Coming soon to Kickstarter

Reverse osmosis takes the life out of your water. We bring it back — by the drop.

MineralDose™ is an active dosing system for RO filtered water. It installs after your reverse osmosis filter, measures every drop you draw, and adds exactly what you choose — minerals, hydration, energy, and organic real-fruit infusions — matched to the pour.

New to reverse osmosis? See how it all works →

Get early access — subscribers get our lowest launch price.

Be first in line. We'll email the moment we launch, plus a sneak peek or two before.

Patent pending Early-bird pricing is exclusive to this list and strictly limited.

(01) — The Problem

RO gives you clean water. It also gives you empty water.

Reverse osmosis strips dissolved solids and minerals down to almost nothing — by design, the membrane removes 94–98% of the calcium and magnesium in your water.3 The standard fix — a passive remineralization cartridge — depends on water sitting still long enough to dissolve. During real household use, short draws and intermittent flow, there's rarely enough contact time.

The result: water that passes through a mineral cassette and barely changes.

And what you do get can't be predicted — it drifts with flow rate, cassette age, and how long the water sat. No number you can count on.

(02) — The Solution

So we stopped waiting for water to dissolve minerals. We dose them.

It measures the water in real time, calculates the exact dose for the level you've set, and adds it precisely — only while water is actually flowing.

Because every dose is measured to the water you actually draw — not guessed from time — you get a consistent, repeatable result on every pour: minerals, electrolytes, an energy blend, or a hint of real fruit, exactly as you set them.

ActivePreciseConsistent

The science

Demineralised water isn't neutral. It's a deficit.

Reverse osmosis is built to remove dissolved solids and inorganic minerals.11 The trouble is, the minerals it takes out are the same ones your body can't make on its own.

94–98%

of the calcium and magnesium in your water is removed by reverse osmosis.3

~48%

of Americans already take in less magnesium than recommended — before RO ever touches their water.4

10mg/L

the minimum magnesium the WHO suggests drinking water should carry. RO water can fall close to zero.1

Why it matters

The World Health Organization doesn't mince words: drinking water of very low mineral content “has a negative effect on homeostasis mechanisms, compromising the mineral and water metabolism in the body.”1 Its later review found that consuming demineralised or low-mineral water may alter the metabolism of certain minerals — and recommends adding calcium and magnesium back to treated water.2

These aren't trace luxuries. Magnesium is a cofactor in more than 300 enzyme systems — nerve and muscle function, blood-sugar and blood-pressure regulation, energy production.4 Calcium builds bone and runs your nerves, muscles and blood vessels;5 potassium keeps fluid balance and heart rhythm in check.6 Your body makes none of them — they have to come from what you eat and drink.

What the research shows

Across large population studies, more magnesium in drinking water tracks with lower cardiovascular mortality. A systematic review pooled the data to a significant inverse association — an odds ratio of 0.75.7 Swedish case-control studies found the same pattern,8 and reviews note that waterborne magnesium arrives as hydrated ions the body absorbs readily.9

To be clear, these are associations. The WHO is careful that the evidence “does not prove causality,”10 and we won't pretend otherwise. But the direction is consistent — and putting back what RO strips out simply returns your water to the mineral range the research keeps pointing to.

References & sources
  1. Kozisek F. Health Risks from Drinking Demineralised Water. In: WHO, Nutrients in Drinking-water. Geneva: World Health Organization, 2005. who.int
  2. World Health Organization. Calcium and Magnesium in Drinking-water: Public Health Significance. Geneva: WHO, 2009. who.int
  3. Kamalapriya V, et al. The Role of Low Mineral Water Consumption in Reducing the Mineral Density of Bones and Teeth: A Narrative Review. Cureus. 2023. PMC10732328
  4. NIH Office of Dietary Supplements. Magnesium — Health Professional Fact Sheet. ods.od.nih.gov
  5. NIH Office of Dietary Supplements. Calcium — Health Professional Fact Sheet. ods.od.nih.gov
  6. NIH Office of Dietary Supplements. Potassium — Health Professional Fact Sheet. ods.od.nih.gov
  7. Catling LA, et al. A systematic review of analytical observational studies investigating the association between cardiovascular disease and drinking water hardness. J Water Health. 2008. PMID 18401109
  8. Rubenowitz E, Axelsson G, Rylander R. Magnesium in Drinking Water and Death from Acute Myocardial Infarction. Am J Epidemiol. 1996. academic.oup.com
  9. Sengupta P. Potential Health Impacts of Hard Water. Int J Prev Med. 2013. PMC3775162
  10. World Health Organization. Hardness in Drinking-water — background document for the WHO Guidelines for Drinking-water Quality. 2011. who.int (PDF)
  11. US Environmental Protection Agency. Overview of Drinking Water Treatment Technologies. epa.gov

Sources describe minerals and demineralised water in general. Nothing here is a claim that any product diagnoses, treats, cures, or prevents any disease.

