What Food Grade Actually Means
Nobody certifies a barrel as food grade. It is a compliance claim the seller makes about themselves. NSF/ANSI 61 is the one you can look up, and it is a different thing.
Every water barrel listing says food grade. So does every bucket, every jug and most of the reconditioned drums on Craigslist.
Here is the part nobody mentions: no organization issues a food grade certificate. There is no seal, no certifying body and no registry you can search. It is a claim a seller makes about their own product, meaning it complies with the FDA rules governing what may touch food. That claim is often true. It is never verifiable by you.
The certification that does exist
NSF/ANSI/CAN 61 is the standard written for exactly the thing you are doing. It “establishes minimum criteria for evaluating the health effects of materials, components, products, and systems in contact with drinking water,” and certification takes testing, a formulation review and an on-site audit, renewed annually.
The part that matters to a buyer: NSF publishes its listings. If a product is certified, you can look it up before you buy. If a seller says food grade and cannot point at a listing, you have a claim and not a fact.
There is also NSF/ANSI 51, which covers food equipment. Close, and not the same. Food and beverage contact is a different exposure from water sitting in a container for two years, and 61 is the one written for the second case.
None of this makes an uncertified barrel dangerous. It means the difference between the two options is knowable, and for a drum you will fill once and drink from in an emergency, it is worth knowing.
| The claim | Who says it | What it covers | Can you check it | Verdict |
|---|---|---|---|---|
| Food grade | The seller, about themselves | Compliance with FDA food-contact rules | No. There is no seal and no registry | A claim, not a certificate |
| NSF/ANSI/CAN 61 | NSF, after testing and an audit | Health effects of materials in contact with drinking water | Yes. Public listings database | The one that means something |
| NSF/ANSI 51 | NSF, after testing | Food equipment materials, food and beverage contact | Yes, same database | Right idea, wrong standard for water |
| BPA free | The seller | One chemical, absent | No | Says nothing about the other additives |
The resin code is not a safety rating
The number in the triangle tells you what the plastic is, for recycling. It does not tell you what else is in it.
HDPE, code 2 is what almost all water storage is made from. Rigid, opaque, chemically stable, cheap. It is the right material and its presence tells you nothing about the dyes, mold-release agents or stabilizers mixed into that particular batch.
PET, code 1 is single-use bottles and soda bottles. Fine for what it does. Thin, and it does not like heat.
LDPE, code 4 and PP, code 5 show up in lids, gaskets and collapsible containers. Both are used in food contact.
Codes 3, 6 and 7 are PVC, polystyrene and everything else, and none of them belongs in long-term water storage.
Two containers can both be HDPE code 2, and one of them can be a reconditioned chemical drum. The code is the material. It is not the history.
BPA free is marketing
BPA free means one compound is absent. It says nothing about phthalates, antimony, or the dozen other additives that make a plastic what it is, and some BPA replacements are less studied rather than safer.
It is not a bad thing to see on a label. It is just not the thing people think they are reading, and it is not where the actual risk in plastic storage lives.
The rule that does most of the work
CDC’s hard negative is worth more than every claim on every label: never use a container that held a toxic chemical. Not bleach jugs, not pesticide drums, nothing that arrived with a warning label. Plastic absorbs what it carried and rinsing does not undo it.
This is the entire risk with reconditioned drums, which are the cheapest way to buy 55 gallons of storage and are sold by the pallet. A blue drum that previously held food syrup is a bargain. The identical blue drum that held an industrial surfactant looks the same and is not recoverable. If the seller cannot tell you what was in it, the answer is no.
How to actually decide
Buying new. Look for an NSF/ANSI 61 listing. If it has one, you are done thinking about this.
Buying used. Ask what it held, in writing, and walk away from anyone who does not know. Blue HDPE drums are conventionally food and beverage; that is a convention, not a guarantee.
Reusing what you own. Soda and commercial water bottles are the safe reuse, because they held sugar water under pressure and clean out. Milk and juice jugs are not, because proteins and sugars stay in the plastic and feed exactly what you do not want. Everything else that has been through a dishwasher and never held a chemical is a judgment call.
Whatever you choose, it still gets sanitized before it is filled, because the container’s certification says nothing about what is living in it today. And if the plan involves drums, the questions about sourcing get sharper, because nobody buys one drum.