Evidence and transparency · Sources checked on 23 September 2026
You want to choose water that suits you with confidence. Perhaps you arrived here after news about PFAS, a conversation with friends, or simply because you want more insight into what you drink. With so many messages, it can be hard to know which step makes sense. PureAqua helps you move from that question to a suitable solution, with insight into the tests and certifications behind our products.
In short: PureAqua product names are backed by technology from specialist suppliers. A different brand name does not change a technically identical system. When the model and filters match the tested version, the supplier's report is relevant to the product you buy from us too. Below, we show the available evidence for each solution and exactly what it demonstrates.
Evidence behind our PureAqua solutions
Below, you will see the product names used by PureAqua. Test reports and registers often use our supplier's technical name. We include it so you can trace the evidence without having to solve a complicated model puzzle yourself. Where versions or filter generations differ, we will help you check the right match.
The Source, used with purified-water taps
The Source provides purification behind some of our purified-water taps. Technical model WOW50-20-209-001 has a current IAPMO R&T listing under NSF/ANSI 58. It lists TDS reduction: independently verifiable evidence for this performance of the named model. The exact Source version and replacement filters in your tap determine whether the listing applies one-to-one. We are happy to help you check. The listing has no separate PFAS reduction claim.
PureFilter Mineral+, the standalone filter
PureFilter Mineral+ is our own brand name for a version of the Tappwater InlinePro SMR. The independent Equinox report shows results for five individual PFAS compounds under the test conditions described. You can inspect the evidence for the tested filter version yourself. Testing to an NSF method is not the same as official NSF product certification.
Countertop water purification appliance
Our Countertop water purification appliance is our version of the Tappwater Countertop RO SMR. Tappwater shares a summary of laboratory tests, including results for specific PFAS compounds. This lets you see the measured performance of the tested version. The summary is not an official NSF listing for the complete PureAqua appliance. We are happy to help with questions about the version and filter generation.
PureAqua 4-in-1 with purified and boiling water
Our PureAqua 4-in-1 combines purified and boiling water. Behind our product name are Tapure's NORTON tap, TAPOD V2 and RO3500 purification unit. Tapure shares independent SGS test results for the RO3500 unit, including PFOA and PFOS measurements with a new filter, as well as documentation for certain components. This makes the evidence behind the technology visible. The SGS test is not an official NSF product certification for the complete 4-in-1.
Putting the drinking-water news in context
According to the Dutch regulator, supplied drinking water meets the legal PFAS standards. Recent news also discusses a stricter health-based guideline, which is not the same as the legal limit. A result for a postcode area is not a measurement at your own tap. See the explanations from the Dutch National Institute for Public Health and the Environment (RIVM) and the Human Environment and Transport Inspectorate (ILT).
Even when supplied tap water meets legal standards, you may choose additional filtration or a different taste. We help you decide based on your wishes, the technology and the available evidence.
Test, certificate and mark: what is the difference?
Official product certification
A certification body assesses a named model against a standard. The official product listing shows which standard and specific reduction claims apply to that model. NSF/ANSI 58 concerns reverse-osmosis systems; the standard number alone does not mean that PFAS reduction is certified for every model. Check the exact substance claim in the listing.
Independent laboratory testing
A laboratory report describes the measured performance of a tested sample under stated conditions. This is useful evidence, but it is not the same as ongoing product certification. Check the substance tested, water quality, flow rate, filter age and whether the tested sample matches the product you buy.
Certification of a component
A membrane or filter material may have its own certification without the complete tap or system being certified. CE or FCC marking is not, by itself, evidence of PFAS reduction either.
NSF's guidance can help you check a filter claim and its official listing.
Four questions to ask about any water filter
- Which model? Does the model code in the evidence match the version that will be supplied?
- Which substance? A test for PFOA or PFOS is not evidence for every PFAS, nor automatically for TFA.
- What kind of evidence? Is it an official listing, an independent report, evidence for a component or a manufacturer's statement?
- What service life? A result obtained with a new filter does not automatically demonstrate performance at the end of its service life.
How to check a certification yourself
First ask for the exact model codes of the system and filters. Then search the official register of the organisation that issued the certificate, such as IAPMO R&T, NSF or WQA. Compare the model code, current status, standard and stated substance or performance claim. A standard number or logo without a matching product listing is not enough.
For PFAS, check whether the specific PFAS reduction claim appears for your model. Certification for TDS reduction, for example, is not automatically certification for PFAS reduction. The US Environmental Protection Agency (EPA) explains how to check the listing and PFAS claim. Dutch drinking-water standards and guidance from RIVM and ILT remain the relevant context in the Netherlands.
What about TFA?
TFA is a specific substance receiving attention. A result for PFOA, PFOS or other PFAS says nothing by itself about TFA. If suitable model-specific TFA evidence becomes available for a version we supply, we will add it here. Until then, we do not promise TFA reduction.
The right filters and proper maintenance matter
The right replacement filters, proper installation and timely replacement help your system work as intended. Filter compatibility can differ by version or generation. Unsure which set you need? We will help you find the right one for your system.
Frequently asked questions
Does NSF/ANSI 58 mean all PFAS are removed?
No. Check whether a separate PFAS reduction claim is listed for the exact model. The standard number alone does not establish that.
Is a laboratory test the same as product certification?
No. A laboratory test describes the performance of a particular sample under particular conditions. An official product certification has its own model scope, standard and listed claims.
Does a PFAS test tell you anything about TFA?
Only if TFA was actually tested and the result applies to the correct system. A test for other PFAS should not be treated as evidence for TFA.
How can I request evidence for my system?
Tell us which PureAqua product you have or are considering. We will help you find the relevant supplier model and test or certification documents, and clearly explain what they demonstrate.