The taste

Pure water tastes flat. That's not an accident.

The minerals reverse osmosis removes are the same ones that give water its taste. Strip them out and most people find what's left dull and lifeless. Dose a measured amount back, and it reads as crisp and clean again — not salty, not heavy, just right.

“a flat, insipid taste”

is how the World Health Organization describes water stripped of nearly all its dissolved minerals — which is exactly what reverse osmosis produces, often just a few parts per million.12

fresh → bitter, dry, rough

In a blind sensory study, that's how the taste shifted as minerals were taken out. Tasters rated reverse-osmosis water significantly less pleasant than the same water remineralised — and “freshness” tracked with calcium.13

This is the difference you'll actually notice day to day — not a number on a lab report, but the glass in your hand. MineralDose™ restores minerals to the level you set, so every pour tastes the way you like it.

References & sources
  1. World Health Organization. Total Dissolved Solids in Drinking-water — background document for the WHO Guidelines for Drinking-water Quality (WHO/SDE/WSH/03.04/16). 2003. who.int (PDF)
  2. Vingerhoeds MH, Nijenhuis-de Vries MA, Ruepert N, van der Laan H, Bredie WLP, Kremer S. Sensory quality of drinking water produced by reverse osmosis membrane filtration followed by remineralisation. Water Research. 2016;94:42–51. PMID 26925543

Descriptions of taste are general and individual perception varies. Nothing here is a claim that any product diagnoses, treats, cures, or prevents any disease.

(03) — How It Works

Measure the water. Match the minerals. Mix. Done.

  1. 01

    Measure

    It senses every drop you draw, the moment you draw it — short pours and long ones alike.

  2. 02

    Compute

    It instantly works out the precise dose for the level you've set, staying accurate even on the smallest pour.

  3. 03

    Inject

    It adds exactly what you've chosen — minerals, electrolytes, an energy blend, or a real-fruit infusion — only while the water is flowing.

  4. 04

    Mix

    It blends everything evenly in an instant, so what reaches your glass is exactly what you dialed in.

(04) — The Engine

An entire dosing system, hidden under your sink.

The whole system tucks neatly inline beneath your sink — compact, sealed, and built to run quietly for years. Everything that touches your water is engineered to be serviced in seconds, with no tools and no plumber.

(05) — What Goes In

Minerals, hydration, energy, and real-fruit infusions.

Set a strength for each — minerals for balance, electrolytes for hydration, an energy blend for a lift, and an organic real-fruit infusion whenever you want it. Run them in any combination you like, each dialed to its own level.

Just minerals for everyday water. Electrolytes after a workout. An energy blend to start the morning. A fruit infusion for the kids. Or everything off — pure RO water to cook with. Every channel is independent: dial each up, down, or off, and blend up to three infusions to taste — balanced automatically, poured at one strength you set.

Your exact mix, confirmed right on the display.

Try it — build your water

Dial each channel, blend up to three infusions — balanced to 100% with one strength dial — and watch your pour change. On the real thing, the dial does exactly this, and the display confirms your mix every pour.

Minerals 05

Lock the early-bird price
Minerals05
HydrationOFF
EnergyOFF
Infusionsup to three

Or start from a saved preset:

Energy — a caffeine, taurine, L-carnitine and B-vitamin blend. Caffeinated teas and organic real-fruit infusions blend to taste. Shown: the flagship Elixir with all four channels — Elevate doses minerals + infusions; Element is pure minerals.

The mineral channel doses back a full-spectrum ionic trace-mineral complex — concentrated from the Great Salt Lake, with 99% of the sodium removed.

  • MgMagnesium
  • ClChloride
  • KPotassium
  • SO₄Sulfate
  • BBoron
  • LiLithium

…plus 70+ more naturally occurring ionic trace minerals — the full spectrum found in mineral-rich water, in the ionic form the body absorbs most readily.9

(06) — The Controller

Engineered like the appliance it is.

