
Oasly Home
Limitless Hydration
Pure, mineralized water. Straight from your tap.
€24.90/month in Barcelona city · €27.90/month in Esplugues, Badalona, L'Hospitalet and Sant Cugat. No minimum term — cancel at any time with two months' written notice.
Key specifications
- Capacity
- 600 GPD
- up to 2,270 litres a day
- Output speed
- 10 seconds
- to fill a 330 ml glass
- Filtration
- 7 stages
- across 3 cartridges
- Drain ratio
- 2:1
- roughly 6× less water to drain than a 1:3 system
- TDS reduction
- 94–95%
- total dissolved solids
- Service
- Free installation
- and service in Barcelona
- Capacity
- 600 GPD
- up to 2,270 litres a day
- Output speed
- 10 seconds
- to fill a 330 ml glass
- Filtration
- 7 stages
- across 3 cartridges
- Drain ratio
- 2:1
- roughly 6× less water to drain than a 1:3 system
- TDS reduction
- 94–95%
- total dissolved solids
- Service
- Free installation
- and service in Barcelona
Reduction rates were measured at startup with a new membrane; real-world performance declines as filters age.

Direct flow. No tank.
to fill a 330 ml glass
2,270 litres a day
600 GPD rated membrane
2:1 filtered to drain
roughly 6× less waste than a 1:3 system
Filtration
Three cartridges. Seven stages.

Illustrative. Filter media are housed inside sealed cartridges.
Tap water in ↓
Composite pre-filter
Sediment and carbon
Stages 1–3 · every 12 months
- 1Pleated sediment layerRust, sand and silt down to 5 µm
- 2Activated carbon blockChlorine, chloramine, taste and odour
- 3Carbon compound layerVOCs, trihalomethanes and organic residues
Reverse osmosis membrane
600 GPD
Stage 4 · every 24 months
- 4Reverse osmosis membraneDissolved solids, microplastics, PFAS, lead, arsenic and nitrates
Remineralization filter
Alkaline and minerals
Stages 5–7 · every 12 months
- 5Alkaline mediaLeaves the water slightly alkaline
- 6Mineral restorationAdds calcium, magnesium and potassium
- 7Post-carbon polishFinal taste polish before the tap
Pure, mineralized water out ↓
Stage counts describe the filtration layers inside each cartridge. Replacement intervals assume typical Barcelona mains water and normal household use.

Almost nothing gets through
- Human hair70 µm
- Cysts — Giardia, Cryptosporidium3–15 µm
- Microplastics0.5–5 µm
- Dissolved salts, lead, PFAS0.001 µm
Oasly membrane — 0.0001 µm
reduction in total dissolved solids
membrane pore size
filtration stages across three cartridges
Particle sizes are typical published ranges. Reduction rates from SGS test report NBF25-0016876-01 (NSF/ANSI 58-2023). Rates were measured at startup with a new membrane; real-world performance declines as filters age.
What we remove
Heavy metals
- Lead(99.8%)
- Arsenic(99.9%)
- Chromium VI(99.6%)
- Cadmium(99.6%)
- Copper(99.3%)
- Mercury(97.1%)
- Barium(99.7%)
- Selenium(97.1%)
Chemicals
- PFAS — PFOS 99.6%, PFOA 99.4%
- Chlorine(99.5%)
- Chloramine
- Perchlorate(98.1%)
- VOCs
- Pesticides & herbicides
Microorganisms
- Cysts — Giardia, Cryptosporidium
Particles
- Microplastics
- Turbidity(97.7%)
- Sediment & rust
Other
- Total dissolved solids(94–95%)
- Nitrates(96.8%)
- Fluoride(94.7%)
SGS report NBF25-0016876-01: chlorine was tested to NSF/ANSI 42-2023; all other figured reductions were tested to NSF/ANSI 58-2023. Rates were measured at startup with a new membrane; real-world performance declines as filters age.
Alkaline adjustment
Before
Straight off the membrane
Purified water with almost no minerals left in it. It tastes flat.
After remineralization
Slightly alkaline, minerals back in
Calcium, magnesium and potassium are released back into the water, so it tastes like water again instead of tasting flat.
Ca²⁺
Calcium
Mg²⁺
Magnesium
K⁺
Potassium
Ionically activated minerals released by the remineralization cartridge, replaced once a year.
If you test it yourself
A TDS pen reads higher after remineralization than straight off the membrane, because the filter puts calcium, magnesium and potassium back in.
That higher number is the minerals, not contaminants. It is what you want to see.
Taste and readings vary with incoming mains water and how recently the remineralization cartridge was replaced.
Why Choose Oasly
Health
Pure water free from toxins, remineralized with essential minerals: calcium, magnesium and potassium.
Taste
Removes chlorine taste, and puts minerals back so the water does not taste flat. Water the way nature intended.
Convenience
Unlimited water on demand, fills a glass in just 10 seconds. No more carrying heavy bottles.
Eco-Friendly
No plastic bottles, and a 2:1 filtered-to-drain ratio — roughly 6× less water sent to the drain than a conventional 1:3 system.
Cost-Effective
Saves hundreds on bottled water yearly. Just €0.68-0.83 per day for unlimited pure water.
Looked after
We handle installation, filter changes and servicing. You just drink the water.
Oasly Home vs. tank system
Under-sink footprint
Water sent to drain
Water storage
Plumbing
Filter removal
Filter changes
Comparison figures for conventional systems are typical market values and vary by model.
We keep track of it for you
Filter changes, scheduled
We track the life of every filter and get in touch when one is due. You don't need to remember, monitor anything, or work out which cartridge it is.
Upgrades included
If we improve the system, subscribers get the upgrade at no extra cost.
A real person, on WhatsApp
Something not right? Message us and a technician answers — no ticket queue, no call centre.
Will it fit under your sink?
At least 45 × 45 × 45 cm clear. The Oasly Home measures 400 mm high, 380 mm deep, 140 mm wide, plus the remineralization filter beside it.
An earthed outlet under or near the sink. The system draws about 85 W only while it is producing water.
A standard kitchen shut-off valve on the cold supply. Mains pressure 1.4–5.5 bar, water temperature 4–38 °C. No extra plumbing work is needed in almost every Barcelona kitchen.
A saddle clamp fits onto the existing sink waste pipe. Nothing is cut or replaced.
The standard Oasly faucet needs a 1.3 cm hole in the worktop. The 3-way faucet replaces your existing mixer tap.
Send a photo of your under-sink cabinet on WhatsApp. We confirm before you book.
Message us on WhatsApp →Faucet options

