Surprising fact: a nationwide review tested 312 samples between 2023 and 2025 to check contaminant levels in the U.S. supply.

You deserve clear, plain answers about what was tested and why it matters for your child’s nutrition.

The agency launched Operation Stork Speed in March 2025 to tighten testing on heavy metals and synthetic compounds. Closer to Zero guides the effort to reduce dietary exposure for babies and young children.

Testing covered lead, mercury, cadmium, arsenic, PFAS, and pesticides in water and ingredients. The Human Foods Program used methods that detect contaminants at extremely low amounts so you can trust the numbers.

We also include context on how brands and regulators modernize oversight so you can make informed choices about nutrition and product supply.

Key Takeaways

312 samples were examined to check contaminant levels across the supply.
Operation Stork Speed accelerated reviews and stricter testing protocols.
Closer to Zero focuses on lowering exposure for young children.
Specialized labs measured metals, PFAS, and pesticides at very low amounts.
These findings help you compare products and understand industry oversight.
For more background on brand differences and testing, see this comparison: product comparison and testing notes.

Understanding FDA Infant Formula Safety Results

This national survey offers a clear snapshot of what parents actually find on store shelves. The agency analyzed 312 samples from 16 brands to give a representative view of the market.

Market-basket purchases mean the data reflect the items you can buy today. Testing covered common contaminants and measured levels with sensitive lab methods.

What this means for you: the U.S. infant formula supply is considered safe and widely meets established standards. Experts say there is no reason to avoid available products.

“These findings affirm the safety of the current domestic formula supply,” said Dr. Steven Abrams, professor of pediatrics.

The data act as a signal-detection tool to guide risk management and protect public health. By sharing these results, the agency aims to support transparency and help parents make informed choices about the food and formulas they rely on.

The Role of Operation Stork Speed

The March 2025 launch marked a clear shift toward faster, tougher oversight of products meant for young children. This campaign moved testing into high gear and set stricter priorities for ingredient checks and manufacturing reviews.

The Closer to Zero Initiative

Closer to Zero aims to reduce dietary exposure to harmful contaminants in food for babies and toddlers. Officials stressed that protecting your child’s health is nonnegotiable.

“Protecting children’s health is a nonnegotiable priority for the agency,” said HHS Secretary Robert F. Kennedy Jr.

How this affects you:

Operation Stork Speed increased testing and oversight across the market.
Manufacturers are being asked about sourcing and process changes to cut contaminant levels.
Early results show the program helps spot and manage risks faster, giving you more confidence in available infant formula and related products.

How the FDA Conducts Market Basket Surveys

Understanding how samples are picked helps you read the testing data with confidence.

The agency purchased a market basket of 312 infant formula products from 16 brands so the lab work reflects what you can buy at retail. The mix included 278 powdered, 11 concentrated liquid, and 23 ready-to-feed items.

Sampling Methods

Collectors visit varied stores and buy products as any shopper would. Samples then move to clean rooms where technicians use dedicated glassware to avoid lab contamination.

Limitations of Market Basket Data

Market surveys capture a snapshot of products on shelves at a specific time. They do not show every production lot or seasonal variation.

Sample Type	Count	Why it matters
Powdered	278	Most common; shows broad market exposure
Concentrated liquid	11	Less common; useful for targeted checks
Ready-to-feed	23	Used without mixing; different processing

Key points: rigorous testing methods aim to measure true contaminant levels and guide public health action. For a full product testing overview, see the product testing overview.

Rigorous Testing Protocols for Infant Nutrition

Validated testing steps turn raw samples into dependable data you can use when choosing what to feed your child.

The Human Foods Program uses methods validated to official guidelines in accredited labs. Many of these techniques are published in the Foods Program Compendium of Analytical Laboratory Methods so the work is transparent.

For toxic elements, analysts rely on the Elemental Analysis Manual (EAM). Labs run samples in controlled clean rooms and follow strict cleaning procedures to avoid contamination during testing.

Scientists continuously refine methods to make detection more sensitive across different product types. That progress helps keep nutritional quality under close review.