A smart controller does the work. On the Elevate and Elixir, a dedicated dial lets you set your level by feel, with a clear, glanceable display — in sync with the unit wirelessly, no app required for everyday control. The Element keeps it lean: no dial — set your mineral level once in the app, it's saved to the device, and every pour after that is automatic. No phone needed to fill a glass.

  • Doses in proportion to the water you actually use — and only while it's flowing.
  • A tactile dial with a clear, glanceable display — included with Elevate and Elixir.
  • Joins your home Wi-Fi to track cassette levels — refill alerts, and auto-ship if you've enabled it.
  • Recognizes every cassette automatically — what's loaded, and how full it is.
  • Precise delivery, right down to the smallest trickle.

(07) — The Cassettes

A serviceable system, not a sealed box.

Everything you add lives in a swap-in cassette — a mineral and electrolyte concentrate, an energy blend and organic real-fruit infusions. They click into place and seal in seconds, with no tools and no mess. The system recognizes each cassette automatically — it knows what's loaded and how full it is — so you can swap a half-used cassette out and load it back in later without wasting a drop. Element carries one dock; Elevate, three; Elixir, six.

Scroll the family →

Minerals

Balanced restoration for everyday water.

Hydration

Electrolytes for hydration, dialed to your level.

Energy

A clean lift — caffeine, taurine, L-carnitine and a B-vitamin complex.

Infusions

Lemon, orange, raspberry, mango, caffeinated black tea, caffeinated green tea — and more to come.

Refill

Sealed, mess-free concentrate that clicks into place — no drips, no measuring.

Refills & the Refill Plan

A mineral cassette lasts a year. Refills come to you.

The mineral concentrate is dense — one 16 oz cassette treats about 600 gallons, so it lasts about a year, not weeks. Electrolytes, energy and infusions are lighter, so you'll refresh those more often. Replace only the channels you actually dose.

Infusions: lemon, orange, raspberry, mango, caffeinated black tea, caffeinated green tea — and more to come.

Minerals

Most concentrated

A dense concentrate — one cassette treats hundreds of gallons.

  • 16 oz$49 Makes 600 gallons — about a year for the average home

Hydration

Electrolytes for hydration — lighter than the minerals, so refreshed more often.

  • 32 ozPricing at launch

Energy

A clean lift — caffeine, taurine, L-carnitine and a B-vitamin complex.

  • 32 ozPricing at launch

Infusions

Organic, real-fruit — lighter than the minerals, so refreshed more often.

  • 32 ozPricing at launch

The Refill Plan · save 15%

We ship before you run low.

Your system tracks every cassette's level and reports over home Wi-Fi when one runs low — so with auto-ship enabled, each cassette ships on its own cadence, matched to what you actually have left. Free shipping; skip, pause, or cancel anytime.

Reserve the Refill Plan

Pricing is indicative and subject to change. Cassette life varies with household size and dose level — figures shown for a typical 2–4 person household.

(08) — The Campaign

We built the hard part. Back us to put it in your kitchen.

MineralDose™ is patent pending, with a working approach proven in prototype. Kickstarter funds tooling and certification toward shipping. Backing early gets you the lowest price we'll ever offer — and a front-row seat.

Where we are: prototype validated. What's left: production tooling and water-contact certification, in progress for our target ship window.

Lock My Early-Bird Price

(09) — Launch Day

Here's what launch day will look like.

Three models, one idea: measure every drop, add exactly what you choose. Subscribers on the list get first access and early-bird pricing when we launch.

Minerals only · 1 dock

Element MD1

$399 early bird

Pure mineral restoration — the essential MineralDose™, distilled to one perfect channel. Set it once; every pour is automatic.

  • Mineral channel — full-spectrum ionic complex
  • 1 cassette dock
  • Automatic cassette recognition
  • Set once in the app — saved to the device
Get first access
Minerals + infusions · 3 docks

Elevate MD3

$599 early bird

Minerals plus organic real-fruit infusions — two flavors loaded and ready at any time.

  • Mineral + infusion channels
  • 3 cassette docks
  • Two infusions loaded at once
  • Dial + display control
  • Automatic cassette recognition
Get first access
The complete system

Elixir MD6

$799 early bird

Every channel — minerals, hydration, energy and infusions — exactly as you set them, on every pour.

