
Under sink · Countertop · Faucet & shower
Treat it
at the
source.
Filtration for the tap you drink from, the counter you rent, or the shower you stand in. Plus the cartridges that keep it working.
Treat the water where you actually use it. One tap done properly beats a whole house done vaguely, and costs a tenth as much.
Three things we sell

01
Treat it at the source
Under-sink, countertop, faucet and shower. The further upstream you treat water, the less of the house has to deal with it.
Systems
02
The part that wears out
Filter media is consumable by design. Every system we sell takes a cartridge you can change yourself in under ten minutes, without a plumber.
Cartridges
03
Put back what filtration took
Fine filtration removes calcium and magnesium along with everything else. A few drops return the minerals that give water its structure and taste.
Minerals
04
The small parts
Wrenches, seals and a test kit. The things that go missing between one cartridge change and the next.
AccessoriesPick by how far you can plumb

The water
You are drinking a
local decision
Tap water is treated to a standard, not to a taste. The standard is a floor — legally safe — and it is set by the utility that happens to serve your address. Chlorine and chloramine are added deliberately, because the alternative is worse. Lead arrives from the pipe between the main and your kitchen, which nobody has surveyed.
Filtration is the only part of this you control. Everything upstream of your house was decided for you.
Maintenance
The only part
that wears out
A filter is a housing and a consumable. The housing lasts years; the cartridge lasts three to six months. Changing it yourself takes ten minutes and no plumber.
- Cartridges for every system we sell, from $19 to $79
- We email you when yours is due — you can ignore it
- No subscription to cancel and no automatic charge


Fit it once. Change a cartridge twice a year. That is the entire maintenance schedule.
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