How much does under-sink filtration cost per year?

Initial system cost is $50-200. Replacement filters cost $20-60 per year. Far cheaper than bottled water, which costs $300-500 per year for a family.

Does an under-sink filter reduce water pressure?

Slightly. Most users do not notice the reduction. Multi-stage systems reduce pressure more than single-stage. Quality systems maintain at least 1 gallon per minute flow.

Best Under Sink Water Filters 2026