Editorial Methodology

Our editorial approach is to answer a practical question directly, explain the conditions that matter and make the limits visible. These pages are educational guides, not a claim of individual scientific review or product testing.

Topic selection

Topics follow the questions owners ask when choosing, installing and maintaining UV systems. Similar search phrases are consolidated into a single useful guide. We do not publish location pages without real provider information or duplicate articles solely to target keyword variations.

Sources and technical claims

We prefer EPA, CDC, FDA, NSF and other primary technical sources. Manufacturer manuals are used for product-specific requirements and are not generalized into universal limits. Reference sections identify supporting reading; an agency link does not mean that agency endorses this site or a product.

Sources are identified on each guide so readers can inspect the basis for its claims. No independent expert review is claimed. Model-specific dose, performance, service and installation requirements must be checked against current documentation before they are used in a real project.

Comparisons and commercial relationships

Future comparisons should identify the model, application, evidence, replacement parts, warranty and ownership assumptions. Manufacturer claims must be separated from independent measurements. We do not invent ratings, experience or test results. Affiliate or sponsored relationships, if added, will be disclosed before or beside the affected recommendations and links. Research-based comparisons are based on cited documentation; they are not hands-on tests. Any future hands-on review must identify what was tested, by whom and under what conditions. See our commercial disclosure policy.

Corrections and updates

A correction report should identify the page, disputed statement and supporting source. Substantive corrections should be documented, with the affected page updated and any related guides checked. The current contact page explains the availability of the feedback channel.

Diagrams and estimates

Illustrations are conceptual, not model-specific instructions or promised results. Prices require a source, date and defined scope; the site uses quote worksheets instead of unsourced national averages. Future reviewer profiles will be added only after a real review is completed.

Evidence hierarchy and technical standards

Government and public-health guidance is preferred for safety, water testing and consumer precautions. Engineering references and applicable technical standards help explain system design and test conditions. Peer-reviewed research is considered in the context of its methods, setting and measured outcomes, rather than citing a result without its limitations.

For product-specific requirements, use the current manufacturer manual and verify independent certification or testing where a claim relies on it. A certified component, a “tested to” statement and a currently certified complete system are not assumed to mean the same thing. Public-water-system engineering references inform principles; their procedures and requirements are not automatically residential installation instructions.

Conflicting evidence and uncertainty

When findings differ, describe differences in dose, geometry, source water, airflow, organisms and endpoints. For example, an engineered coil study and a consumer evaluation of a small air cleaner may answer different questions. Do not translate device inactivation into a medical promise or a guaranteed household saving.

Unresolved or weakly supported points should be described as uncertain. We do not average incompatible results into a precise claim. Material corrections should be documented and checked across related guides; dates are not added merely to imply fresh review.