Activated carbon adsorption
How a Whole-House Carbon Filter works
A point-of-entry carbon bed that strips chlorine, chloramine, and chemical taste from every tap.
Typical cost: $1,000–$3,500 installed
How it works
A whole-house (point-of-entry) carbon filter treats all the water entering your home, so the benefit reaches every shower and faucet — not just the kitchen.
Water flows through a tank packed with activated carbon. Carbon's enormous internal surface area adsorbs chlorine, chloramine, and many organic chemicals, the way a sponge holds onto color.
A bypass valve lets you service the unit without cutting off the house, and the media is periodically backwashed or replaced as it fills up (NSF/ANSI 42).
The components inside
What each part does, in the order water moves through the system.
- 1Inlet / bypass valveRoutes water in and lets you isolate the tank for service.
- 2Media tankPressure vessel that holds the carbon bed.
- 3Activated carbon mediaAdsorbs chlorine, chloramine, and organic chemicals.
- 4Distributor / riserSpreads flow evenly so the whole bed does work.
What it addresses
- Chlorine and chloramine taste and odor at every tap
- Many VOCs and disinfection byproducts
- General chemical and organic off-tastes
Pros & cons
Pros
- Whole-home benefit — clean-tasting, better-smelling water everywhere
- No salt, no sodium, and (most designs) no electricity
- Gentler on skin and hair than chlorinated water
Cons
- Does not soften water or remove dissolved minerals
- Media must be backwashed or replaced periodically
- Won't remove lead or heavy metals on its own
Best for
City-water homes that want chlorine/chloramine taste and odor gone from every tap.
Sizing basics
- Sized by the home's peak flow rate (GPM) and number of bathrooms.
- Bigger media beds give longer contact time and last longer before service.
- Chloramine removal needs a catalytic carbon media rated for it.
Solves these water problems
Next steps
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Sources
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Advertising disclosure
The Very Good Water Company is an authorized WaterTech dealer and earns revenue from installations and lead referrals.