← Technology WikiFDA Food-Contact Material Requirements
In the US, materials that touch drinking water in a purifier must comply with FDA food-contact regulations (21 CFR) — the baseline for material safety claims in the American market.
How it works
- 21 CFR Part 177 covers specific polymers (e.g., polypropylene, polyethylene) for food contact.
- NSF/ANSI 51 and 61 are the usual certification paths that demonstrate compliance in practice.
- Applies to housings, tubing, fittings, seals, and tank linings — everything the water touches.
- EU has its own framework (EC 1935/2004, EU 10/2011 for plastics) — FDA compliance alone doesn't cover Europe.
Key specifications
| US regulation | 21 CFR (food contact) |
| Practical cert path | NSF/ANSI 51 / 61 |
| EU equivalent | EC 1935/2004, EU 10/2011 |
| Scope | All wetted materials |
What buyers and QC should check
- Ask suppliers which specific CFR section each wetted material complies with — 'FDA approved' without a section number is a red flag.
- For EU-bound products, budget for EU 10/2011 testing separately.
Free one-page QC checklist (PDF)
The buyer checks from this entry, condensed for the factory floor or the inspection. No signup needed.
Download free PDF checklistCommon questions
Is 'FDA approved' the right term?
Strictly, FDA doesn't 'approve' most food-contact materials — the correct claim is 'compliant with FDA 21 CFR' for the specific material and use. Watch for this in supplier claims.
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