01
What PFAS, PFOA, and PFOS mean
PFAS is a group name, not one single substance. PFOA and PFOS are specific PFAS that have been studied and regulated differently over time. Reading a headline about one PFAS does not tell you what is in your water or what a particular filter can do.
This is why a broad statement such as “this filter removes PFAS” needs more detail. The exact substance, product model, test method, operating conditions, and certification or performance record all matter.
02
A city report and a home test answer different questions
A public water report describes sampling in the utility system. It can help you understand the source and what the utility has measured, but it is not a test of the water after it travels through the service line and your home's plumbing.
A home test samples your tap. A private-well test asks a different question again because the source, pump, plumbing, and local conditions are unique. One test does not check every possible substance, so the panel should match the concern.
03
A sensible homeowner action path
First, identify the question: are you reviewing public data, checking a private well, or choosing treatment for drinking and cooking? Next, look at the exact product documentation. EPA guidance points homeowners toward a filter independently certified for PFAS reduction, typically under NSF/ANSI 53 or NSF/ANSI 58, before relying on that claim.
Finally, maintain the product. A certification is not a promise that an overdue cartridge or membrane will perform forever. Follow the manufacturer's replacement and use instructions, and keep the paperwork for the exact model.
04
What this means for a Rio y Vida conversation
We do not assume that every Rio y Vida or Puronics system reduces PFAS, PFOA, or PFOS. If that concern is part of your decision, ask for the exact model's applicable certification or data sheet. If the documentation is not available for the specific product, the claim should not be made.
A consultation can help you sort the water source, the test question, the place where you want treatment, and the care plan. It should not replace official guidance or independent product documentation.
Official sources
Short educational videos are planned
We plan to record a short video on reading a PFAS filter claim—how a public water report, a sample from your home, and an exact product claim differ. It is not recorded yet, so for now the written sections above and the official sources are the material we can point you to.