Accuracy matters: validated methods ensure reliable results from many product batches.
Controlled labs: clean-room conditions reduce false positives from lab contamination.
Ongoing updates: new methods broaden coverage across ingredients and matrices.

For a deeper look at how brands compare in testing, see this product comparison and testing notes.

Key Findings on Heavy Metals in Formula

Lab data from hundreds of purchases reveal how heavy metals show up in common products you buy. The testing focused on lead, arsenic, cadmium, and mercury to give a clear picture of contaminant levels across the supply.

Lead and Arsenic Levels

Lead was not detected in 20% of samples. Ninety-five percent of samples contained less than 0.5 ppb of lead, well below drinking-water limits.

Arsenic was not detected in 6% of samples. Ninety-five percent fell under 2.0 ppb, a level the agency noted as very low for these products.

Cadmium Findings

Cadmium showed up in some items but often at very low amounts. It was not detected in 34% of samples, and 95% were below 1.1 ppb.

Mercury Detection

Mercury was rare. Ninety-five percent of samples had no detectable mercury and measured concentrations ranged up to 0.3 ppb when present.

Bottom line: detected metals were far below U.S. drinking-water limits.
What this means for you: most products contain undetectable or low levels of these contaminants, supporting confidence in the supply.

Pesticide Detection and Safety Standards

A broad pesticide screen helps you see whether common crop chemicals appear in the foods you buy for your child.

What was tested: labs screened for 318 different pesticides, including glyphosate and glufosinate.

Key findings: 99% of samples (309 of 312) had no detectable pesticides.

Glyphosate and glufosinate were not found in any tested item. Only three samples showed tiny traces:

chlorpyrifos — 0.25 ppb
malathion — 0.20 ppb
piperonyl butoxide — 0.20 ppb

Why this matters: most formula products you buy were free of measurable pesticide residues. The very low levels in the three samples are far below typical regulatory concern.

Agency use: these findings guide risk management and help refine monitoring to keep the food supply protective for your infant and family.

Analysis of PFAS and Forever Chemicals

The review focused on 30 PFAS compounds to see if these long-lasting chemicals appear in the supply you trust.

Key finding: 25 of the 30 pfas compounds were not found in any samples.

Understanding Parts Per Trillion

Perfluorooctanesulfonic acid (PFOS) was the most commonly detected compound. It appeared in about half of the samples at 0.51 to 6.0 ppt.

One part per trillion is roughly one drop in 1,000 Olympic-size swimming pools. Labs report in ppt because modern testing detects contaminants at extremely low concentrations.

“Most tested PFAS were absent, and detected amounts were measured in parts per trillion,” said agency scientists.

Most compounds were not present: 25 of 30 were undetected.
Detected levels were very low: PFOS ranged 0.51–6.0 ppt in positive samples.
The testing helps you see that water and ingredients are monitored with high precision.
These data support confidence that products on shelves contain only trace compounds when present.

Investigating Phthalates in Infant Products

Lab teams focused on phthalates and a single non-phthalate plasticizer to map occurrence across retail samples. They tested 21 phthalates plus one related plasticizer in 312 purchased items.

Key findings show that 167 of 312 samples (54%) had no detectable phthalates. Seven phthalates were never found, and five were only rarely detected.

DEHP was not detected in 81% of the samples, and DINP was absent in 83%. Where compounds did appear, measured concentrations ranged up to 145 ppb.

What this means for you: testing indicates that most formula and related products in stores were free from measurable phthalates. The agency characterizes detected levels as very low and continues work with manufacturers.

The study helps you compare products and judge exposure in everyday food.
Ongoing monitoring keeps pressure on supply chains to cut contaminants.

You can use these data to make informed choices about the formula you buy for your infant, knowing the testing emphasizes transparency and reduction of unwanted compounds like phthalates and pfas.

Comparing Formula Results to Human Milk

Direct comparisons of donor milk and commercial products help you put numbers into context. The agency also tested 110 human milk samples from a single-state donor milk bank to broaden the picture.

