The house journal.

Water, explained without alarm: minerals, limescale, engineering. Every article is dated, sourced and proofread.

01The journal

Three articles to begin with.

One article at a time, dated and sourced — the journal grows with the seasons.

Understanding · 6 min

What are we drinking, exactly?

Minerals, residues, units: reading a water analysis the way a technician does — and knowing what "compliant" really means.

Read

Engineering · 5 min

What purifies an astronaut's water

Aboard the ISS, almost all the water is recovered and reprocessed by membrane — the same family of technology as under a sink.

Read

Every claim published here is sourced at the end of the article — or marked as still to be confirmed.

02The letter

One letter a season, no more.

Understanding your water, caring for your home — four letters a year, without advertising.

03And then

Understand before you equip. When you are ready to measure, the analysis kit is complimentary.

Test my water