things our graders recorded on the 15 waterproof storage cases in this category. We assess from materials, brand statements and published research. We do not lab-test.
- Microplastics
Plastic fragments small enough to shed from a product into food, water or air without anyone seeing it.
Found on 1 of these waterproof storage cases. Plausible but unconfirmed on 5 more, meaning nobody has ruled it out. EPA
- VOCs and off-gassing
Volatile compounds that evaporate out of a material at room temperature, which is what a new product smell is.
Plausible but unconfirmed on 5 more, meaning nobody has ruled it out. EPA
- Aluminium leaching
Aluminium migrating out of cookware, bakeware or an antiperspirant into food or skin.
Plausible but unconfirmed on 4 more, meaning nobody has ruled it out. ATSDR
- BPA and bisphenols
Chemicals that harden plastic and line metal cans, and the replacements sold as BPA-free.
Plausible but unconfirmed on 1 more, meaning nobody has ruled it out. NIEHS
- Formaldehyde
A preservative and resin ingredient that is also released slowly by a group of chemicals used in its place.
Plausible but unconfirmed on 1 more, meaning nobody has ruled it out. NCI
The safest waterproof storage cases we graded, lowest PFAS risk first
- 1
No coating to fail
- Aluminium alloy, bare unpainted surface
- We found no PFAS statement from the brand
- Aluminium leaching (acidic food contact)
3 hazards checked on this product, all on its full breakdown.
- 2
- Aluminum with optional plastic lids
- We found no PFAS statement from the brand
- Aluminum leaching
2 hazards checked on this product, all on its full breakdown.
- 3
- Aluminum with stainless steel hardware and latch mechanisms
- We found no PFAS statement from the brand
- Aluminum leaching (minimal)
3 hazards checked on this product, all on its full breakdown.
- 4
- Aluminum with rubber gasket/hinges
- We found no PFAS statement from the brand
- Aluminum corrosion and leaching
2 hazards checked on this product, all on its full breakdown.
- 5
Large 2-Layer KOR Kit
85ExcellentPFAS grade- Aluminum or steel case with plastic/polymer interior fittings
- We found no PFAS statement from the brand
- Polymer off-gassing from interior fittings
3 hazards checked on this product, all on its full breakdown.
- 6
Small 3-Layer KOR Kit
85ExcellentPFAS grade- Polypropylene and stainless steel
- We found no PFAS statement from the brand
- Polypropylene degradation under heat stress
3 hazards checked on this product, all on its full breakdown.
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- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
All the waterproof storage cases that pass, side by side
Sorted by score. A higher score means lower PFAS risk. Scored against 2 hazards that apply to this category.
| # | Waterproof Storage Cases | Score | Rating | Made of | Key concern |
|---|---|---|---|---|---|
| 1 | Zarges Aluminium Eurobox 41l | 85 | Excellent | Aluminium alloy, bare unpainted surface | Aluminium leaching (acidic food contact) |
| 2 | zarges K470 Aluminum Shipping And Storage | 85 | Excellent | Aluminum with optional plastic lids | Aluminum leaching |
| 3 | zarges K470 Aluminum Storage Case | 85 | Excellent | Aluminum with stainless steel hardware and latch mechanisms | Aluminum leaching (minimal) |
| 4 | zarges K470 Aluminum Storage Case 40845 | 85 | Excellent | Aluminum with rubber gasket/hinges | Aluminum corrosion and leaching |
| 5 | Large 2-Layer KOR Kit | 85 | Excellent | Aluminum or steel case with plastic/polymer interior fittings | Polymer off-gassing from interior fittings |
| 6 | Small 3-Layer KOR Kit | 85 | Excellent | Polypropylene and stainless steel | Polypropylene degradation under heat stress |
The verdict on waterproof storage cases
Zarges Aluminium Eurobox 41l grades 85 out of 100, the highest here. It is aluminium alloy, bare unpainted surface. We found no PFAS statement from the brand, so the grade rests on materials alone.
Choose zarges K470 Aluminum Shipping And Storage instead if you want a second option at 85 out of 100, aluminum with optional plastic lids.
We hold no price data, so nothing here is a budget recommendation. Grades are model-based assessments from published materials and disclosures, not laboratory tests.
The waterproof storage cases we would skip
Lowest scoring in this category, worst first, with the reason.
- 40Storm Case Lineman Storm Box - 24" Wheeled Waterproof Hard Case with Pick-and-Pluck Foam, Model 305, NavyPoor
Polypropylene thermal off-gassing
- 40Storm Case Pelican iM2750 Storm CasePoor
Gasket material degradation and leachate
- 40zarges K 424 XC Waterproof Metal Equipment Case with WheelsPoor
BPA & bisphenols
What we check on waterproof storage cases
- Flame retardants. Chemicals added to foam and electronics, some persistent and bioaccumulative. EPA
- Lead. A heavy metal with no safe exposure level, especially for children. ATSDR
Full point-by-point rubric on the methodology page.
The waterproof storage cases brands we found no PFAS statement from
We found no PFAS statement from 4 of the brands here. That is our research, not proof a brand has never said anything, and it is not evidence of harm. It is why none of them score well on disclosure.
Condition 1, Storm Case, Strongway, Zarges.
The brands that have published something, and what each of them actually said, are in our record of what every brand has said about PFAS.
Common questions about PFAS in waterproof storage cases
Are waterproof storage cases PFAS free?
9 of the 15 waterproof storage cases PFAS Authority has graded score below its 70 point pass mark for PFAS and other toxins, 60% of the category, as of October 2026, leaving 6 that pass. The highest graded is Zarges Aluminium Eurobox 41l at 85 out of 100. The lowest graded is Storm Case Lineman Storm Box - 24" Wheeled Waterproof Hard Case with Pick-and-Pluck Foam, Model 305, Navy at 40 out of 100.
Are waterproof storage cases non-toxic?
6 of the 15 waterproof storage cases we graded clear our screen and 9 do not. Non-toxic is not a defined or regulated term, so what we can tell you is what our graders recorded. Beyond PFAS, the hazards found or left unruled-out on waterproof storage cases in this category are microplastics, VOCs and off-gassing, aluminium leaching, BPA and bisphenols, formaldehyde. The highest graded here is Zarges Aluminium Eurobox 41l at 85 out of 100.
Which are the safest waterproof storage cases to buy?
On our grades, Zarges Aluminium Eurobox 41l at 85 out of 100, which we band as Excellent. Then zarges K470 Aluminum Shipping And Storage at 85. These are model-based assessments from published materials, ingredient lists, certifications and disclosures, not laboratory tests, so treat them as the lowest risk we can evidence rather than a safety guarantee.
Which waterproof storage cases grade best for PFAS?
Zarges Aluminium Eurobox 41l, at 85 out of 100, which we band as Excellent. It is aluminium alloy, bare unpainted surface. The runner up is zarges K470 Aluminum Shipping And Storage at 85.
Which waterproof storage cases should I avoid?
The three lowest scoring we hold are Storm Case Lineman Storm Box - 24" Wheeled Waterproof Hard Case with Pick-and-Pluck Foam, Model 305, Navy at 40, Storm Case Pelican iM2750 Storm Case at 40, zarges K 424 XC Waterproof Metal Equipment Case with Wheels at 40. The problem with the first is that skip or request materials disclosure on PFAS.
How can you tell if waterproof storage cases contain PFAS?
In this category we check for flame retardants, lead. Chemicals added to foam and electronics, some persistent and bioaccumulative. Language like stain resistant, water repellent or easy release usually means fluorinated chemistry even when PFAS is never printed on the box.
Which waterproof storage cases brands have not published a PFAS statement?
We found no PFAS statement from 4 of the brands we scored in this category, including Condition 1, Storm Case, Strongway, Zarges. That is what our research turned up, not proof a brand has never said anything, and a missing statement is not evidence of harm. It is the reason those brands cannot score well on disclosure.
Do you lab test waterproof storage cases?
No. We score from published ingredient lists, materials, certifications, disclosures and third party lab results where they exist. Where a product has been independently tested we use that result and say so.
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