Certified To What, Exactly
Two Standards, Not Just One Badge.
Most filters advertise "NSF certified" without saying which standard or what it actually tested. Here's the specific difference — and why it matters for what ends up in your glass.
Covers aesthetic effects — the things that affect how your water looks, tastes, and smells, not necessarily whether it's unsafe.
Covers health effects — contaminants that are regulated because of documented health risk, not just taste or appearance.
Most filters advertise a certification without saying which one, or which specific contaminants it was tested against. HAUSTAS systems are tested to both standards — see the certificate for the exact contaminant list and reduction claims.