Replacement cartridges at:

fluoride water filters, countertop and under-counter

Replacement Water Filter Cartridges and Miscellaneous Parts

kdf Filter KG-CF. KDF/GAC Filter--$41.95 low price, long lasting--up to 3 years  This is a custom made cartridge using 1 lb of KDF for heavy metals (lead, mercury, arsenic), aluminum, iron, HAA5s (haloacetic acids), some chloramines, MTBEs, pesticides, VOCs, chlorine and kills/inhibits bacteria. Next, the KDF treated water passes through coconut shell carbon using "adsorption" to remove herbicides, pesticides (both KDF and GAC remove pesticides), industrial chemicals,  trihalomethanes (TTHM's), hydrogen sulfide and more.  GAC is also known to remove radioactive iodine (131). The cartridge is filled to our specifications with the maximum media. 2 year replacement now recommended. We have two different cartridges, both from the same manufacturer.

USA made, KDF/GAC (Granular Activated Carbon) filter cartridge for Models CT, CTD-C, UC, UCD, UCT and NaK-UC. Will also fit housings designed for standard 9 3/4" cartridges.  Also removes lead that may be present in old pipes. Includes 1 lb of KDF media and the rest GAC (coconut shell Granulated Activated Carbon). Rated to treat 12,000 gallons. [NSF-53 Standard Test Results]. Includes chlorine test strips to verify when it's time to replace cartridge.


Filter N. NITRATE REMOVAL CARTRIDGE. Contains a special nitrate-selective resin. Nitrate reduction is 90% to 95% and breakthrough is not affected by sulfate levels. The capacity is 5000 ppm of nitrates as CaCO3. To determine capacity, first calculate the ppm of nitrates as CaCO3, then divide that number into 5000 to get the gallons. This cartridge can be regenerated using sodium chloride brine.


Filter NAK/Softener Cartridge--Save 50 percent! Just $19.95. SODIUM REMOVAL CARTRIDGE.  Contains a high-efficiency ion-exchange resin regenerated in the potassium form. It will remove virtually all sodium (and hardness) and exchange it for potassium. Also works as a water softener by exchanging postassium for calcium and magnesium. Removes all sodium at 7500 ppm gallons with a flow rate of 0.5 gpm or less. To determine the capacity, divide 7500 ppm by the amount of sodium in your water. For example, if your water has 20 ppm sodium, the cartridge capacity will be 375 gallons. Can be regenerated using potassium chloride brine (about once a month). Note: the softener resin can add a bitter taste to the water. May also be used to remove radioactivity from water including radium, uranium and beta particles.

refrigerator filter

Filter IL-E. KDF/GAC replacement filter for our Portable Countertop Filter, CT-P and our refrigerator filter IL.  Rated to treat 8,000 gallons; 3 year prorated warranty. Includes chlorine test strips to verify when it's time to replace the filter. This is Filter IL less the fittings and clips. 11" long, 2" diameter.

KDF Shower Filters

shower water filtershower filter


Shower Filter Replacements

replacement shower filter cartridge

Part SF-1000/2000RC. Replacement Cartridge for SF1000 backwashing shower filter: