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The Aquasana AQ-4000 is part of the Water Filter
test program at Consumer Reports. In our lab tests, Water Filter
models like the AQ-4000 are rated on multiple criteria, such as those listed below.
Lead removal: how effectively the filter removed lead in our tests
Chloroform removal: how effectively the filter removed chloroform in our tests
Flow rate: Time to dispense one quart of filtered water
Countertop Water Filter
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