Most donor milk showed at least one detectable compound: 85% had a detect and 15% had none. Mercury appeared in 61% of the samples, cadmium in 57%, arsenic in 33%, and lead in 30%.

What this comparison means for you: contaminants can occur in both milk and infant formula, but the packaged supply remains monitored and widely meets benchmarks. The tests show that naturally occurring metals and trace compounds show up across food sources, not only in formulas.

The agency notes these donor-milk findings cannot be generalized to all breast milk. Breast milk remains the optimal source of nutrition whenever possible, even though environmental compounds may be present.

Human milk was also tested so you can compare lead, arsenic, mercury, and cadmium with formula.
These paired data give parents broader context about metals and other contaminants in milk and formulas.
The testing supports transparency and helps you make informed choices about infant nutrition.

Why Small Amounts of Contaminants Occur

Trace detections don’t always mean a product is unsafe; they often reflect the environment where ingredients grew. Soil, water, and air contain tiny quantities of metals and other compounds. Those background levels can enter crops and dairy used to make formula.

Modern labs can measure extremely small amounts. Detection at these low levels shows the power of testing, not a sudden hazard. The agency is working to set clear action levels so limits are practical and protective.

Manufacturers are talking about sourcing and processing changes to lower contaminant levels. This work helps reduce lead, arsenic, mercury, and cadmium in the supply over time.

“Finding small amounts is expected given environmental exposure; what matters is keeping levels well below health limits.”

Key points you should know:

Small amounts of contaminants occur naturally in food and water.
Most samples show low levels well under limits for infants.
Identifying these small amounts helps managers and makers reduce future exposure.

Cause	Typical compounds	What it means
Soil uptake	lead, arsenic, cadmium	Plants and milk can carry trace metals
Water and processing	mercury, metals	Small traces can appear during production
Analytical sensitivity	Various contaminants	Detects parts-per-trillion; not always hazardous

Expert Perspectives on Current Safety Data

Leading pediatricians and toxicologists weighed in on what the new testing data means for everyday feeding choices.

Dr. Steven Abrams said there is no reason not to use available formula in the U.S. He emphasized that overall supply monitoring supports parental confidence.

Dr. Sheela Sathyanarayana noted small amounts of heavy metals like lead, arsenic, mercury, and cadmium can occur naturally in milk and foods.

She stressed that synthetic substances such as phthalates and PFAS merit focused attention and that ongoing testing helps spot problems early.

“Continued monitoring and clear action limits will protect children and guide manufacturers,” said a public health expert.

Consumer advocates and major manufacturers both call for firm, enforceable limits so you can trust what is on the shelf.

Expert / Group	Key View	Primary Focus
Dr. Steven Abrams	Current supply is usable	Guidance for parents
Dr. Sheela Sathyanarayana	Natural metals vs synthetic concerns	Reduce phthalates, PFAS
Consumer advocates	Want enforceable limits	Regulatory action
Major manufacturers	Urge scientific standards	Protect national supply

Bottom line: experts agree the data support continued monitoring. That work aims to keep contaminant levels low and protect your child’s health.

Addressing Concerns About Synthetic Compounds

Regulators and scientists zeroed in on phthalates and PFAS after expert recommendations flagged them for review.

Why this matters to you: phthalates and PFAS are synthetic substances, so they do not come from soil or natural feed like some metals do. That difference means testing, source control, and manufacturer action look different.

Dr. Sheela Sathyanarayana stressed these compounds deserve special scrutiny. The agency followed that advice with extra testing and ongoing monitoring of samples and water used in production.

“Protecting children’s health is a nonnegotiable priority,” said HHS Secretary Robert F. Kennedy Jr.

What you can expect: manufacturers will be held accountable, more transparent data will be shared with parents, and oversight aims to drive levels down where possible.

Focus	Action	Benefit
PFAS and phthalates	Targeted follow-up testing	Clearer data for parents
Manufacturers	Engagement and process changes	Lower compound levels in formula and food
Monitoring	Regular sample reviews	Faster identification of risks

Future Steps for Regulatory Oversight

Officials will pair expanded testing with direct talks with manufacturers to drive measurable change. That mix of data-driven checks and industry engagement points the agency toward practical steps you can expect in the months ahead.

