EWG’s water filter guide
Find the right filter for your water – and budget
Consulta la versión en español de cada guía
What’s most important to you in a water filter?
Whether you want the least expensive or most effective filter, a filter to soften hard water or one to remove specific contaminants, you can find options below.
A carbon filter can reduce the levels of many common contaminants, such as lead and disinfection byproducts. There are many options for carbon filters, from countertop pitcher filters to faucet-mounted filters, undersink filters and whole-house filters.
Reverse Osmosis Systems
A reverse osmosis system combined with a carbon filter is most effective at removing water contaminants.
Soften Hard Water
A whole-house water softener combined with an ion exchange filter softens your water and reduces the levels of some contaminants.
Step by Step Guide
Find the right filter for your water – and budget.