From the paint on your walls to the sauce on your pasta, lead contamination is far more widespread than most people realise. We break down the hidden risks — and what you can do about them today.

Most people associate lead poisoning with old houses and peeling paint. And while lead-based paint is one of the biggest culprits — particularly in homes built before 1978 — the reality is that lead has been woven into everyday life for well over a century. It was added to paint, plumbing, petrol, solder, ceramics, and even food packaging. The result? A legacy of contamination that still affects homes, buildings, and consumer products today.

A recent study from the FDA has added another layer to this story — detecting elevated levels of lead in foods as common as tomato sauce and baking powder. It’s a reminder that lead doesn’t just live on walls. It’s in our environment, our supply chains, and sometimes our food. And the first step to protecting yourself and your family is knowing where to look.

Lead in Everyday Products: More Common Than You Think

The FDA’s Total Diet Study (TDS) has been tracking contaminants in the American food supply since 1961. In results released earlier this year covering 2021 and 2022, researchers found some striking data points that deserve attention.

Tomato pasta sauce — a staple in millions of family kitchens — recorded lead levels of 223 parts per billion (ppb) in one national composite sample, the highest lead reading across the entire five-year study period. Baking powder, an ingredient quietly present in hundreds of everyday recipes, showed consistently elevated readings of lead, mercury, and arsenic across three consecutive years of sampling.

These aren’t niche or obscure products. They’re in almost every pantry. And because the TDS uses composite samples pooled from multiple brands to reach 50% market share, a single heavily contaminated product could be pulling the average up significantly — meaning individual products may be even higher.

This isn’t cause for panic, but it is cause for awareness. Lead accumulates in the body over time. There is no safe level of lead exposure — especially for children, pregnant women, and developing foetuses. When exposure comes from multiple directions simultaneously (food, water, paint, dust), the cumulative effect is what matters.

The Bigger Picture: Why Lead Is Still a Problem in 2026

Lead-based paint was banned for residential use in the United States in 1978. That ban came after decades of overwhelming evidence linking lead to serious neurological harm — particularly in young children, for whom even low-level exposure can cause irreversible developmental delays, reduced IQ, and behavioural problems.

But here’s the thing: the ban didn’t remove lead from existing structures. It simply stopped new lead paint from being applied. According to the US Census Bureau, approximately 38 million homes in the country still contain lead-based paint. Many of those homes look fine on the surface — painted over, renovated, well-maintained. The lead is there, underneath, waiting to be disturbed.

Renovation work is particularly high-risk. Sanding, drilling, cutting, or scraping painted surfaces in pre-1978 homes generates lead dust — invisible, odourless, and incredibly dangerous. Contractors, painters, plumbers, and DIY homeowners are all at risk. Lead dust settles on floors, work surfaces, and hands. It gets tracked through the house. Children playing on the floor ingest it. Workers carry it home on their clothes.

Beyond paint, lead can also lurk in older plumbing solder, certain ceramic glazes, vintage jewellery, imported toys, and as the FDA study shows, in food and food ingredients where contamination has entered the supply chain. The range of potential exposure sources is broad — which is exactly why testing matters.

“There is no safe level of lead exposure. The science has been clear on this for decades. The question isn’t whether lead is dangerous — it’s whether the lead in your home has been identified and addressed.”

Who Is Most at Risk?

ILead exposure affects everyone, but certain groups face disproportionately high risk:

  • Children under 6 — their developing nervous systems are far more sensitive to lead’s toxic effects than adults. Even small amounts can cause lasting cognitive damage.
  • Pregnant women — lead stored in bones can be released during pregnancy, crossing the placenta and affecting the developing baby.
  • Tradespeople and contractors — painters, renovation specialists, plumbers, and electricians working in older buildings face regular occupational exposure. EPA regulations under the RRP (Renovation, Repair and Painting) Rule require lead-safe work practices in pre-1978 homes.
  • Homeowners doing DIY renovations — without professional training or testing, it’s easy to unknowingly disturb lead paint and contaminate your living space.
  • Residents of older housing stock — particularly in low-income communities where homes are older and maintenance resources are limited.

The Solution Starts with Testing

You can’t see lead. You can’t smell it or taste it. The only way to know whether a painted surface in your home or worksite contains lead is to test it — and that’s where Luxfer LeadCheck™ comes in.

LeadCheck™ Swabs are an EPA-recognised lead detection solution trusted by professionals and homeowners alike. They’re fast, accurate, and require no lab equipment or special training to use. Simply crush and activate the swab, apply it to any surface — painted wood, metal, drywall, ceramics, or more — and watch for the result. A pink or red colour change indicates the presence of lead. It really is that straightforward.

For tradespeople, LeadCheck™ swabs are an essential compliance tool. Before beginning any renovation or repair work in a pre-1978 property, testing for lead is not just best practice — in many situations, it’s a legal requirement. Having reliable, on-site testing capability means you can identify hazards before work begins, protect your team, and give your clients confidence that you’re working safely and professionally.

For homeowners, LeadCheck™ swabs provide peace of mind. Whether you’ve just bought an older property, are planning a renovation, or simply want to know whether the walls your children play against contain lead, these swabs give you an immediate, reliable answer — without expensive lab fees or waiting days for results.

What the FDA Study Tells Us About the Bigger Picture

The FDA’s Total Diet Study findings on tomato sauce and baking powder are a useful illustration of a broader truth: lead contamination is an ongoing, systemic issue, not a problem that was solved in 1978.

The FDA’s own Closer to Zero programme — launched to reduce children’s dietary exposure to toxic contaminants — is evidence that regulators are still wrestling with the scale of the problem. Consumer advocacy groups have been pushing for tighter lead limits in food ingredients for years. As recently as 2020, a coalition of consumer protection organisations petitioned the FDA to update standards that were set decades ago and no longer reflect current scientific understanding of the risks.

That petition has not yet been acted on.

What this means in practical terms: don’t assume that because something is on a supermarket shelf, it contains no harmful contaminants. Don’t assume that because a building looks modern it has no lead paint underneath. And don’t assume that because the ban happened in 1978, the problem was solved.

Awareness, vigilance, and testing are the best tools available — and they’re more accessible than ever.

Take Action: Test Before You Assume

Whether you’re a homeowner doing weekend renovations, a contractor starting a job in an older building, or simply someone who wants to know more about what might be lurking in your walls, LeadCheck™ Swabs make testing easy.

Here’s what you get with Luxfer LeadCheck™:

  • Instant, on-site results — no lab wait times
  • EPA-recognised accuracy you can rely on
  • Works on painted wood, metal, drywall, ceramics, and more
  • Easy enough for homeowners, trusted by professionals
  • An affordable alternative to expensive laboratory testing

Lead has been a silent presence in our built environment for generations. The science is clear, the regulatory history is clear, and the risk is clear. The good news is that identifying the risk has never been simpler.

Red means lead. If you see red, you know. And if you know, you can act.