Omnipure Carbon Block Filter Cartridges are NSF certified to reduce chlorine, taste and odours.
However, there are other carbon filters in the same range specialised in removing other contaminants found in drinking water, such as heavy metals and VOCs.
References
(1) NSF Certification in Omnipure Filters
(2) Filtration Media in Omnipure Filters
(3) Chlorine in Drinking Water
(4) Heavy Metals in Drinking Water
(5) Omnipure Replacement Filters
(6) Omnipure Model Number Information
(7) Taste and Odours in Drinking Water
(8) Basic Carbon Replacement Filters