What Is DWR Coating and Is It PFAS?

DWR stands for durable water repellent, a thin finish applied to fabric, boots, carpets, and other textiles to make water bead up and roll off instead of soaking in. Many of the DWR formulas used for decades were built on PFAS chemistry, the same family of "forever chemicals" linked to health concerns in drinking water and consumer goods. Today, based on available materials and data, the outdoor and apparel industry is split between legacy fluorinated DWR and newer non-fluorinated alternatives, and figuring out which is which is not always obvious from a hangtag. This article explains what DWR is, which brands and product categories commonly use PFAS-based versions, how concerned you should realistically be, and what lower-concern alternatives look like based on third-party reporting and brand disclosures.

What does DWR coating actually mean?

DWR is a surface treatment, not a membrane. It is sprayed, dipped, or padded onto the outer layer of a fabric so that water forms beads and rolls away rather than wetting out the material. This is different from a waterproof membrane like Gore-Tex, which blocks water from passing through the fabric entirely. A jacket can have a waterproof membrane underneath and still "wet out" on the surface if its DWR coating has worn off, which is why older rain jackets eventually look like they are soaking through even though the inside stays dry.

How DWR coatings are applied

Manufacturers typically apply DWR during the textile finishing process, then cure it with heat to bond the coating to the fibers. Because the coating sits on the outside of the fabric, it is exposed to abrasion, dirt, and washing, which is why DWR performance fades over time and why care labels recommend specific washing and reproofing routines. The chemistry used in that coating is the central question for PFAS exposure, not the fact that a DWR finish exists at all.

Is DWR coating PFAS?

Not always, but historically, yes, in most of the DWR used on jackets, boots, tents, and upholstery. Traditional DWR formulas were built from long-chain PFAS (sometimes called C8) and later shorter-chain PFAS (C6), both of which belong to the broader per- and polyfluoroalkyl substances class. These chemicals were chosen because fluorine-carbon bonds are extremely stable and genuinely excellent at repelling both water and oil. That same stability is why PFAS persist in the environment and in the human body, which is the basis for ongoing regulatory attention from agencies like the EPA.

Which DWR chemistries contain PFAS

Long-chain C8 DWR was the industry standard through the 1990s and 2000s and is now largely phased out by major brands following regulatory pressure and voluntary commitments. Short-chain C6 DWR replaced it as a supposedly lower-risk option, though based on available data and ongoing research, C6 PFAS are still PFAS, still persistent, and still detected in blood and environmental samples, just with somewhat different behavior than C8. Neither version should be assumed to be a lower-concern choice simply because it is labeled "C6" on a spec sheet.

PFAS-free DWR alternatives

Non-fluorinated DWR typically relies on silicone-based, wax-based, or polyurethane-based chemistries instead of fluorocarbons. These alternatives have improved significantly in recent years, though independent testing has shown that many still lag slightly behind fluorinated DWR in long-term oil and heavy-rain repellency. Brand-stated PFAS-free claims are increasingly common, but it is important to distinguish a brand's own marketing language from independent, third-party laboratory verification, since the two are not interchangeable, and our methodology page explains how we weigh that distinction when scoring products.

Which brands and products use PFAS-based DWR?

Outdoor apparel is the category most associated with PFAS-based DWR, and several well-known names have publicly discussed phasing fluorinated chemistry out of parts of their lines in recent years, including Patagonia, The North Face, Columbia, REI Co-op, and L.L. Bean, alongside component suppliers like Gore-Tex, which has announced a shift toward non-fluorinated membranes and treatments in newer product lines. It's worth noting that a brand moving to PFAS-free DWR on some products does not mean every item in its catalog has converted, since older stock, budget lines, and certain technical performance tiers often still rely on legacy fluorinated finishes well into a transition period.

Beyond jackets, DWR and related fluorinated treatments show up in waterproof boots, swimwear, tents, umbrellas, upholstered furniture, and carpets, since the same water- and stain-repelling logic that works on a rain shell also works on a sofa cushion or a living room rug. If you are shopping across these categories, our roundups for waterproof boots swimwear clothing, and carpets and rugs are built around reviewing exactly this kind of disclosure.

DWR beyond outdoor gear

Grease-resistant food packaging, like certain fast food wrappers and pizza boxes, uses a chemically related idea, a fluorinated coating that repels oil and moisture so the packaging doesn't become soggy or translucent. This is a different application than textile DWR, but it draws on overlapping PFAS chemistry, which is part of why regulators tend to look at PFAS as a chemical class rather than product by product. Our fast food wrappers and pizza boxes guides cover that packaging side in more depth.

How worried should you be, the honest risk level?

Based on available data, wearing a jacket or boots treated with PFAS-based DWR is not considered an acute, high-dose exposure route in the way that drinking contaminated water can be. The primary concern researchers have flagged is cumulative, long-term exposure from multiple sources, including treated textiles, food packaging, certain cosmetics, and contaminated drinking water, which together can raise PFAS levels detected in blood over years of use. Studies have associated elevated PFAS blood levels with potential effects on cholesterol, immune response, and other health markers, but association is not the same as proven causation, and individual risk depends heavily on total lifetime exposure across all sources, not any single rain jacket or pair of boots.

What the science says, association is not causation

Regulatory and scientific bodies, including the EPA, have classified some PFAS compounds as likely carcinogenic at certain exposure levels and have set health advisories for PFAS in drinking water, which is the exposure pathway with the clearest evidence base so far. Textile DWR exposure is harder to quantify because it depends on how much PFAS actually migrates off a garment through wear, washing, and abrasion versus staying bound in the fabric finish. Treat this as a reason for informed caution and gradual substitution rather than panic over gear you already own.

