Water & Air Protection

The water you drink and the air you breathe are two of the most direct ways contaminants reach your body, and neither one tells you much by taste or smell. Water that looks clean can still carry PFAS or microplastics, and air that smells fresh can still hold VOCs. The science here has moved quickly: a 2023 USGS study found PFAS in at least 45% of US tap water, and in 2024 researchers at Columbia University found that a liter of bottled water can carry hundreds of thousands of tiny plastic particles, most of them small enough to pass into the body's cells. The guides below walk through how to reduce these in your home, which filters and purifiers are worth it, what the certifications really mean, and where the marketing outruns the evidence.