Editorial policy

How Clear Water Index handles evidence: Waterdrop and rival claims are attributed, prices are read on the rendered US store page and dated, and conflicts shown.

Last reviewed October 14, 2026

Evidence before recommendation

Merchant claims are attributed to the merchant. Certifier listings, product spec lines, lab test claims and customer reports answer different questions and are not treated as interchangeable proof.

What earns a recommendation

A recommendation must explain likely fit, drawbacks, alternatives, current cost or terms where available, and the evidence supporting the conclusion. Commercial value alone is not enough.

How conflicts are handled

When reliable sources disagree, the disagreement is stated and readers are told what to verify. Unknown information stays unknown rather than being filled with assumptions.

Corrections and updates

Changes to a product's price, certification, model line or terms trigger a review. Recommendations can change when stronger evidence appears, and material changes are rechecked before publication.