Choose a product specifically certified for lead reduction under an applicable standard such as NSF/ANSI 53 or 58. Do not rely on generic “carbon” or “RO” language.
Best low-waste option: certified under-sink carbon
A certified under-sink carbon filter can reduce lead without wastewater or electricity. This is a strong choice when lead is the primary concern and the exact model claim is verified.
Best broad-treatment category: RO
RO can reduce lead along with many other dissolved contaminants. It is attractive when the household is concerned about more than one contaminant.
Best renter options
Certified pitchers, faucet filters and countertop RO can all work in rentals. Compatibility, volume and replacement cost decide which is practical.
Test the tap
Old plumbing can make one building or faucet different from the utility report. A tap-level lead test is therefore valuable before and after treatment.