Standard Oasly faucet
Included freeRequires drilling a ~1.3 cm hole in the countertop

3-way faucet upgrade
€79.90 add-onReplaces your existing tap, delivering both filtered and regular water
Yours to keepChoose Your Plan
Monthly Subscription
€0.83/day in Barcelona city
€24.90/month in Barcelona city (08001–08042) · €27.90/month in Esplugues, Badalona, L'Hospitalet and Sant Cugat.
No minimum term. Cancel at any time with two months' written notice.
- Installation: Included
- Filter Changes: Included
- Maintenance: Included
- Relocation in service area: Included
- Deposit: None
- Upfront cost: None
Yearly Subscription
€0.68/day in Barcelona city
€249/year in Barcelona city (08001–08042) · €279/year in Esplugues, Badalona, L'Hospitalet and Sant Cugat.
No minimum term. Cancel at any time with two months' written notice.
- Installation: Included
- Filter Changes: Included
- Maintenance: Included
- Relocation in service area: Included
- Deposit: None
- Upfront cost: None
One-Time Purchase
or €699 with installation in Barcelona
- Installation: €699 with installation in Barcelona
- Filter Changes: Customer purchases
- Maintenance: Customer responsibility
- Relocation in BCN: Not included
- Deposit: None
- Ownership: Customer owns
Subscriptions cover Barcelona city (postal codes 08001–08042) at €24.90/month or €249/year, and the extended area of Esplugues, Badalona, L'Hospitalet de Llobregat and Sant Cugat del Vallès at €27.90/month or €279/year. Both include the system, installation, yearly filter changes, all maintenance and service calls, and free relocation if you move within the service area. No deposit and no upfront cost on any plan. No minimum term — cancel at any time with two months' written notice.
Warranty & Service
On subscription: service included
Installation, every filter change, servicing, leak checks and relocation within Barcelona are all included for as long as you subscribe. No call-out fees, no parts to buy.
On purchase: 3-year EU statutory warranty
Buy the system outright and it carries the standard Spanish and EU conformity guarantee — three years from delivery, covering manufacturing defects and system performance.
The detail, if you want it
Cost comparison · 5-year overview
Monthly, yearly or buy outright — what each option really costs you after 1, 2, 3, 4 and 5 years.
View →Frequently Asked Questions
Product & Technology
Contaminants & Water Quality
Installation & Requirements
Subscription & Pricing
Maintenance & Support
Service Area & Logistics
Health & Safety
Environmental Impact
Comparisons
Technical Troubleshooting
About Oasly
- Main website: https://www.oasly.es
- Online shop: https://oasly.shop
- Product details: https://product.oasly.es
