What's in Your Water
What's in Your Tap Water?
Lead, PFAS, chlorine, hardness, nitrates and more: what each one is, how common it is, what the legal limits are and what the health research says.
Lead in Drinking Water: Sources, Testing and Filters That Work
Where lead in tap water comes from, what the 2024 lead rule changes, how to check your service line and test, and how to pick a filter certified for lead.
Strong evidencePFAS in Drinking Water: What They Are and What the EPA Rules Say
PFAS are long-lasting chemicals found in some US tap and well water. What the research shows, where EPA limits stand in 2026 and how to check your water.
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