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Treatment matched to a measured tap-water problem
Treatment matched to a measured tap-water problem: filters are sold as a general good; almost all of them treat one problem. One page per technology — jug…
This launch guide maps the topic, the source base and the practical questions. Check the linked official authority before acting on a rule, deadline, price or safety requirement.
What this guide covers
Filters are sold as a general good; almost all of them treat one problem.
One page per technology — jug filter, tap-mounted carbon, under-sink carbon block, reverse osmosis, ion-exchange softener, iron and manganese removal, UV disinfection, sediment pre-filter, activated alumina for fluoride, aeration for radon in water, distillation — with what it removes, what it does not, the running cost per thousand litres, the maintenance that everyone forgets and the bacterial regrowth that follows, and whether it is even needed for the local supply.
Plus a "match my lab report to a filter" decision table.
How to use it
Use Treatment matched to a measured tap-water problem to understand the inputs, units and assumptions before relying on an output. A useful result should be reproducible from the named source rather than presented as an unexplained score.
The page keeps the main question, its evidence base and its limits together in one canonical place. That makes it useful as a quick orientation and avoids splitting a broad subject into shallow pages before each narrower answer has enough verified material of its own.
Search vocabulary in four languages
Terminology changes across borders. These are example phrases people use for the same subject in Estonian, Finnish, Russian and English; they are included as a practical vocabulary aid, not as hidden keywords.
| Language | Example phrase |
|---|---|
| Estonian | veefilter kraanile kas on vaja |
| Finnish | vedenpehmennin kovalle vedelle |
| Russian | фильтр для воды какой выбрать для скважины |
| English | does a brita filter remove lead |
Evidence and provenance
The evidence map below records the primary, official or openly licensed material chosen for this guide. It is deliberately visible so a reader can tell the difference between a rule published by an authority, a measured dataset and an editorial explanation.
Source: WHO Guidelines for Drinking-water Quality household-treatment annexes (public), NSF/ANSI 42/53/58 claim definitions (facts cited), national waterworks quality reports (open). · checked 2026-09-09
Source names are preserved even where an authority changes its web address. No figure is added to this launch page unless it is already present in the cited source description or can be computed from a named dataset.
Scope and boundaries
/waterfilter is a consumer buying guide to filter formats; this starts with a measured contaminant or hardness result and maps it to a treatment claim. /more/water covers bottled and mineral-water composition.
Connected TempoLife guides
The following paths are the intentional hand-offs named in the brief. They keep adjacent subjects separate while making the next useful reference easy to find.
Watertest
Continue to the related TempoLife reference.
More Water
Continue to the related TempoLife reference.
Why it belongs on TempoLife
/watertest and /more/water.
Frequently asked questions
What does this guide cover?
Filters are sold as a general good; almost all of them treat one problem. One page per technology — jug filter, tap-mounted carbon, under-sink carbon block, reverse osmosis, ion-exchange softener, iron and manganese removal, UV disinfection, sediment pre-filter, activated alumina for fluoride, aeration for radon in water, distillation — with what it removes, what it does not, the running cost per thousand litres, the maintenance that everyone forgets and the bacterial regrowth that follows, and whether it is even…
What evidence does it use?
WHO Guidelines for Drinking-water Quality household-treatment annexes (public), NSF/ANSI 42/53/58 claim definitions (facts cited), national waterworks quality reports (open).
Where does this guide stop?
/waterfilter is a consumer buying guide to filter formats; this starts with a measured contaminant or hardness result and maps it to a treatment claim. /more/water covers bottled and mineral-water composition.
Turn the reference into a routine
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