Manufacturer Engagement

Roundtable talks: Secretary Kennedy plans a May roundtable with formula CEOs to discuss modernizing oversight and source controls.

Why it matters to you: direct industry dialogue aims to reduce levels contaminants and improve transparency about supply chains and production practices.

Modernizing Oversight

The operation stork speed program will keep testing, refine methods, and establish action levels for arsenic and other compounds in formulas.

Key actions:

The food drug administration will continue targeted testing of metals, PFAS, and phthalates across products and water sources.
Agencies will set clear limits so manufacturers must meet defined levels or take corrective steps.
Closer Zero will guide reductions in dietary exposure and align nutrition and chemical monitoring.

“The agency will use all available resources and authorities to ensure products are safe and wholesome.”

Bottom line: you can expect continued testing, firm limits, and public updates that aim to keep the U.S. infant formula supply monitored for metals and other contaminants while protecting nutrition and health.

Conclusion

The newest market survey helps you understand how monitoring supports everyday nutrition choices.

The published results confirm that the U.S. supply meets current benchmarks and that routine testing keeps levels low. You can trust the transparency of shared data when comparing products and making purchases.

Agencies and manufacturers are working together through targeted oversight and process changes. That engagement aims to reduce contaminants further and keep product quality high for your child.

Bottom line: the focus remains on protecting your child’s health. As a parent, you have clear information to guide choices and confidence that ongoing checks will continue to improve safety.

FAQ

What did the FDA market basket surveys find about levels of contaminants in baby products?

The agency’s market basket testing looked for heavy metals, pesticides, phthalates and PFAS across multiple brands and types. Results showed mostly low or undetectable amounts, with a few samples registering trace levels of lead, arsenic, cadmium or mercury. Those traces were typically well below health-based screening values used by regulators. You should know that “low” doesn’t mean zero, but current data indicate exposure from these products is limited compared with established safety thresholds.

What is Operation Stork Speed and how does it affect testing?

Operation Stork Speed is a coordinated push to accelerate sampling, laboratory analysis and reporting across the supply chain. It helps authorities find any problems faster and verify that manufacturers follow good manufacturing practices. For you, that means increased testing frequency and faster public updates when compounds are detected, helping reduce supply uncertainty and support timely recalls if needed.

What is the Closer to Zero initiative?

Closer to Zero is an industry and regulatory priority to lower contaminant levels in milk-based products and water used in processing. The goal is to minimize exposure by encouraging manufacturers to source cleaner ingredients, improve filtration, and adopt manufacturing controls. You can expect incremental reductions over time as companies implement these best practices.

How does the FDA choose which samples to test in market basket surveys?

Officials use a targeted sampling plan that includes domestic and imported products across brands, different formulation types, and lots from retail and manufacturing sites. They focus on high-volume products and those with prior detections. Sampling is designed to represent what you can buy, not to be a comprehensive audit of every lot on the market.

What limitations should I understand about market basket data?

Market basket surveys provide a snapshot but can’t guarantee every single lot is identical. Sampling covers a selection of products and times, so rare spikes or isolated contamination might be missed. Tests also vary in sensitivity, and environmental factors can change results. Use the data as a measure of general exposure, not as absolute proof that every package is identical.

How rigorous are the testing protocols for baby nutrition products?

Laboratories use validated analytical methods and strict quality controls to measure heavy metals, pesticides, phthalates and PFAS at very low concentrations. Accredited labs follow chain-of-custody, reference standards and repeat testing when needed. These protocols reduce false positives and help ensure reported values are reliable and comparable across studies.

What were the key findings about lead and arsenic in tested products?

Lead and inorganic arsenic were detected at low concentrations in a small number of samples. Values generally fell well below health-based screening levels established for infants. Regulators recommend ongoing reduction efforts, but current results did not indicate widespread or dangerous contamination for the tested lots.

What did testing show about cadmium levels?

