Water Filter Comparison: Pitcher vs Under-Sink vs Whole-House
2026-03-02 · 6 min read · Guide
Pitcher Filters
Cost: $20-$50, replacement filters $5-$15/month. Best for: taste/odor improvement, chlorine reduction. Limitations: slow filtration, limited capacity, does not remove most well water contaminants (arsenic, nitrate, bacteria). Not recommended as primary treatment for contaminated well water.
Under-Sink (Point-of-Use) Systems
Cost: $150-$500, filter replacement $50-$150/year. Types: carbon block, reverse osmosis, UV. Best for: dedicated drinking/cooking water treatment. RO systems remove most contaminants effectively. Install under kitchen sink with separate faucet.
Whole-House (Point-of-Entry) Systems
Cost: $1,000-$5,000+, maintenance $200-$500/year. Types: sediment filter + carbon + softener + UV (multi-stage). Treats all water entering the home. Necessary for contaminants that pose risk through bathing (radon, VOCs) or that damage plumbing (hardness, iron).
Recommendation for Well Owners
Most well owners benefit from a combination: a whole-house sediment filter and softener, plus an under-sink RO system for drinking water. Add UV disinfection if bacteria is a concern. Size your system based on your specific water test results.
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