Editorial Policy

Clear standards, explicit tradeoffs.

We prefer useful over comprehensive, and accurate over flattering.

Research approach

We use official product documentation, public specifications, recognized certification databases, public health guidance, and editorial synthesis. We avoid repeating broad contaminant claims unless they are tied to a model and a source.

How we evaluate products and brands

We evaluate products on fit: contaminant coverage, certification clarity, replacement cost, installation burden, flow rate, support, and long-term availability. A strong product can still be wrong for a specific household.

Updates and corrections

We update pages when certification claims change, products are discontinued, replacement costs move materially, or a factual issue is reported. Corrections can be sent to david@waterfilter.guide.

Health-related content

Water quality content is not medical advice. When a concern may be health-relevant, we frame the answer conservatively and point readers to water testing, local authorities, and certified treatment professionals.

Independence

Independence does not mean having no commercial interests. It means not letting those interests dictate the verdict. If a cheaper, less glamorous option is the better fit, that is the recommendation.