About Tern Water
Tern Water is an independent UK publication about domestic water quality, run by a small editorial team, not a manufacturer, installer or salt supplier. The name carries on from a former water-filtration brand at this domain, but we are unconnected to that company and sell no hardware ourselves. We explain how we research: hardness figures come from published water-company data and our own postcode tooling; product verdicts are based on hands-on testing where we have the unit, plus manufacturer specs, verified owner reviews, and consistent criteria (sizing, salt type, warranty, running cost, installation). We disclose affiliate links plainly and state that commission never changes a ranking. We name no fake experts and claim no credentials we do not hold; where a point needs a plumber, an electrician or your water supplier, we say so and tell readers to check before they buy or install. Corrections are welcomed and dated.
How we research
Every guide is built from primary and recognised sources, planning portals, regulations, manufacturer specs and official data, and we link out rather than hardcode figures that change. We do not invent statistics, named experts or credentials. Where we are unsure we say so, and where a reader points out a mistake we correct it.
Get in touch
Spotted an error, want to suggest a topic, or interested in working with us? Email hello@ternwater.com.