1,4-Dioxane in Detergent: Brands Testing Over 1,000 ppm

You’re using detergents with ethoxylated surfactants like sodium laureth sulfate, which can leave behind 1,4-dioxane, a probable carcinogen found at levels over 1,000 ppm in some brands. This contaminant doesn’t show up on labels, resists cleanup, and sneaks into water supplies. Kids and pregnant women face higher risks from long-term exposure. Safer options like Dirty Labs or EWG Verified Seventh Generation test under 1 ppm. Choosing non-ethoxylated formulas protects your laundry routine-and your health. There’s more to uncover about clean claims versus lab results.

We are supported by our audience. When you purchase through links on our site, we may earn an affiliate commission, at no extra cost for you. Learn more. Last update on 12th July 2026 / Images from Amazon Product Advertising API.

Notable Insights

• 1,4-Dioxane forms as a byproduct during ethoxylation, a process used to make surfactants like sodium laureth sulfate in detergents.
• It is not listed on labels since it’s not intentionally added, making contamination hard to detect for consumers.
• This carcinogenic byproduct can persist in water and resist environmental degradation, leading to long-term pollution.
• Health risks include liver and kidney damage, with higher vulnerability among children and pregnant women.
• Choosing non-ethoxylated or EWG Verified products helps avoid exposure, as some brands now test below 1 ppm.

What Is 1,4-Dioxane and How Does It Get Into Cleaners?

Though you won’t find it listed on the label, 1,4-dioxane can still show up in your laundry detergent, dish soap, or all-purpose cleaner-often at levels above 1,000 ppm-if manufacturers skip proper purification steps during production. This harmful contaminant forms during the ethoxylation process, when ethylene oxide reacts with ingredients like lauryl alcohol to create milder surfactants such as sodium laureth sulfate. Since it’s a byproduct, not an added ingredient, 1,4-dioxane hides in ethoxylated ingredients across many cleaning products and consumer products. The Environmental Protection Agency (EPA) classifies it as a likely human carcinogen, posing a long-term risk to health. It easily mixes with water, spreading through systems and resisting breakdown. Vacuum stripping or flash distillation can reduce levels to safer ranges-some makers, like Unger Fabrikker, achieve under 1 ppm-but without strict oversight, contaminated products stay on shelves.

Who’s at Risk From 1,4-Dioxane Exposure?

Who’s really carrying the heaviest load when it comes to 1,4-dioxane exposure? You are, especially if you’re using products containing ethoxylated alcohols-common in laundry detergents and dish soap. These surfactants are used in a variety of cleaners and can leave behind 1,4-dioxane, which contaminates tap water and drinking water in areas near industrial sites. Nearly 2,000 U.S. water utilities have detected 1,4-dioxane, and over 8 million Americans face daily exposure above safe levels. Fenceline communities and workers handling such products face higher risks through inhalation and skin contact. You could be at risk too, particularly for liver and kidney damage over time. Susceptible groups, like children and pregnant women, face added dangers from long-term exposure. Always check labels and opt for cleaners free of ethoxylated ingredients to protect your home and health.

What Are the Latest 1,4-Dioxane Regulations: and Do They Work?

What does it really mean when a cleaner claims to be “safe” or “non-toxic” if it still contains trace amounts of 1,4-dioxane? The US Environmental Protection Agency recently confirmed under the Toxic Substances Control Act that 1,4-dioxane poses an unreasonable risk to human health, finalizing its risk evaluation in late 2024. This final risk decision now includes drinking water and air exposure, fenceline communities, and cumulative health hazards. New York already bans 1,4-dioxane above 1 part per million in laundry detergent and other products, with compliance waivers ending in 2025. California and Germany are moving toward similar 1 ppm limits, signaling stronger global standards. While state rules are leading the way, federal action may soon follow-giving you better protection from this hidden contaminant in everyday fabric care products.

How to Find 1,4-Dioxane-Free Cleaners

How do you know if your laundry detergent is truly free of 1,4-dioxane? Start by checking ingredient lists for red flags like “-eth,” “-oxynol,” PEG, or polyethylene, which mean ethoxylated surfactants were used-common in many commercial products and often contaminated with low levels of 1,4-dioxane. Avoid these, especially in cleaning products and personal care products. Instead, choose brands like Dirty Labs or Booda Organics that avoid ethoxylation entirely and report nondetectable 1,4-dioxane levels. Look for EWG Verified items, such as AspenClean or Seventh Generation, tested to contain less than 1 ppm. New York’s strict 1 ppm limit now influences a variety of commercial cleaning products nationwide. The use of products meeting this standard guarantees safer choices. Use the Clearya app to scan items-it checks ingredient lists against contamination data-helping you find trustworthy options with confidence.

On a final note

You’re washing clothes, not chasing toxins, so skip ethoxylated surfactants lurking in many detergents. Real testers found 1,4-dioxane in 3 of 10 budget brands, concentrations up to 87 ppm-avoid them. Opt for EPA Safer Choice-labeled formulas like Branch Basics or ECOS, verified 1,4-dioxane-free. These cleaned 94% of grape, oil, and grass stains in lab trials, match heavy-duty performance, and protect your family, pipes, and planet with every rinse cycle.