Cadmium appeared in some samples at trace concentrations. Most measurements were near or below laboratory reporting limits and far under levels associated with health concerns. Continued monitoring and supplier controls are recommended to keep these levels low.

Was mercury found in the tested products?

Mercury either was undetectable or present only at very low levels in the samples analyzed. Where detected, concentrations remained below regulatory benchmarks that would trigger health actions. Mercury monitoring continues because even small exposures can be significant for young children over time.

How are pesticides handled in these analyses?

Laboratories screen for a broad set of pesticides using sensitive methods. Most products showed no measurable pesticide residues, and any detections were generally at trace levels well under safety thresholds. Manufacturers also monitor ingredients like protein and oil sources to limit pesticide transfer into final products.

What about PFAS, the so-called forever chemicals—were they detected?

PFAS testing targeted multiple compounds and reported many non-detects and a few low-level detections. Results are often expressed in parts per trillion (ppt), and most values were very low compared with provisional health guidance levels. Because PFAS can accumulate, regulators and manufacturers are prioritizing source controls and method improvements to drive levels lower.

How should I interpret parts per trillion when PFAS are reported?

Parts per trillion is an extremely small measure—one drop in about 20 Olympic pools. When you see ppt values, it denotes trace presence. Even so, experts weigh ppt findings against toxicological benchmarks and estimated daily intake to determine actual risk. Low ppt detections usually translate to minimal short-term exposure for infants, but long-term cumulative exposure remains a focus.

Were phthalates found in packaging or product samples?

Phthalates were included in the screening panel. Most product samples showed non-detectable or very low phthalate levels. Where present, concentrations were below limits that would prompt regulatory action. Manufacturers are shifting to phthalate-free materials and improved packaging practices to reduce any potential migration into products.

How do product contaminant levels compare with those in human breast milk?

Direct comparisons are complex because breast milk composition varies and reflects maternal exposures. Some contaminants have been detected in both human milk and purchased products, but concentrations and exposure pathways differ. Health authorities still recommend breastfeeding when possible, noting its nutritional and immune benefits alongside monitoring for environmental exposures.

Why do small amounts of contaminants show up at all?

Trace contaminants can enter the supply chain through soil, water, agricultural inputs, processing equipment or packaging. Environmental persistence, background levels in crops or ingredients, and manufacturing cross-contamination contribute to small detections. The key is continuous supplier controls, testing and manufacturing improvements to minimize those inputs.

What do experts say about current monitoring data and your child’s health?

Toxicologists and pediatric nutrition experts emphasize that most detected amounts are low and below health-based action levels. They call for continued monitoring, improved methods, and source reductions. For parents, experts recommend following feeding guidance, using safe preparation practices with clean water, and consulting your pediatrician with specific exposure concerns.

How are synthetic compounds and additives addressed in testing and regulation?

Regulators screen for known synthetic contaminants and review additive safety through established approval processes. Testing targets both legacy and emerging compounds. When new evidence shows risk, agencies can update guidance, require product changes or set new limits. Manufacturers also reformulate proactively to avoid materials of concern.

What future steps are planned to strengthen oversight and reduce contaminant levels?

Planned actions include modernizing testing methods, increasing sample sizes and frequency, enhancing supplier audits, and engaging manufacturers to adopt cleaner ingredient sourcing. Agencies also aim to set clearer health-based guidance where gaps exist. These steps should further reduce trace contaminants and give you more transparency about product quality.

How are manufacturers being engaged to improve product quality?

Regulators work directly with companies on corrective actions, sharing test results and best practices. Industry groups and brands are adopting voluntary limits, investing in cleaner inputs, and upgrading filtration and process controls. This collaborative approach helps push contaminant levels lower while maintaining supply and nutrition standards.

How can you stay informed about ongoing test updates and recalls?

Follow official agency communications, subscribe to manufacturer alerts, and check reputable health sources like the Centers for Disease Control and pediatric societies. Sign up for recall notifications and periodically review product lot numbers at purchase if you want real-time assurance about specific items you buy.