DWR chemistry comparison

DWR Type	Contains PFAS	Water Repellency Performance	Oil Repellency	Typical Status Today
Long-chain C8 DWR	Yes	Very high, long-lasting	Very high	Largely phased out by major brands
Short-chain C6 DWR	Yes	High	High	Still common, being phased down by some brands
Silicone-based PFAS-free DWR	No, based on reviewed sources	Moderate to high	Low	Growing adoption, brand-stated PFAS-free
Wax or paraffin-based DWR	No, based on reviewed sources	Moderate	Very low	Common on canvas and work boots

Where else does PFAS-style coating show up at home?

Once you start looking for DWR-style finishes, they turn up in more places than most people expect, including waterproof phone cases, waterproof camera and lens protection cases, non-stick cookware coatings, and some carpet and upholstery stain guards. If you are reassessing your household for PFAS exposure broadly, it helps to look at categories together rather than one item at a time, so our waterproof phone cases waterproof camera cases, and cast iron skillets guides are useful starting points alongside the clothing and footwear categories mentioned above.

What about cosmetics and period care?

PFAS has also been detected in some cosmetics, particularly long-wear foundations, primers, and waterproof mascaras, where fluorinated ingredients help products resist sweat and water. Based on reviewed sources and our model-based scoring, the bareMinerals Prime Time Original Foundation Primer earns an Excellent rating of 100 out of 100 for lower concern, which reflects materials and disclosure data rather than an independent lab test. If primers and foundations are a concern area for you, our foundation and primer roundup and cosmetics category page go deeper into brand-by-brand findings. Period care products have also come under scrutiny for PFAS in moisture-wicking layers, and items like the Rubylove First Period Kit Teen Period Underwear, rated Excellent at 100/100 based on our model estimate from materials and public disclosure, are worth comparing against other options on our period care page.

What should you buy instead?

If reducing PFAS exposure from treated textiles is a priority, look for brands that explicitly disclose a move to non-fluorinated DWR, check for third-party certifications rather than relying solely on a hangtag claim, and remember that "water-resistant" branding alone tells you nothing about the chemistry used. For everyday hydration, where PFAS can also enter through contaminated tap water rather than coatings, filtered and well-reviewed bottles and pitchers are a reasonable complementary step. Based on our model-based safety scoring, several water bottles and filtration products reviewed by our team currently sit at Excellent, 100 out of 100, including the Soma Further Push Pull Water Bottle, the Santevia Glass Water System, the Clearly Filtered 40oz Insulated Stainless Steel Filtered Water Bottle, and the LifeStraw Home Award-Winning Glass Water Filter Pitcher.

How to read labels and marketing claims

Terms like "water-resistant," "weatherproof," and "repels water" are not regulated indicators of PFAS content, so they should not be used to infer anything about chemistry. Look instead for specific language such as "fluorine-free DWR," "PFC-free," or "non-fluorinated finish," and treat these as brand-stated claims unless a specific third-party lab or certification body is named. If you cannot find any disclosure at all, that absence of information is itself useful data when comparing two otherwise similar products, and it is the kind of gap our methodology accounts for when assigning a grade.

Practical steps for gear you already own

Washing treated jackets and boots according to label instructions, rather than skipping care routines, actually helps DWR perform longer and reduces how often you need to reproof or replace items. If you do reproof gear yourself, non-fluorinated spray-on treatments are now widely available and are a reasonable substitute for older fluorinated reproofing sprays, based on available third-party reporting on their composition. For whole-home concerns about PFAS entering through tap water, which is a separate but related exposure pathway, our whole-house filters roundup covers filtration options designed specifically around PFAS reduction claims and testing data.

Bottom Line

DWR coating is a water-repelling textile finish that has historically relied on PFAS chemistry, though the industry is gradually shifting toward non-fluorinated alternatives in response to regulatory and consumer pressure. The honest risk level from wearing PFAS-treated gear is best understood as a contributor to cumulative, long-term exposure rather than an acute hazard from any single jacket or pair of boots, and association with health effects is not the same as proven causation. Based on available materials and data, your best move is to favor brands that make specific, checkable PFAS-free claims over vague "water-resistant" marketing, and to address other exposure pathways, like drinking water, in parallel using resources such as our whole-house filters and water bottle comparisons. No product discussed here is being called "PFAS-free" or "safe" as settled fact, only rated for lower concern based on our model's review of materials and disclosure.

Frequently Asked Questions

Does every waterproof jacket use PFAS-based DWR?

No. Based on available brand disclosures, many major outdoor brands have shifted at least part of their lineup to non-fluorinated DWR in recent years, but older inventory, budget lines, and certain high-performance technical products may still use fluorinated finishes. Checking the specific product's materials page or asking the retailer directly is more reliable than assuming based on brand reputation alone.

Can washing remove PFAS from a DWR-treated jacket?

Regular washing does not remove the underlying DWR chemistry bonded to the fabric fibers, and in fact proper washing according to care labels tends to preserve water repellency longer rather than strip it. Washing can, however, shed small amounts of the coating over time through normal wear and abrasion, which is part of the exposure pathway researchers are still studying.

Is C6 DWR a safe alternative to older C8 DWR?

C6 DWR is not considered PFAS-free, since it is still a fluorinated chemical from the same broader PFAS family, just with a shorter carbon chain. Based on available research, short-chain PFAS behave somewhat differently in the body and environment than long-chain versions, but regulatory and scientific scrutiny of C6 compounds is ongoing, so it should not be treated as a lower-concern substitute without further verification.