Product review (2 stars): Does Not Test NSF 53 Only NSF 42
I was under the impression that product was tested aginst NSF standard 42 and NSF standard 53.  The first one tests filter for aesthetic effects in the water such as chlorine taste/smell, not harmful to health.  Standard 53 tests for harmful contaminants, such as heavy metals, chemicals, and even bacteria.  The filter package states that the filter is tested aginst standard 42 but does not mention standard 53.  I can only assume  it was not tested, and this being the most important function of the filter it's a pretty glaring defect.  I
Normally solid carbon filters, as this one claims to be, are extremely effective at removing contaminants, so I cannot imagine why the manufacturer did not proceed with the testing of standard 53.
HS