What each option does
- Pitcher filter: water drips through a cartridge, usually carbon-based, into a container. Good for taste and odor in small amounts. Capacity is limited and cartridges are changed often.
- Under-sink reverse osmosis: multi-stage filtration plus a membrane, feeding a dedicated faucet. Living Water installs an alkaline reverse osmosis version.
- Whole-home system: treats water where it enters the house. Living Water's city water systems are described as removing chlorine and chloramine.
Side-by-side comparison
| Factor | Pitcher filter | Under-sink RO | Whole-home system |
|---|---|---|---|
| Install | None | Under the kitchen sink | At the main water line |
| Covers | What fits in the pitcher | Drinking and cooking faucet | Every tap, shower and appliance |
| Speed | Wait for it to filter | On demand | On demand |
| Upkeep | Frequent cartridge swaps | Scheduled filter and membrane changes | Periodic media or filter service |
| Fridge space | Takes a shelf | None | None |
| Best for | Renters, small households, taste | Families and heavy drinking-water use | Shower odor, scale, whole-home comfort |
Certification matters more than the shape
Pitchers, faucet filters and under-sink systems are all certified model by model. NSF's public database lets you search certified drinking water treatment units by product type, including pitchers, and by standard, such as NSF/ANSI 42 (aesthetic effects like chlorine taste), 53 (health-related contaminants), 58 (reverse osmosis) and 401 (emerging compounds). A certification covers only the contaminants listed for that exact model, so look it up before you rely on it.
Chloramine is worth a note: some utilities use it instead of chlorine, and it can be harder for basic carbon to handle than chlorine. See choosing a filter for chloramine.
DIY vs professional install
A pitcher needs no install, which is its biggest advantage. An under-sink system needs a cold water connection, a drain connection and a faucet hole; some owners do it themselves, many prefer a pro. Whole-home systems involve main-line plumbing and are usually professionally installed. Living Water handles installation after the free in-home test.
When to move beyond a pitcher
- You refill it several times a day.
- You want filtered water for cooking, coffee and ice.
- You notice the chlorine or chloramine smell in the shower, not just the glass.
- You see scale on glass doors and fixtures, which a pitcher does not address.
Compare options in whole-house vs under-sink.
Get a free in-home test
Jorge will test your water at home, explain what he finds, and tell you honestly whether a pitcher is enough or a system makes sense. Call, text or WhatsApp (305) 793-5974, or book your test.
This page compares product categories, not specific brands. Brand names are trademarks of their owners; Living Waters is not affiliated with any pitcher filter maker.
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist