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Water filters at home
Water filters at home: the honest version of a category built on implication: what NSF/ANSI 42, 53, 401, 58 and 244 each actually certify, and the long list…
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
The honest version of a category built on implication: what NSF/ANSI 42, 53, 401, 58 and 244 each actually certify, and the long list a jug filter does not touch — nitrate, most PFAS, microbes.
Item pages cover activated carbon against ion exchange, reverse osmosis and UV, cartridge life in litres rather than "30 days", hardness in °dH from the local utility reports for Tallinn, Tartu, Helsinki and Riga, softeners and the sodium they add, the PFAS limits arriving under the drinking water directive, lead pipes and the flush rule, well testing, and hiking filters. ~16 pages.
How to use it
Use Water filters at home 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 | veekannu filter mida eemaldab |
| Finnish | vedensuodatinkannu mitä poistaa |
| Russian | фильтр кувшин что удаляет |
| English | do water filter jugs remove PFAS |
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: Directive (EU) 2020/2184 parameter list (EUR-Lex, reusable), NSF certification listings and standard scopes (public search), utility water quality reports from Tallinna Vesi, HSY and Rīgas ūdens (official), published studies on bacterial growth in filter jugs (cited). · 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
/water is bottled mineral content; this is treatment at the tap.
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.
Why it belongs on TempoLife
/water, /home, /outdoors.
Frequently asked questions
What does this guide cover?
The honest version of a category built on implication: what NSF/ANSI 42, 53, 401, 58 and 244 each actually certify, and the long list a jug filter does not touch — nitrate, most PFAS, microbes. Item pages cover activated carbon against ion exchange, reverse osmosis and UV, cartridge life in litres rather than "30 days", hardness in °dH from the local utility reports for Tallinn, Tartu, Helsinki and Riga, softeners and the sodium they add, the PFAS limits arriving under the drinking water directive, lead pipes and…
What evidence does it use?
Directive (EU) 2020/2184 parameter list (EUR-Lex, reusable), NSF certification listings and standard scopes (public search), utility water quality reports from Tallinna Vesi, HSY and Rīgas ūdens (official), published studies on bacterial growth in filter jugs (cited).
Where does this guide stop?
/water is bottled mineral content; this is treatment at the tap.
Turn the reference into a routine
TempoLife brings food, movement, sleep and everyday health habits into one private place when you want to track what happens next.