Understanding · 6 min
What are we drinking, exactly?
Minerals, residues, treatment: learning to read a water analysis the way a technician does.
International availability on request.The house confirms service for your address before anything is sent.
Complimentary analysis kit, delivered by post
The experience of pure, healthy water.
High-performance membrane purification, installed and serviced by a Geneva maison. Since 2006, a single point of contact, from analysis to the last mile.
Complimentary · No obligation · Results within 10 days
02The signature
“Putting water back in its rightful place.”
03The house, since 2006
Born of a simple refusal.
Not standing idle while water, the first of our commons, takes on what the era leaves in it, and our kitchens fill with single-use plastic.
Measure first, equip next, maintain always: that is the maison since 2006. On our scale, home after home, we take back the last mile.
Public water is controlled up to the network; the final metres belong to each building. Those are the metres we take charge of, no subcontracting, with the technicians who fit your water and come back to service it every year.
2006
Geneva. The first installation fitted by the house.
One face, one name. The same technician installs your water and comes back to maintain it, year after year.
The OSVIA maison, Geneva, since 2006
04The proof in numbers
Twenty years of control, home after home.
Every home equipped is water taken back at the source, and the habit of water packs that fades away.
2 500
households equipped and looked after
20
years of uninterrupted mastery
100 %
of installers certified by the house
2
analyses frame every installation, before and after
House register, Geneva, January 2026 · house facts, all markets
05Test my water
The kit, in four steps.
The front door of the house: everything begins with a measurement.
01
Request the kit
Three fields and an address. Dispatched within 48 hours, complimentary.
02
Sample
Three minutes at the kitchen tap, bottles provided.
03
Send it back
The envelope is pre-paid; the analysis goes to the partner laboratory.
04
Discover
Your personal Water Score, and an appointment, only if you wish.
06The range
The right object, installed to last.
Materials chosen to last, glass, stainless steel and nickel. Every installation is decided with a maison technician, and followed over time.
At the point of entry
Water for your whole home
The whole house served: baths, kitchen, appliances preserved.
By quotationReply within 24 h
- Network survey, complimentary
- Fitted by the technicians of the house
- Annual servicing, scheduled
- Sized room by room
Under the sink, dedicated tap
ANNA by OSVIA
Perfect drinking water, in the simplest of motions.
By quotationReply within 24 h
- High-performance membrane, 90–99 % rejection depending on the contaminant
- Three cartridges, one motion, under 30 seconds
- Discreet indicators, inside the cabinet
- Installed and followed by the house
Professionals
Bespoke
Hotels, practices, laboratories: dedicated studies.
By quotationReply within 24 h
- On-site audit
- Dedicated sizing
- Contractual maintenance
No public pricing, every project receives its written quotation within 24 hours. Consumables are ordered from the client area.
07The legitimacy
The same family of membranes already serves:
- Crewed spaceflight, ISS
- University hospitals
- Analytical laboratories
- Hospital dialysis
Documented performance of our membrane purification technology: 90–99 % rejection depending on the contaminant, membrane technical table, 2026. The detail by family lives on the product pages, with its methodology.
08The reviews
5.0
out of 5
The house's recent public reviews, all rated five stars. The consistency, home after home, says more than any promise.
Google reviews, the maison's public profile09Your free kit
A few lines, and your water speaks.
What happens next
Within 48 h
The kit is dispatched by post, to your address.
Within 10 days
The partner laboratory returns the analysis.
Then, you decide
A clear report, and an appointment only if you ask for one.
A question first?
The house replies in English, Monday to Friday. Support →
10Questions
Straight questions, clear answers.
The rest lives at Support, or on the phone, with a technician of the house.
Is the kit really free?
Yes, the kit, the postage and the analysis are complimentary. We prefer to begin the relationship with a concrete measurement of your water.
Does installing ANNA require building work?
No. ANNA sits under the sink, with a dedicated tap fitted cleanly by our technicians, in half a day.
And the servicing?
Three cartridges. One motion, under thirty seconds, no tools. The house lets you know when the moment has come.
Does the taste really change?
Water freed of what clutters it recovers a clean, neutral taste, the kind that lets tea, coffee and cooking express themselves.
And if my water is already good?
All the better: the report will say so, figures in hand, and so will we. The house does not install where it is not useful.
11Insights
Water, explained without alarm.
A sober, sourced journal, understand before you equip.
The home · 4 min
Limescale, neither friend nor foe
What it does to your appliances and your skin, and what it does not.
Engineering · 5 min
What purifies an astronaut's water
Aboard the ISS, about 98 % of the water is recovered, a discipline of water the house takes to heart: measure first, then treat.
Your water has a story.
Measure it, the kit is complimentary, and what follows is up to you.