We follow the science. Not trends. Not fear.

A filter is a fix; a test is a diagnosis. Filters are rated for specific contaminant groups, so buying one without knowing what’s in your water is guesswork. We measure what’s actually at your tap, then tell you which certified filtration — if any — is matched to those results.

Your utility’s Consumer Confidence Report covers water at the treatment plant, averaged across the whole system, and usually months after the fact. It can’t see what happens in the miles of main between the plant and your street, your service line, or your home’s own plumbing. We test the water you actually drink.

Compliant and safe are not the same thing. Many federal limits were set decades ago and reflect what utilities can practically achieve as much as what protects health. Lead’s health-based goal is zero, but no utility must act until 15 ppb. We report against the strictest health-based standard among the EPA, WHO, California, and the EU.

Your sample is analyzed at an ISO/IEC 17025-accredited laboratory on mass spectrometry instruments, not test strips. PFAS are measured in parts per trillion — roughly one drop in twenty Olympic swimming pools. Every batch runs alongside blanks and spiked controls to confirm the instrument is reading true.

PFAS are a family of thousands of synthetic “forever chemicals” used in non-stick, waterproof, and stain-resistant products. They don’t meaningfully break down in the environment or in your body, and are linked to cancer, immune, and thyroid effects. We test the PFAS compounds with the strongest health evidence and regulatory attention, including PFOA and PFOS.

After you act on your results — a filter, a service line replacement, a plumbing change — a retest confirms it worked. You only retest what your first report flagged, so it’s faster and narrower than the full panel. Subscribers get their retest included.

Collecting the sample takes a few minutes. Drop it in the prepaid cold-chain mailer the same day, and your full report is typically ready about ten days after the lab receives it.

Not yet. The current panel is calibrated for treated municipal water. Well water carries a different risk profile — nitrate, bacteria, arsenic, and local geology — and needs its own method. A dedicated well water test is in development.

No. ROSE tests your water, not your body, and nothing in your report is a diagnosis or medical advice. We explain what each result means for exposure and what you can do to reduce it. For health questions specific to you, talk to your clinician.

The kit, the lab work, and the guidance. You get a PFAS-free sampling bottle and VOC vial, an auto-inflating cold-chain return mailer with a prepaid label, analysis of 100+ contaminants at an ISO-certified lab, and a full report with plain-language context and a fix matched to your results. Shipping both ways is included.