If you read any state PFAS law, you will see the phrase intentionally added PFAS again and again. It decides whether your product is banned, whether you must report it, and what proof you need. Yet most brands never get a clear explanation of what it means.
This post explains the term in plain words, shows how it differs from contamination, and covers what evidence you should collect.
Key takeaways
- "Intentionally added" means PFAS put in on purpose to do a job in the product.
- Most state laws also count PFAS that form when an added chemical breaks down.
- Trace contamination is usually outside the definition, but total fluorine limits can still catch it.
- The burden is on you to know. Supplier declarations are the core proof.
The basic definition
Minnesota, Maine and New Mexico use very similar wording. In simple terms, intentionally added PFAS are:
- PFAS that a manufacturer deliberately adds to a product or one of its components, and
- PFAS that have a functional or technical effect in the product, and in most laws,
- PFAS that are breakdown products of an added substance and also have a function.
The key idea is purpose. If someone in your supply chain chose to use a PFAS chemistry to make a fabric shed water or a pan release food, that PFAS is intentionally added. It does not matter if your brand did not add it yourself. A mill, a coater or a component supplier adding it is enough.
Examples: intentionally added or not?
| Situation | Intentionally added? |
|---|---|
| A fluorinated DWR finish sprayed on jacket fabric | Yes |
| A PTFE nonstick coating on a frying pan | Yes (check fluoropolymer exemptions by state) |
| A fluorinated stain guard on sofa fabric | Yes |
| A PFAS processing aid used to make a plastic, with residue left in the part | Often yes, if it has a technical effect; check the rule |
| Tiny traces from contaminated water used at a mill | Usually no |
| Cross-contamination from shared equipment | Usually no, but may still show up in total fluorine tests |
The tricky cases are processing aids and polymer additives. Ask suppliers directly whether any PFAS was used in making the material, not just whether it is "in" the final product.
Why "intentionally added" is not the whole story
Some laws do not stop at intent. California's textile law, AB 1817, defines "regulated PFAS" in two ways: PFAS intentionally added for a function, or PFAS present at or above a total organic fluorine (TOF) threshold. That threshold was 100 parts per million from January 1, 2025, and drops to 50 ppm on January 1, 2027.
So a fabric with no intentionally added PFAS can still fail in California if contamination pushes total fluorine over the limit. Read more in California's 50 ppm limit for 2027 and total organic fluorine testing explained.
The EU's packaging rules (PPWR) work the same way for food-contact packaging: they set concentration limits rather than asking about intent. See PPWR PFAS limits.
What the definition means for reporting
Under Minnesota's Amara's Law, manufacturers must report products sold in the state that contain intentionally added PFAS. The report covers the product, the PFAS present, the amount or a concentration range, and the purpose of the PFAS. If the exact chemicals are unknown, the rule allows reporting based on total organic fluorine.
That "purpose" field is a direct test of intent. If you can't say why a PFAS is there, you probably don't know enough about your supply chain yet. Our Minnesota PFAS reporting guide walks through the fields.
Who is responsible for knowing?
The manufacturer. In most state laws, the "manufacturer" is the company whose brand is on the product, or the importer if the brand owner is not in the US. That means a consumer brand that designs in the US and makes overseas is usually the responsible party.
Regulators know brands don't run the mills. They still expect you to ask. Minnesota's guidance says manufacturers who can't get full data by the deadline should report what they have and keep records of their efforts to get more.
How to collect proof that PFAS were not added
You need evidence at the component level. Here is a practical approach:
1. Map components
List every material and part in each product: fabrics, membranes, coatings, trims, zippers, threads, foams, adhesives, inks and packaging. See bill of materials mapping.
2. Ask the right question
Don't ask, "Is this PFAS-free?" Ask: "Was any PFAS intentionally added to this material, or used in its manufacture, for any function?" Ask for the chemical name and function if yes.
3. Get it signed
A declaration should name the material, the supplier, the date, and the person signing. Use a consistent form. See our supplier PFAS declaration template.
4. Test the risky ones
For coated, laminated or water-repellent materials, a TOF screen is a cheap sanity check. A low result supports the declaration. A high result tells you to dig deeper.
5. Keep the trail
Store the request, the follow-ups and the answers. A clear outreach log is evidence of good faith.
Common misunderstandings
- "Our fabric is PFAS-free because the label says C0 DWR." C0 means no fluorine-based DWR, which is good, but it says nothing about the membrane, the trims or the lining. Check each part.
- "We didn't add it, our supplier did." Most laws put the duty on the brand anyway.
- "Below 100 ppm means we're fine." Not for intentionally added PFAS. Intentional use is banned in covered categories at any level.
- "Fluoropolymers aren't PFAS." Under Minnesota and Maine law they generally are. New Mexico exempts some fluoropolymers. See fluoropolymer PFAS rules.
Key terms
- Intentionally added PFAS: PFAS deliberately added to a product or component for a function or technical effect, including functional breakdown products in most state laws.
- Functional use: The job the PFAS does, such as repelling water, resisting stains or releasing food.
- Unintentional PFAS: Traces from contamination, shared equipment or recycled inputs. Usually outside intent-based laws, but caught by concentration limits.
- Regulated PFAS (California): Intentionally added PFAS or PFAS above a total organic fluorine threshold in textiles.
How Secuabase helps
We ask each supplier the right intent question for every component, chase the answers, read each declaration, and flag weak or missing proof. You get a clean file per product that shows what was asked, what was answered, and where the gaps are. Your team signs; we never sign for you.
For our first partners we run it free on one product line. Book a quick chat.
FAQ
What does intentionally added PFAS mean?
PFAS added to a product or component on purpose to give it a function, such as water repellency or nonstick performance. Most laws also count functional breakdown products of an added substance.
Does trace contamination count?
Usually not under intent-based laws. But California's textile rule and the EU PPWR use concentration limits that catch PFAS no matter how they got there.
How do I prove PFAS were not intentionally added?
Collect signed supplier declarations per component and back high-risk materials with test data.
General information, not legal advice. Definitions vary by state; check the exact statute that applies to you. Facts checked October 2026.
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