  • All four channels: minerals, hydration, energy, infusions
  • 6 cassette docks
  • Three infusions loaded at once
  • Dial + display control
  • Automatic cassette recognition
Get first access

Add-on for any model: mineral-cassette refills and a refillable cleaning cassette with cleaning tablets.

Get the Early-Bird List

(10) — Who We Are

Built by ActiveWater Labs.

"Passive cartridges promised remineralized water and quietly under-delivered on every pour. So we engineered a system that measures the water and doses to match — and proves it with a number." — Founder, ActiveWater Labs
  • Patent Pending
  • Working Prototype
  • MineralDose™ · USPTO Serial 99605445

(11) — Answers

Questions, answered.

Where does MineralDose™ go in my setup?

It installs inline on your reverse-osmosis water filter, between the membrane and your faucet, and is designed to fit standard residential RO filter setups. Full fitting details ship with the unit.

Does it work with any reverse-osmosis filter?

Yes — it's compatible with all standard residential reverse-osmosis systems, tank or tankless, and works with both common RO tubing sizes, 1/4" and 3/8". It installs after the membrane on the clean-water line, so it drops into virtually any setup. Final fitting details ship with the unit.

Does MineralDose™ replace my RO filter?

No — it works alongside your reverse osmosis filter, not instead of it. Your RO filter keeps removing contaminants; MineralDose™ installs on the clean-water line just after it and adds minerals back — plus electrolytes, an energy blend, or a real-fruit infusion if you want them — right before the water reaches your faucet. Keep your filter; MineralDose™ simply gives that purified water its minerals back.

How is this different from a remineralization cartridge?

A passive cartridge relies on water sitting in contact long enough to dissolve minerals — which often doesn't happen on short, intermittent household draws. MineralDose™ instead measures the water volume and actively injects a matching mineral dose, so concentration stays consistent regardless of flow or how long water sat.

Can I control how much mineral is added?

Yes. You set a target concentration with the rotary knob, expressed per unit volume. The system doses to that target on a volumetric basis.

What minerals does it add?

A proprietary liquid mineral formulation suitable for drinking-water remineralization. The exact formula is proprietary; what we guarantee is a quantified, consistent dose you set yourself.

Can it add electrolytes, energy or infusions?

Yes — on the Elixir, which doses all four channels: minerals, electrolytes for hydration, a caffeinated energy blend (caffeine, taurine, L-carnitine and a B-vitamin complex), and organic real-fruit infusions — Lemon, Orange, Raspberry, Mango, plus caffeinated black tea and caffeinated green tea, with up to three infusions loaded at once, each at its own strength. The Elevate pairs the mineral channel with infusions (two loaded at once), and the Element is dedicated to pure mineral restoration. On any model you can turn everything off for pure RO water to cook with.

How does it measure the water?

It senses the exact amount of water you draw, in real time, and uses that to calculate each dose — so the amount you set is the amount you get, even on a quick pour.

Does the pump run all the time?

No — it only runs while water is actually flowing, and it stays precise even on the smallest draws.

How do the minerals refill?

Concentrate comes in a sealed, mess-free cassette that clicks into place — no drips, no measuring. MineralDose™ recognizes each cassette automatically and tracks how full it is, so you can swap cassettes whenever you like and load a partly used one back in later — nothing is wasted. Refills will be available; cassette life and pricing will be published before launch.

Does it need Wi-Fi or an app?

Every model joins your home Wi-Fi — that's how it tracks cassette levels, lets you know when a cassette is running low, and keeps refills coming automatically if you've enabled auto-ship. The companion app (iOS and Android) connects through that same home network. On the Elevate and Elixir the dial and display handle everyday control, and the app is optional — presets, cassette levels from your phone, and PIN locks so kids can't dispense the energy blend or caffeinated infusions. The Element is set up from the app and then set-and-forget: your mineral level is saved to the device, every pour is automatic — no phone needed — and you'll only open the app again to change the level or switch minerals off.

What's the status — is this real?

MineralDose™ is patent pending with a working prototype. Kickstarter funds production tooling and water-contact certification (in progress). Crowdfunding timelines can shift; we'll be transparent about progress with subscribers.

Don't miss the lowest price this will ever be.

Subscribers get first access and early-bird pricing — strictly limited, this list only.