Does the lead pipe in your county line up with throat cancer rates?
Yes. A new US county-level study links higher tap water lead with higher head and neck cancer rates, even after controlling for smoking and HPV.
What's actually in it
Old lead pipes and lead solder hide in plenty of US service lines. The mouth, throat, and salivary glands soak up whatever is in the water you drink, swish, and swallow every day. Lead builds up and hangs around for years. Smoking and HPV are the biggest known head and neck cancer drivers. Lead in water now joins the list.
What the research says
A 2026 study in Otolaryngol Head Neck Surg mapped lead in US drinking water against head and neck cancer rates across counties. Counties with higher lead in tap water had higher cancer rates. The team controlled for smoking and HPV, and the signal held. The mouth and throat are exposed to the water for hours each day, which helps explain the dose response.
Look up your tap water on the EWG Tap Water Database or your utility's annual report. Run cold water for 30 seconds before drinking from older taps. Use a filter certified to NSF/ANSI 53 for lead. Aquasana, Berkey, and Clearly Filtered all sell tested options. If you own your home with lead service lines, replacement is the only real fix.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Association of Lead in Drinking Water With Head and Neck Cancer in the United States | Otolaryngol Head Neck Surg | 2026 |
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