For severe water problems choose Cuzn's CT-3K counter top drinking water filter where you can create any 3 cartridge combination designed to fit your specific needs. If you're not sure what you need call us at 1-800-345-7873 and a water specialist will help you make the right choice. Comes in spouted version, CT-3KS, or double diverter, CT-3KDD.

All the combos will have the standard KR-101N cartridge as the one in the last housing. The other combos would be using two cartridges which could be any of the following:
FR-1 & NR-1 - Fluoride and Nitrate
FR-1 & CR-1 - Fluoride and Chloramine
FR-1 & AR-1 - Fluoride and Arsenic

FR-1 & RN-1 - Fluoride and Radioactive
NR-1 & CR-1 - Nitrate and Chloramine
NR-1 & AR-1 - Nitrate and Arsenic

NR-1 & RN-1 - Nitrate and Radioactive
CR-1 & AR-1 - Chloramine and Arsenic

AR-1 & RN -1 - Arsenic and Radioactive

CR-1 & RN -1 - Chloramine and Radioactive